diff --git a/Make.inc b/Make.inc
index 03b60f17a1cb0..47c8a9adaa15b 100644
--- a/Make.inc
+++ b/Make.inc
@@ -1001,10 +1001,7 @@ else ifeq ($(OS), Darwin)
   RPATH_ESCAPED_ORIGIN := $(RPATH_ORIGIN)
   RPATH_LIB := -Wl,-rpath,'@loader_path/julia/' -Wl,-rpath,'@loader_path/'
 else
-  RPATH := -Wl,-rpath,'$$ORIGIN/$(build_libdir_rel)' -Wl,-rpath-link,$(build_shlibdir) -Wl,-z,origin
-ifeq ($(OS), FreeBSD)
-  RPATH += -Wl,-rpath,'$$ORIGIN/$(build_private_libdir_rel)'
-endif
+  RPATH := -Wl,-rpath,'$$ORIGIN/$(build_libdir_rel)' -Wl,-rpath,'$$ORIGIN/$(build_private_libdir_rel)' -Wl,-rpath-link,$(build_shlibdir) -Wl,-z,origin
   RPATH_ORIGIN := -Wl,-rpath,'$$ORIGIN' -Wl,-z,origin
   RPATH_ESCAPED_ORIGIN := -Wl,-rpath,'\$$\$$ORIGIN' -Wl,-z,origin -Wl,-rpath-link,$(build_shlibdir)
   RPATH_LIB := -Wl,-rpath,'$$ORIGIN/julia' -Wl,-rpath,'$$ORIGIN' -Wl,-z,origin
diff --git a/NEWS.md b/NEWS.md
index ecacf6720077a..1800a956a3b7b 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -81,6 +81,11 @@ Standard library changes
   form `kron(u, v')`, `u * v'`, and `u .* v'` where `u` and `v` are sparse vectors or column
   views ([#24980]).
 
+#### Sockets
+
+* `getipaddrs` returns IP addresses in the order provided by libuv ([#32260]).
+* `getipaddr` prefers to return the first `IPv4` interface address provided by libuv ([#32260]).
+
 #### Statistics
 * `quantile` now accepts in all cases collections whose `eltype` is not a subtype of `Number` ([#30938]).
 
diff --git a/base/compiler/abstractinterpretation.jl b/base/compiler/abstractinterpretation.jl
index 9c15c49f5888a..8e636cf3237e0 100644
--- a/base/compiler/abstractinterpretation.jl
+++ b/base/compiler/abstractinterpretation.jl
@@ -422,10 +422,13 @@ function precise_container_type(@nospecialize(typ), vtypes::VarTable, sv::Infere
     tti0 = widenconst(typ)
     tti = unwrap_unionall(tti0)
     if isa(tti, DataType) && tti.name === NamedTuple_typename
-        tti0 = tti.parameters[2]
-        while isa(tti0, TypeVar)
-            tti0 = tti0.ub
+        # A NamedTuple iteration is the the same as the iteration of its Tuple parameter:
+        # compute a new `tti == unwrap_unionall(tti0)` based on that Tuple type
+        tti = tti.parameters[2]
+        while isa(tti, TypeVar)
+            tti = tti.ub
         end
+        tti0 = rewrap_unionall(tti, tti0)
     end
     if isa(tti, Union)
         utis = uniontypes(tti)
diff --git a/base/download.jl b/base/download.jl
index 1f5487d943195..63ae232167624 100644
--- a/base/download.jl
+++ b/base/download.jl
@@ -28,7 +28,7 @@ function find_curl()
         "/usr/bin/curl"
     elseif Sys.iswindows() && Sys.isexecutable(joinpath(get(ENV, "SYSTEMROOT", "C:\\Windows"), "System32\\curl.exe"))
         joinpath(get(ENV, "SYSTEMROOT", "C:\\Windows"), "System32\\curl.exe")
-    elseif Sys.which("curl") !== nothing
+    elseif !Sys.iswindows() && Sys.which("curl") !== nothing
         "curl"
     else
         nothing
diff --git a/base/parse.jl b/base/parse.jl
index a652e1f7387ab..762ce70368482 100644
--- a/base/parse.jl
+++ b/base/parse.jl
@@ -123,7 +123,8 @@ function tryparse_internal(::Type{T}, s::AbstractString, startpos::Int, endpos::
     _Z = UInt32('Z')
     _z = UInt32('z')
     while n <= m
-        _c = UInt32(c)
+        # Fast path from `UInt32(::Char)`; non-ascii will be >= 0x80
+        _c = reinterpret(UInt32, c) >> 24
         d::T = _0 <= _c <= _9 ? _c-_0             :
                _A <= _c <= _Z ? _c-_A+ UInt32(10) :
                _a <= _c <= _z ? _c-_a+a           : base
@@ -142,7 +143,8 @@ function tryparse_internal(::Type{T}, s::AbstractString, startpos::Int, endpos::
     end
     (T <: Signed) && (n *= sgn)
     while !isspace(c)
-        _c = UInt32(c)
+        # Fast path from `UInt32(::Char)`; non-ascii will be >= 0x80
+        _c = reinterpret(UInt32, c) >> 24
         d::T = _0 <= _c <= _9 ? _c-_0             :
                _A <= _c <= _Z ? _c-_A+ UInt32(10) :
                _a <= _c <= _z ? _c-_a+a           : base
diff --git a/base/strings/util.jl b/base/strings/util.jl
index d6d65ebd7dd99..6921e1bb5ed1f 100644
--- a/base/strings/util.jl
+++ b/base/strings/util.jl
@@ -245,7 +245,7 @@ function lpad(
     n::Integer,
     p::Union{AbstractChar,AbstractString}=' ',
 ) :: String
-    m = n - length(s)
+    m = signed(n) - length(s)
     m ≤ 0 && return string(s)
     l = length(p)
     q, r = divrem(m, l)
@@ -272,7 +272,7 @@ function rpad(
     n::Integer,
     p::Union{AbstractChar,AbstractString}=' ',
 ) :: String
-    m = n - length(s)
+    m = signed(n) - length(s)
     m ≤ 0 && return string(s)
     l = length(p)
     q, r = divrem(m, l)
diff --git a/base/task.jl b/base/task.jl
index 1985fc03b9611..02d1a4dbccb81 100644
--- a/base/task.jl
+++ b/base/task.jl
@@ -409,7 +409,7 @@ end
 
 function enq_work(t::Task)
     (t.state == :runnable && t.queue === nothing) || error("schedule: Task not runnable")
-    if t.sticky
+    if t.sticky || Threads.nthreads() == 1
         tid = Threads.threadid(t)
         if tid == 0
             tid = Threads.threadid()
diff --git a/contrib/normalize_triplet.py b/contrib/normalize_triplet.py
index ce23ea065b893..7bc5554ffff3d 100755
--- a/contrib/normalize_triplet.py
+++ b/contrib/normalize_triplet.py
@@ -117,7 +117,7 @@ def p(x):
             "7": "gcc7",
             "8": "gcc8",
             "9": "gcc8",
-        }[list(filter(lambda x: re.match("\d+\.\d+\.\d+", x), sys.argv[2].split()))[-1][0]]
+        }[list(filter(lambda x: re.match("\d+\.\d+(\.\d+)?", x), sys.argv[2].split()))[-1][0]]
 
 if cxx_abi == "blank_cxx_abi":
     if len(sys.argv) == 4:
diff --git a/deps/Versions.make b/deps/Versions.make
index f120400fa092b..ff103cbbe1e7e 100644
--- a/deps/Versions.make
+++ b/deps/Versions.make
@@ -4,7 +4,7 @@ PCRE_VER = 10.31
 PCRE_BB_REL = 0
 DSFMT_VER = 2.2.3
 OPENBLAS_VER = 0.3.5
-OPENBLAS_BB_REL = 1
+OPENBLAS_BB_REL = 2
 LAPACK_VER = 3.5.0
 SUITESPARSE_VER = 5.4.0
 SUITESPARSE_BB_REL = 2
diff --git a/deps/checksums/OpenBLAS.v0.3.5-1.aarch64-linux-gnu-gcc4.tar.gz/md5 b/deps/checksums/OpenBLAS.v0.3.5-1.aarch64-linux-gnu-gcc4.tar.gz/md5
deleted file mode 100644
index 3dcb93d281005..0000000000000
--- a/deps/checksums/OpenBLAS.v0.3.5-1.aarch64-linux-gnu-gcc4.tar.gz/md5
+++ /dev/null
@@ -1 +0,0 @@
-e7bdee6a6978f2cbc900fa32ef492854
diff --git a/deps/checksums/OpenBLAS.v0.3.5-1.aarch64-linux-gnu-gcc4.tar.gz/sha512 b/deps/checksums/OpenBLAS.v0.3.5-1.aarch64-linux-gnu-gcc4.tar.gz/sha512
deleted file mode 100644
index 4c2c48e5de56d..0000000000000
--- a/deps/checksums/OpenBLAS.v0.3.5-1.aarch64-linux-gnu-gcc4.tar.gz/sha512
+++ /dev/null
@@ -1 +0,0 @@
-286f84e14600617e46eb3d3bfd14dee24845385f9c3a764ce4a925d1a2d31defad9adcbba83956952c940c1e90dbf06e9d995d83176858392290e9f3bf93dc01
diff --git a/deps/checksums/OpenBLAS.v0.3.5-1.aarch64-linux-gnu-gcc7.tar.gz/md5 b/deps/checksums/OpenBLAS.v0.3.5-1.aarch64-linux-gnu-gcc7.tar.gz/md5
deleted file mode 100644
index 1376bb06eae0e..0000000000000
--- a/deps/checksums/OpenBLAS.v0.3.5-1.aarch64-linux-gnu-gcc7.tar.gz/md5
+++ /dev/null
@@ -1 +0,0 @@
-263e0d085b723b7ec4d01838841ff3ee
diff --git a/deps/checksums/OpenBLAS.v0.3.5-1.aarch64-linux-gnu-gcc7.tar.gz/sha512 b/deps/checksums/OpenBLAS.v0.3.5-1.aarch64-linux-gnu-gcc7.tar.gz/sha512
deleted file mode 100644
index 0ef72f2aeb5b1..0000000000000
--- a/deps/checksums/OpenBLAS.v0.3.5-1.aarch64-linux-gnu-gcc7.tar.gz/sha512
+++ /dev/null
@@ -1 +0,0 @@
-977bc0754829ecceb9b4d8c4fa00bf972b1d42d5975d005472400f7429feddebfb1fe5930fabf9378ad552d3d771d31b984588816062da1a48df373b7b1228bc
diff --git a/deps/checksums/OpenBLAS.v0.3.5-1.aarch64-linux-gnu-gcc8.tar.gz/md5 b/deps/checksums/OpenBLAS.v0.3.5-1.aarch64-linux-gnu-gcc8.tar.gz/md5
deleted file mode 100644
index 1da34a4a8ef79..0000000000000
--- a/deps/checksums/OpenBLAS.v0.3.5-1.aarch64-linux-gnu-gcc8.tar.gz/md5
+++ /dev/null
@@ -1 +0,0 @@
-1a5602d74db720b49ae6cc81f0dace96
diff --git a/deps/checksums/OpenBLAS.v0.3.5-1.aarch64-linux-gnu-gcc8.tar.gz/sha512 b/deps/checksums/OpenBLAS.v0.3.5-1.aarch64-linux-gnu-gcc8.tar.gz/sha512
deleted file mode 100644
index 3d7d2e271a207..0000000000000
--- a/deps/checksums/OpenBLAS.v0.3.5-1.aarch64-linux-gnu-gcc8.tar.gz/sha512
+++ /dev/null
@@ -1 +0,0 @@
-a42d3ee2904152538890266cabc30f4487a2b1e4c98a4dfa831d7bd42ffc0904a4cc587d9cee06cc07a46be727f7943914359f10f686ecd0e26f926ac04523dc
diff --git a/deps/checksums/OpenBLAS.v0.3.5-1.aarch64-linux-musl-gcc4.tar.gz/md5 b/deps/checksums/OpenBLAS.v0.3.5-1.aarch64-linux-musl-gcc4.tar.gz/md5
deleted file mode 100644
index d5429a91195a5..0000000000000
--- a/deps/checksums/OpenBLAS.v0.3.5-1.aarch64-linux-musl-gcc4.tar.gz/md5
+++ /dev/null
@@ -1 +0,0 @@
-b68c8f87ba525da59d3ce41dadefc1ce
diff --git a/deps/checksums/OpenBLAS.v0.3.5-1.aarch64-linux-musl-gcc4.tar.gz/sha512 b/deps/checksums/OpenBLAS.v0.3.5-1.aarch64-linux-musl-gcc4.tar.gz/sha512
deleted file mode 100644
index efff55d0029c1..0000000000000
--- a/deps/checksums/OpenBLAS.v0.3.5-1.aarch64-linux-musl-gcc4.tar.gz/sha512
+++ /dev/null
@@ -1 +0,0 @@
-3eeb0d6bab2a2084bd6cef5a7cdcbb7ba9fd810add7f41ae25d227b3a374a200c0273278171525f3e67f72fce2485c50665e8b506b86604cd1966ae576e196c2
diff --git a/deps/checksums/OpenBLAS.v0.3.5-1.aarch64-linux-musl-gcc7.tar.gz/md5 b/deps/checksums/OpenBLAS.v0.3.5-1.aarch64-linux-musl-gcc7.tar.gz/md5
deleted file mode 100644
index 6d096f6cf6769..0000000000000
--- a/deps/checksums/OpenBLAS.v0.3.5-1.aarch64-linux-musl-gcc7.tar.gz/md5
+++ /dev/null
@@ -1 +0,0 @@
-ea0c8c2a9db5b9be0ab1e092b76afca2
diff --git a/deps/checksums/OpenBLAS.v0.3.5-1.aarch64-linux-musl-gcc7.tar.gz/sha512 b/deps/checksums/OpenBLAS.v0.3.5-1.aarch64-linux-musl-gcc7.tar.gz/sha512
deleted file mode 100644
index a0a4321f57ebb..0000000000000
--- a/deps/checksums/OpenBLAS.v0.3.5-1.aarch64-linux-musl-gcc7.tar.gz/sha512
+++ /dev/null
@@ -1 +0,0 @@
-c142559c03571421eb72909bd305894c87c15a781d2b40d15d9996b69c7f027331b498fc2374a3477a7c8a8405afda5e8da4f0d2b9c205b730bf83065f5f6abc
diff --git a/deps/checksums/OpenBLAS.v0.3.5-1.aarch64-linux-musl-gcc8.tar.gz/md5 b/deps/checksums/OpenBLAS.v0.3.5-1.aarch64-linux-musl-gcc8.tar.gz/md5
deleted file mode 100644
index 9d35c51ffcfc1..0000000000000
--- a/deps/checksums/OpenBLAS.v0.3.5-1.aarch64-linux-musl-gcc8.tar.gz/md5
+++ /dev/null
@@ -1 +0,0 @@
-b8710afad990120835ba26b41a9960c9
diff --git a/deps/checksums/OpenBLAS.v0.3.5-1.aarch64-linux-musl-gcc8.tar.gz/sha512 b/deps/checksums/OpenBLAS.v0.3.5-1.aarch64-linux-musl-gcc8.tar.gz/sha512
deleted file mode 100644
index 5e0c168ab41a1..0000000000000
--- a/deps/checksums/OpenBLAS.v0.3.5-1.aarch64-linux-musl-gcc8.tar.gz/sha512
+++ /dev/null
@@ -1 +0,0 @@
-7b522018b4c02ed21c623d612199f1230c00cbe583ef8f3f6a64b685f38f77c2559d5043684b07d98eed0ef53649da8efcd0d93ec355f332d2e36b494b678659
diff --git a/deps/checksums/OpenBLAS.v0.3.5-1.arm-linux-gnueabihf-gcc4.tar.gz/md5 b/deps/checksums/OpenBLAS.v0.3.5-1.arm-linux-gnueabihf-gcc4.tar.gz/md5
deleted file mode 100644
index 6703857508076..0000000000000
--- a/deps/checksums/OpenBLAS.v0.3.5-1.arm-linux-gnueabihf-gcc4.tar.gz/md5
+++ /dev/null
@@ -1 +0,0 @@
-8c5723161d0d8cd8fdb19ba7d78a3e2e
diff --git a/deps/checksums/OpenBLAS.v0.3.5-1.arm-linux-gnueabihf-gcc4.tar.gz/sha512 b/deps/checksums/OpenBLAS.v0.3.5-1.arm-linux-gnueabihf-gcc4.tar.gz/sha512
deleted file mode 100644
index fefca48417060..0000000000000
--- a/deps/checksums/OpenBLAS.v0.3.5-1.arm-linux-gnueabihf-gcc4.tar.gz/sha512
+++ /dev/null
@@ -1 +0,0 @@
-fdec45cd4d25279496e08acec67bb21a19baced49ad35a9141651ea3a97f07159cd69651ca3c734ffa94cbf341b22ff0a13d1d615365fb7caecfb847ef5717e9
diff --git a/deps/checksums/OpenBLAS.v0.3.5-1.arm-linux-gnueabihf-gcc7.tar.gz/md5 b/deps/checksums/OpenBLAS.v0.3.5-1.arm-linux-gnueabihf-gcc7.tar.gz/md5
deleted file mode 100644
index b4865f7a786cb..0000000000000
--- a/deps/checksums/OpenBLAS.v0.3.5-1.arm-linux-gnueabihf-gcc7.tar.gz/md5
+++ /dev/null
@@ -1 +0,0 @@
-dbf33f89fe63b67f0b4e1eb6c479d7f9
diff --git a/deps/checksums/OpenBLAS.v0.3.5-1.arm-linux-gnueabihf-gcc7.tar.gz/sha512 b/deps/checksums/OpenBLAS.v0.3.5-1.arm-linux-gnueabihf-gcc7.tar.gz/sha512
deleted file mode 100644
index 06dc50f9059b4..0000000000000
--- a/deps/checksums/OpenBLAS.v0.3.5-1.arm-linux-gnueabihf-gcc7.tar.gz/sha512
+++ /dev/null
@@ -1 +0,0 @@
-13a5496d516ac6925b76918ffcc564ddaf4da1d7074e803a127d69e233d8c536650618b6775683eeafe0476c0fbb3ff85f5a76caedaa36c389ff4584901b7e89
diff --git a/deps/checksums/OpenBLAS.v0.3.5-1.arm-linux-gnueabihf-gcc8.tar.gz/md5 b/deps/checksums/OpenBLAS.v0.3.5-1.arm-linux-gnueabihf-gcc8.tar.gz/md5
deleted file mode 100644
index 8e70545e496dd..0000000000000
--- a/deps/checksums/OpenBLAS.v0.3.5-1.arm-linux-gnueabihf-gcc8.tar.gz/md5
+++ /dev/null
@@ -1 +0,0 @@
-217840cf4bcc2874c1b19aceab3ebe64
diff --git a/deps/checksums/OpenBLAS.v0.3.5-1.arm-linux-gnueabihf-gcc8.tar.gz/sha512 b/deps/checksums/OpenBLAS.v0.3.5-1.arm-linux-gnueabihf-gcc8.tar.gz/sha512
deleted file mode 100644
index a1fd61b15559d..0000000000000
--- a/deps/checksums/OpenBLAS.v0.3.5-1.arm-linux-gnueabihf-gcc8.tar.gz/sha512
+++ /dev/null
@@ -1 +0,0 @@
-9fd866d18ce6632b1e6a65122535289e5dcd260cfb430900acaa7413ee51c8344ca8dc7958a0f5e68d14f5526de06b1c23d84276ee2eae54ad08c052ac18ddee
diff --git a/deps/checksums/OpenBLAS.v0.3.5-1.arm-linux-musleabihf-gcc4.tar.gz/md5 b/deps/checksums/OpenBLAS.v0.3.5-1.arm-linux-musleabihf-gcc4.tar.gz/md5
deleted file mode 100644
index 8a8a117fb8c36..0000000000000
--- a/deps/checksums/OpenBLAS.v0.3.5-1.arm-linux-musleabihf-gcc4.tar.gz/md5
+++ /dev/null
@@ -1 +0,0 @@
-b6319b5b891eddcdff8d32f094565fe1
diff --git a/deps/checksums/OpenBLAS.v0.3.5-1.arm-linux-musleabihf-gcc4.tar.gz/sha512 b/deps/checksums/OpenBLAS.v0.3.5-1.arm-linux-musleabihf-gcc4.tar.gz/sha512
deleted file mode 100644
index d90dc5e610926..0000000000000
--- a/deps/checksums/OpenBLAS.v0.3.5-1.arm-linux-musleabihf-gcc4.tar.gz/sha512
+++ /dev/null
@@ -1 +0,0 @@
-6fd68da70076596ab16a493cd574afdf1740f0734659d0ff8cf1a3c293191c524b99f80453a2a368a362b987d3681cbcdfec8db3edfc668666652ef25623c64d
diff --git a/deps/checksums/OpenBLAS.v0.3.5-1.arm-linux-musleabihf-gcc7.tar.gz/md5 b/deps/checksums/OpenBLAS.v0.3.5-1.arm-linux-musleabihf-gcc7.tar.gz/md5
deleted file mode 100644
index 3c34ba323c9ee..0000000000000
--- a/deps/checksums/OpenBLAS.v0.3.5-1.arm-linux-musleabihf-gcc7.tar.gz/md5
+++ /dev/null
@@ -1 +0,0 @@
-329ae468ca4c70d3e1a9b420caa8d4e9
diff --git a/deps/checksums/OpenBLAS.v0.3.5-1.arm-linux-musleabihf-gcc7.tar.gz/sha512 b/deps/checksums/OpenBLAS.v0.3.5-1.arm-linux-musleabihf-gcc7.tar.gz/sha512
deleted file mode 100644
index 3a7e19009e3c9..0000000000000
--- a/deps/checksums/OpenBLAS.v0.3.5-1.arm-linux-musleabihf-gcc7.tar.gz/sha512
+++ /dev/null
@@ -1 +0,0 @@
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diff --git a/deps/checksums/OpenBLAS.v0.3.5-1.arm-linux-musleabihf-gcc8.tar.gz/md5 b/deps/checksums/OpenBLAS.v0.3.5-1.arm-linux-musleabihf-gcc8.tar.gz/md5
deleted file mode 100644
index ba13c7d83ca0c..0000000000000
--- a/deps/checksums/OpenBLAS.v0.3.5-1.arm-linux-musleabihf-gcc8.tar.gz/md5
+++ /dev/null
@@ -1 +0,0 @@
-9d42d4a77d2de9fbeb9347b742178417
diff --git a/deps/checksums/OpenBLAS.v0.3.5-1.arm-linux-musleabihf-gcc8.tar.gz/sha512 b/deps/checksums/OpenBLAS.v0.3.5-1.arm-linux-musleabihf-gcc8.tar.gz/sha512
deleted file mode 100644
index 58472df703951..0000000000000
--- a/deps/checksums/OpenBLAS.v0.3.5-1.arm-linux-musleabihf-gcc8.tar.gz/sha512
+++ /dev/null
@@ -1 +0,0 @@
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diff --git a/deps/checksums/OpenBLAS.v0.3.5-1.i686-linux-gnu-gcc4.tar.gz/md5 b/deps/checksums/OpenBLAS.v0.3.5-1.i686-linux-gnu-gcc4.tar.gz/md5
deleted file mode 100644
index 5f91d1818513d..0000000000000
--- a/deps/checksums/OpenBLAS.v0.3.5-1.i686-linux-gnu-gcc4.tar.gz/md5
+++ /dev/null
@@ -1 +0,0 @@
-a3e70794241cace350cf9a2e62924970
diff --git a/deps/checksums/OpenBLAS.v0.3.5-1.i686-linux-gnu-gcc4.tar.gz/sha512 b/deps/checksums/OpenBLAS.v0.3.5-1.i686-linux-gnu-gcc4.tar.gz/sha512
deleted file mode 100644
index a132a6c8f8a12..0000000000000
--- a/deps/checksums/OpenBLAS.v0.3.5-1.i686-linux-gnu-gcc4.tar.gz/sha512
+++ /dev/null
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+++ b/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-linux-musl-gcc4.tar.gz/md5
@@ -0,0 +1 @@
+4c3dffaacf774f5838cd2d0f178a4e67
diff --git a/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-linux-musl-gcc4.tar.gz/sha512 b/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-linux-musl-gcc4.tar.gz/sha512
new file mode 100644
index 0000000000000..65b9bd3cb1598
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-linux-musl-gcc4.tar.gz/sha512
@@ -0,0 +1 @@
+9552f805840c48ed24d65ac858ac13db158cb3579753400c778a3aabac39b20d47a59ab36c86293e5c8b15837e8567e8635792f5ee426be83d26cc6de7bfdcb0
diff --git a/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-linux-musl-gcc7.tar.gz/md5 b/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-linux-musl-gcc7.tar.gz/md5
new file mode 100644
index 0000000000000..e3e217878cb5a
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-linux-musl-gcc7.tar.gz/md5
@@ -0,0 +1 @@
+d0724e5fd3ffdb759e293724f4b9fa73
diff --git a/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-linux-musl-gcc7.tar.gz/sha512 b/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-linux-musl-gcc7.tar.gz/sha512
new file mode 100644
index 0000000000000..b0ea95ed0220d
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-linux-musl-gcc7.tar.gz/sha512
@@ -0,0 +1 @@
+00b6d2eb995e0c1d973e6d30bd70b92d7d2c5f6d14f9cb1788b16d772e91faef8b095e3ae13729c168088fe005caf2e303d51b9414c243b4e12d8beee7547d3d
diff --git a/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-linux-musl-gcc8.tar.gz/md5 b/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-linux-musl-gcc8.tar.gz/md5
new file mode 100644
index 0000000000000..f7b5eba54c30d
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-linux-musl-gcc8.tar.gz/md5
@@ -0,0 +1 @@
+36258813bf0e72e1566bd73816bd7b6a
diff --git a/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-linux-musl-gcc8.tar.gz/sha512 b/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-linux-musl-gcc8.tar.gz/sha512
new file mode 100644
index 0000000000000..f7c773c4f3834
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-linux-musl-gcc8.tar.gz/sha512
@@ -0,0 +1 @@
+289903f344b251e122dd76bb0c9e097323e2da1f3995391dc9882098346355767c8d4933e6d1cc98074f3d85bb326aac5785b716dd6198d122e48f2c7fd072d4
diff --git a/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-unknown-freebsd11.1-gcc4.tar.gz/md5 b/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-unknown-freebsd11.1-gcc4.tar.gz/md5
new file mode 100644
index 0000000000000..3f7656c4b0f73
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-unknown-freebsd11.1-gcc4.tar.gz/md5
@@ -0,0 +1 @@
+457e4f86c5f482d777f41a24eb9642e1
diff --git a/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-unknown-freebsd11.1-gcc4.tar.gz/sha512 b/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-unknown-freebsd11.1-gcc4.tar.gz/sha512
new file mode 100644
index 0000000000000..7b67ada7f99b8
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-unknown-freebsd11.1-gcc4.tar.gz/sha512
@@ -0,0 +1 @@
+acd3f8b3d42e1fa4c46d82bc9c60042d91985d41b440fd7259b4370b93b19287792d8b14fa7d5a5510945b5201f225aadbbc96ff2edee0ab2c1a254624647247
diff --git a/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-unknown-freebsd11.1-gcc7.tar.gz/md5 b/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-unknown-freebsd11.1-gcc7.tar.gz/md5
new file mode 100644
index 0000000000000..9132655c248fd
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-unknown-freebsd11.1-gcc7.tar.gz/md5
@@ -0,0 +1 @@
+e57e4cb36402d9acb3d1a89a88e37826
diff --git a/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-unknown-freebsd11.1-gcc7.tar.gz/sha512 b/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-unknown-freebsd11.1-gcc7.tar.gz/sha512
new file mode 100644
index 0000000000000..ba5d1fb77c43e
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-unknown-freebsd11.1-gcc7.tar.gz/sha512
@@ -0,0 +1 @@
+b372b1d6fbaacb2e4c9baf585e1c6fa85a72ff37e9dc644a27308586edffa5e1c5c7e0be4245fb965e7cd0c6686f284d0112be60d5456e0892b097737756f4cf
diff --git a/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-unknown-freebsd11.1-gcc8.tar.gz/md5 b/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-unknown-freebsd11.1-gcc8.tar.gz/md5
new file mode 100644
index 0000000000000..a9ec847feb1a1
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-unknown-freebsd11.1-gcc8.tar.gz/md5
@@ -0,0 +1 @@
+61b60d24090c00e38cf8b6af83fd884f
diff --git a/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-unknown-freebsd11.1-gcc8.tar.gz/sha512 b/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-unknown-freebsd11.1-gcc8.tar.gz/sha512
new file mode 100644
index 0000000000000..47d269f26f87a
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-unknown-freebsd11.1-gcc8.tar.gz/sha512
@@ -0,0 +1 @@
+7f6cf4818134353462b08d23ed1adf4360653e58eb848b56bf49aee3c3f591ec91999048f4c1540001a35d15bc5e7795eb09ad8cb549663d56f7613c987b4b7c
diff --git a/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-w64-mingw32-gcc4.tar.gz/md5 b/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-w64-mingw32-gcc4.tar.gz/md5
new file mode 100644
index 0000000000000..cb8220313e440
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-w64-mingw32-gcc4.tar.gz/md5
@@ -0,0 +1 @@
+f5c0d5d809ddcf721ae1dc68eaf2c0c4
diff --git a/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-w64-mingw32-gcc4.tar.gz/sha512 b/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-w64-mingw32-gcc4.tar.gz/sha512
new file mode 100644
index 0000000000000..7e8c7609b2b04
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-w64-mingw32-gcc4.tar.gz/sha512
@@ -0,0 +1 @@
+395bdc4a316cf55206966c858bf7320d0f66cdf2f7d6393cc8b3dfd74fc4983a59dc522ac8c18534c6ecde5bf877af57dbc088c83fa6dd8270326f587ceecd6a
diff --git a/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-w64-mingw32-gcc7.tar.gz/md5 b/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-w64-mingw32-gcc7.tar.gz/md5
new file mode 100644
index 0000000000000..a6c82f8f63eb1
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-w64-mingw32-gcc7.tar.gz/md5
@@ -0,0 +1 @@
+f40e5bc882602ea1298089a92350bf5a
diff --git a/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-w64-mingw32-gcc7.tar.gz/sha512 b/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-w64-mingw32-gcc7.tar.gz/sha512
new file mode 100644
index 0000000000000..72ce16a123776
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-w64-mingw32-gcc7.tar.gz/sha512
@@ -0,0 +1 @@
+c4bc4b6922a57a9806ad007bd3e0655206717acf722e4e794b709f8b06efd6106d4b4e943276061a7632e7191e307317e3f3a205ff46e8ef3b9c0ea8634fe4f3
diff --git a/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-w64-mingw32-gcc8.tar.gz/md5 b/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-w64-mingw32-gcc8.tar.gz/md5
new file mode 100644
index 0000000000000..09801e687c899
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-w64-mingw32-gcc8.tar.gz/md5
@@ -0,0 +1 @@
+617c4587e25dc495446d389fa323c45f
diff --git a/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-w64-mingw32-gcc8.tar.gz/sha512 b/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-w64-mingw32-gcc8.tar.gz/sha512
new file mode 100644
index 0000000000000..38bc2a3bf33a6
--- /dev/null
+++ b/deps/checksums/OpenBLAS.v0.3.5-2.x86_64-w64-mingw32-gcc8.tar.gz/sha512
@@ -0,0 +1 @@
+63938a2e8ee30807cbeca92589d79d3c438f2aed3eb818735c3ab28e6a6d9835fb7cf250ea7c05fdc8949ba32769f394e6981be46c71b19a389a9b00501962ee
diff --git a/deps/checksums/Pkg-394e7c5d55d3722f5b2ab660ca0a694ea0041974.tar.gz/md5 b/deps/checksums/Pkg-394e7c5d55d3722f5b2ab660ca0a694ea0041974.tar.gz/md5
new file mode 100644
index 0000000000000..232f1eff47021
--- /dev/null
+++ b/deps/checksums/Pkg-394e7c5d55d3722f5b2ab660ca0a694ea0041974.tar.gz/md5
@@ -0,0 +1 @@
+4fc38de76502dba6b87a0da938dfd8f7
diff --git a/deps/checksums/Pkg-394e7c5d55d3722f5b2ab660ca0a694ea0041974.tar.gz/sha512 b/deps/checksums/Pkg-394e7c5d55d3722f5b2ab660ca0a694ea0041974.tar.gz/sha512
new file mode 100644
index 0000000000000..dd1fda7d20e33
--- /dev/null
+++ b/deps/checksums/Pkg-394e7c5d55d3722f5b2ab660ca0a694ea0041974.tar.gz/sha512
@@ -0,0 +1 @@
+6b5324ee3efad2bf1af6ed4503509c6297e710040ccd7d5c67263625f24eab9a88f28ad56cb77ca04ccc976c051f2fbf2bb2019df442ab4823e5a7aff977b825
diff --git a/deps/checksums/Pkg-b7d26be39a4e5467f73530592b27fe28e40f357b.tar.gz/md5 b/deps/checksums/Pkg-b7d26be39a4e5467f73530592b27fe28e40f357b.tar.gz/md5
deleted file mode 100644
index e1b902fa28ba3..0000000000000
--- a/deps/checksums/Pkg-b7d26be39a4e5467f73530592b27fe28e40f357b.tar.gz/md5
+++ /dev/null
@@ -1 +0,0 @@
-dd32624c45e8b3077bd12751ac541c4d
diff --git a/deps/checksums/Pkg-b7d26be39a4e5467f73530592b27fe28e40f357b.tar.gz/sha512 b/deps/checksums/Pkg-b7d26be39a4e5467f73530592b27fe28e40f357b.tar.gz/sha512
deleted file mode 100644
index 6fa0233ed6ac4..0000000000000
--- a/deps/checksums/Pkg-b7d26be39a4e5467f73530592b27fe28e40f357b.tar.gz/sha512
+++ /dev/null
@@ -1 +0,0 @@
-e30b43d06bf201fd4131881c7806769f4c9963c65f0e03eb5bbdb147d2373c69e5f8e1a567883acb12fb6c91fcbeb0acbc06cccb2232f5ce924f4c62a3039917
diff --git a/deps/tools/bb-install.mk b/deps/tools/bb-install.mk
index 198cfe1fc84cd..4db7c5d029691 100644
--- a/deps/tools/bb-install.mk
+++ b/deps/tools/bb-install.mk
@@ -1,6 +1,6 @@
 # Auto-detect triplet once, create different versions that we use as defaults below for each BB install target
 # This is much more efficient than launching `gcc` and `python` once for each BB install target.
-BB_TRIPLET_GCCABI_CXXABI := $(shell python $(call cygpath_w,$(JULIAHOME)/contrib/normalize_triplet.py) $(or $(XC_HOST),$(XC_HOST),$(BUILD_MACHINE)) "$(shell $(FC) --version | head -1)" "$(shell echo '\#include <string>' | $(CXX) $(CXXFLAGS) -x c++ -dM -E - | grep _GLIBCXX_USE_CXX11_ABI | awk '{ print $$3 }' )")
+BB_TRIPLET_GCCABI_CXXABI := $(shell python $(JULIAHOME)/contrib/normalize_triplet.py $(or $(XC_HOST),$(XC_HOST),$(BUILD_MACHINE)) "$(shell $(FC) --version | head -1)" "$(shell echo '\#include <string>' | $(CXX) $(CXXFLAGS) -x c++ -dM -E - | grep _GLIBCXX_USE_CXX11_ABI | awk '{ print $$3 }' )")
 BB_TRIPLET_GCCABI := $(subst $(SPACE),-,$(filter-out cxx%,$(subst -,$(SPACE),$(BB_TRIPLET_GCCABI_CXXABI))))
 BB_TRIPLET_CXXABI := $(subst $(SPACE),-,$(filter-out gcc%,$(subst -,$(SPACE),$(BB_TRIPLET_GCCABI_CXXABI))))
 BB_TRIPLET := $(subst $(SPACE),-,$(filter-out cxx%,$(filter-out gcc%,$(subst -,$(SPACE),$(BB_TRIPLET_GCCABI_CXXABI)))))
diff --git a/src/array.c b/src/array.c
index 2744eafeab958..e5885f2308220 100644
--- a/src/array.c
+++ b/src/array.c
@@ -470,6 +470,8 @@ JL_DLLEXPORT jl_value_t *jl_array_to_string(jl_array_t *a)
 JL_DLLEXPORT jl_value_t *jl_pchar_to_string(const char *str, size_t len)
 {
     size_t sz = sizeof(size_t) + len + 1; // add space for trailing \nul protector and size
+    if (sz < len) // overflow
+        jl_throw(jl_memory_exception);
     if (len == 0)
         return jl_an_empty_string;
     jl_value_t *s = jl_gc_alloc_(jl_get_ptls_states(), sz, jl_string_type); // force inlining
@@ -482,6 +484,8 @@ JL_DLLEXPORT jl_value_t *jl_pchar_to_string(const char *str, size_t len)
 JL_DLLEXPORT jl_value_t *jl_alloc_string(size_t len)
 {
     size_t sz = sizeof(size_t) + len + 1; // add space for trailing \nul protector and size
+    if (sz < len) // overflow
+        jl_throw(jl_memory_exception);
     if (len == 0)
         return jl_an_empty_string;
     jl_value_t *s = jl_gc_alloc_(jl_get_ptls_states(), sz, jl_string_type); // force inlining
diff --git a/src/ccall.cpp b/src/ccall.cpp
index 9cf25cf8a33ff..baded9e5b8c7e 100644
--- a/src/ccall.cpp
+++ b/src/ccall.cpp
@@ -1669,10 +1669,10 @@ static jl_cgval_t emit_ccall(jl_codectx_t &ctx, jl_value_t **args, size_t nargs)
             }
             else if (!jl_has_free_typevars(ety)) {
                 Value *idx = emit_unbox(ctx, T_size, idxv, (jl_value_t*)jl_ulong_type);
-                Value *arrayptr = emit_bitcast(ctx, emit_arrayptr(ctx, aryv, aryex), T_ppjlvalue);
-                Value *slot_addr = ctx.builder.CreateGEP(arrayptr, idx);
-                Value *load = tbaa_decorate(tbaa_arraybuf, ctx.builder.CreateLoad(slot_addr));
-                Value *res = ctx.builder.CreateZExt(ctx.builder.CreateICmpNE(load, V_null), T_int32);
+                Value *arrayptr = emit_bitcast(ctx, emit_arrayptr(ctx, aryv, aryex), T_pprjlvalue);
+                Value *slot_addr = ctx.builder.CreateInBoundsGEP(T_prjlvalue, arrayptr, idx);
+                Value *load = tbaa_decorate(tbaa_ptrarraybuf, ctx.builder.CreateLoad(T_prjlvalue, slot_addr));
+                Value *res = ctx.builder.CreateZExt(ctx.builder.CreateICmpNE(load, Constant::getNullValue(T_prjlvalue)), T_int32);
                 JL_GC_POP();
                 return mark_or_box_ccall_result(ctx, res, retboxed, rt, unionall, static_rt);
             }
diff --git a/src/cgutils.cpp b/src/cgutils.cpp
index 13faef984574e..db0821fd9e8ac 100644
--- a/src/cgutils.cpp
+++ b/src/cgutils.cpp
@@ -785,13 +785,18 @@ static unsigned get_box_tindex(jl_datatype_t *jt, jl_value_t *ut)
 
 static Value *emit_nthptr_addr(jl_codectx_t &ctx, Value *v, ssize_t n, bool gctracked = true)
 {
-    return ctx.builder.CreateInBoundsGEP(emit_bitcast(ctx, maybe_decay_tracked(v), T_pprjlvalue),
-                             ConstantInt::get(T_size, n));
+    return ctx.builder.CreateInBoundsGEP(
+            T_prjlvalue,
+            emit_bitcast(ctx, maybe_decay_tracked(v), T_pprjlvalue),
+            ConstantInt::get(T_size, n));
 }
 
 static Value *emit_nthptr_addr(jl_codectx_t &ctx, Value *v, Value *idx)
 {
-    return ctx.builder.CreateInBoundsGEP(emit_bitcast(ctx, maybe_decay_tracked(v), T_pprjlvalue), idx);
+    return ctx.builder.CreateInBoundsGEP(
+            T_prjlvalue,
+            emit_bitcast(ctx, maybe_decay_tracked(v), T_pprjlvalue),
+            idx);
 }
 
 static Value *emit_nthptr(jl_codectx_t &ctx, Value *v, ssize_t n, MDNode *tbaa)
@@ -1482,8 +1487,10 @@ static bool emit_getfield_unknownidx(jl_codectx_t &ctx,
                 minimum_align = std::min(minimum_align,
                     (size_t)julia_alignment(ft));
             }
-            Value *fldptr = ctx.builder.CreateInBoundsGEP(maybe_decay_tracked(
-                emit_bitcast(ctx, data_pointer(ctx, strct), T_pprjlvalue)), idx);
+            Value *fldptr = ctx.builder.CreateInBoundsGEP(
+                    T_prjlvalue,
+                    maybe_decay_tracked(emit_bitcast(ctx, data_pointer(ctx, strct), T_pprjlvalue)),
+                    idx);
             Value *fld = tbaa_decorate(strct.tbaa,
                 maybe_mark_load_dereferenceable(
                     ctx.builder.CreateLoad(T_prjlvalue, fldptr),
@@ -1565,8 +1572,9 @@ static jl_cgval_t emit_getfield_knownidx(jl_codectx_t &ctx, const jl_cgval_t &st
             // can pessimize mem2reg
             if (byte_offset > 0) {
                 addr = ctx.builder.CreateInBoundsGEP(
-                    emit_bitcast(ctx, staddr, T_pint8),
-                    ConstantInt::get(T_size, byte_offset));
+                        T_int8,
+                        emit_bitcast(ctx, staddr, T_pint8),
+                        ConstantInt::get(T_size, byte_offset));
             }
             else {
                 addr = staddr;
@@ -1921,8 +1929,8 @@ static Value *emit_array_nd_index(
         ctx.builder.SetInsertPoint(failBB);
         // CreateAlloca is OK here since we are on an error branch
         Value *tmp = ctx.builder.CreateAlloca(T_size, ConstantInt::get(T_size, nidxs));
-        for(size_t k=0; k < nidxs; k++) {
-            ctx.builder.CreateStore(idxs[k], ctx.builder.CreateInBoundsGEP(tmp, ConstantInt::get(T_size, k)));
+        for (size_t k = 0; k < nidxs; k++) {
+            ctx.builder.CreateStore(idxs[k], ctx.builder.CreateInBoundsGEP(T_size, tmp, ConstantInt::get(T_size, k)));
         }
         ctx.builder.CreateCall(prepare_call(jlboundserrorv_func),
             { mark_callee_rooted(a), tmp, ConstantInt::get(T_size, nidxs) });
@@ -2435,8 +2443,9 @@ static void emit_setfield(jl_codectx_t &ctx,
         Value *addr = data_pointer(ctx, strct);
         if (byte_offset > 0) {
             addr = ctx.builder.CreateInBoundsGEP(
-                emit_bitcast(ctx, maybe_decay_tracked(addr), T_pint8),
-                ConstantInt::get(T_size, byte_offset)); // TODO: use emit_struct_gep
+                    T_int8,
+                    emit_bitcast(ctx, maybe_decay_tracked(addr), T_pint8),
+                    ConstantInt::get(T_size, byte_offset)); // TODO: use emit_struct_gep
         }
         jl_value_t *jfty = jl_svecref(sty->types, idx0);
         if (jl_field_isptr(sty, idx0)) {
@@ -2558,7 +2567,9 @@ static jl_cgval_t emit_new_struct(jl_codectx_t &ctx, jl_value_t *ty, size_t narg
                 if (!jl_field_isptr(sty, i) && jl_is_uniontype(jl_field_type(sty, i))) {
                     tbaa_decorate(tbaa_unionselbyte, ctx.builder.CreateStore(
                             ConstantInt::get(T_int8, 0),
-                            ctx.builder.CreateInBoundsGEP(emit_bitcast(ctx, strct, T_pint8),
+                            ctx.builder.CreateInBoundsGEP(
+                                T_int8,
+                                emit_bitcast(ctx, strct, T_pint8),
                                 ConstantInt::get(T_size, jl_field_offset(sty, i) + jl_field_size(sty, i) - 1))));
                 }
             }
@@ -2578,7 +2589,7 @@ static jl_cgval_t emit_new_struct(jl_codectx_t &ctx, jl_value_t *ty, size_t narg
                 tbaa_decorate(strctinfo.tbaa, ctx.builder.CreateStore(
                         ConstantPointerNull::get(cast<PointerType>(T_prjlvalue)),
                         ctx.builder.CreateInBoundsGEP(T_prjlvalue, emit_bitcast(ctx, strct, T_pprjlvalue),
-                            ConstantInt::get(T_size, jl_field_offset(sty, i) / sizeof(void*)))));
+                                ConstantInt::get(T_size, jl_field_offset(sty, i) / sizeof(void*)))));
             }
         }
         for (size_t i = nargs; i < nf; i++) {
@@ -2586,7 +2597,7 @@ static jl_cgval_t emit_new_struct(jl_codectx_t &ctx, jl_value_t *ty, size_t narg
                 tbaa_decorate(tbaa_unionselbyte, ctx.builder.CreateStore(
                         ConstantInt::get(T_int8, 0),
                         ctx.builder.CreateInBoundsGEP(emit_bitcast(ctx, strct, T_pint8),
-                            ConstantInt::get(T_size, jl_field_offset(sty, i) + jl_field_size(sty, i) - 1))));
+                                ConstantInt::get(T_size, jl_field_offset(sty, i) + jl_field_size(sty, i) - 1))));
             }
         }
         bool need_wb = false;
diff --git a/src/gc.c b/src/gc.c
index 785018c5a5b05..1de7c1715ab34 100644
--- a/src/gc.c
+++ b/src/gc.c
@@ -3,6 +3,9 @@
 #include "gc.h"
 #include "julia_gcext.h"
 #include "julia_assert.h"
+#ifdef __GLIBC__
+#include <malloc.h> // for malloc_trim
+#endif
 
 #ifdef __cplusplus
 extern "C" {
@@ -555,6 +558,10 @@ static int prev_sweep_full = 1;
 // Full collection heuristics
 static int64_t live_bytes = 0;
 static int64_t promoted_bytes = 0;
+#ifdef __GLIBC__
+// maxrss at last malloc_trim
+static int64_t last_trim_maxrss = 0;
+#endif
 
 static int64_t last_full_live_ub = 0;
 static int64_t last_full_live_est = 0;
@@ -2500,7 +2507,9 @@ static void mark_roots(jl_gc_mark_cache_t *gc_cache, jl_gc_mark_sp_t *sp)
     gc_mark_queue_obj(gc_cache, sp, jl_main_module);
 
     // tasks
+#ifdef JULIA_ENABLE_THREADING
     jl_gc_mark_enqueued_tasks(gc_cache, sp);
+#endif
 
     // invisible builtin values
     if (jl_an_empty_vec_any != NULL)
@@ -2683,6 +2692,8 @@ static void jl_gc_queue_bt_buf(jl_gc_mark_cache_t *gc_cache, jl_gc_mark_sp_t *sp
     }
 }
 
+size_t jl_maxrss(void);
+
 // Only one thread should be running in this function
 static int _jl_gc_collect(jl_ptls_t ptls, int full)
 {
@@ -2839,6 +2850,18 @@ static int _jl_gc_collect(jl_ptls_t ptls, int full)
         }
     }
 
+#ifdef __GLIBC__
+    if (sweep_full) {
+        // issue #30653
+        // empirically, the malloc runaway seemed to occur within a growth gap
+        // of about 20-25%
+        if (jl_maxrss() > (last_trim_maxrss/4)*5) {
+            malloc_trim(0);
+            last_trim_maxrss = jl_maxrss();
+        }
+    }
+#endif
+
     uint64_t gc_end_t = jl_hrtime();
     uint64_t pause = gc_end_t - t0;
     gc_final_pause_end(t0, gc_end_t);
diff --git a/src/jl_uv.c b/src/jl_uv.c
index 5aa5c3ddf0962..3ca423171d4d3 100644
--- a/src/jl_uv.c
+++ b/src/jl_uv.c
@@ -190,6 +190,8 @@ JL_DLLEXPORT void jl_uv_req_set_data(uv_req_t *req, void *data) { req->data = da
 JL_DLLEXPORT void *jl_uv_handle_data(uv_handle_t *handle) { return handle->data; }
 JL_DLLEXPORT void *jl_uv_write_handle(uv_write_t *req) { return req->handle; }
 
+extern volatile unsigned _threadedregion;
+
 JL_DLLEXPORT int jl_run_once(uv_loop_t *loop)
 {
     jl_ptls_t ptls = jl_get_ptls_states();
@@ -207,13 +209,14 @@ JL_DLLEXPORT int jl_run_once(uv_loop_t *loop)
 JL_DLLEXPORT int jl_process_events(uv_loop_t *loop)
 {
     jl_ptls_t ptls = jl_get_ptls_states();
-    if (loop) {
+    if (loop && (_threadedregion || ptls->tid == 0)) {
         jl_gc_safepoint_(ptls);
-        JL_UV_LOCK();
-        loop->stop_flag = 0;
-        int r = uv_run(loop,UV_RUN_NOWAIT);
-        JL_UV_UNLOCK();
-        return r;
+        if (jl_mutex_trylock(&jl_uv_mutex)) {
+            loop->stop_flag = 0;
+            int r = uv_run(loop,UV_RUN_NOWAIT);
+            JL_UV_UNLOCK();
+            return r;
+        }
     }
     return 0;
 }
diff --git a/src/jloptions.c b/src/jloptions.c
index 4b11093433045..04f6f42165d61 100644
--- a/src/jloptions.c
+++ b/src/jloptions.c
@@ -620,8 +620,9 @@ JL_DLLEXPORT void jl_parse_opts(int *argcp, char ***argvp)
     }
     jl_options.code_coverage = codecov;
     jl_options.malloc_log = malloclog;
-    *argvp += optind;
-    *argcp -= optind;
+    int proc_args = *argcp < optind ? *argcp : optind;
+    *argvp += proc_args;
+    *argcp -= proc_args;
 }
 
 JL_DLLEXPORT void jl_set_ARGS(int argc, char **argv)
diff --git a/src/jltypes.c b/src/jltypes.c
index 0d59bdc3e659e..780930e2354c0 100644
--- a/src/jltypes.c
+++ b/src/jltypes.c
@@ -819,8 +819,21 @@ static int within_typevar(jl_value_t *t, jl_value_t *vlb, jl_value_t *vub)
 struct _jl_typestack_t;
 typedef struct _jl_typestack_t jl_typestack_t;
 
-static jl_value_t *inst_datatype(jl_datatype_t *dt, jl_svec_t *p, jl_value_t **iparams, size_t ntp,
-                                 int cacheable, jl_typestack_t *stack);
+static jl_value_t *inst_datatype_inner(jl_datatype_t *dt, jl_svec_t *p, jl_value_t **iparams, size_t ntp,
+                                       int cacheable, jl_typestack_t *stack, jl_typeenv_t *env);
+
+// Build an environment mapping a TypeName's parameters to parameter values.
+// This is the environment needed for instantiating a type's supertype and field types.
+static jl_value_t *inst_datatype_env(jl_value_t *dt, jl_svec_t *p, jl_value_t **iparams, size_t ntp,
+                                     int cacheable, jl_typestack_t *stack, jl_typeenv_t *env, int c)
+{
+    if (jl_is_datatype(dt))
+        return inst_datatype_inner((jl_datatype_t*)dt, p, iparams, ntp, cacheable, stack, env);
+    assert(jl_is_unionall(dt));
+    jl_unionall_t *ua = (jl_unionall_t*)dt;
+    jl_typeenv_t e = { ua->var, iparams[c], env };
+    return inst_datatype_env(ua->body, p, iparams, ntp, cacheable, stack, &e, c + 1);
+}
 
 jl_value_t *jl_apply_type(jl_value_t *tc, jl_value_t **params, size_t n)
 {
@@ -836,12 +849,13 @@ jl_value_t *jl_apply_type(jl_value_t *tc, jl_value_t **params, size_t n)
         if (jl_is_datatype(u) && n == jl_nparams((jl_datatype_t*)u) &&
             ((jl_datatype_t*)u)->name->wrapper == tc) {
             int cacheable = 1;
-            for(i=0; i < n; i++) {
+            for (i = 0; i < n; i++) {
                 if (jl_has_free_typevars(params[i])) {
-                    cacheable = 0; break;
+                    cacheable = 0;
+                    break;
                 }
             }
-            return inst_datatype((jl_datatype_t*)u, NULL, params, n, cacheable, NULL);
+            return inst_datatype_env(tc, NULL, params, n, cacheable, NULL, NULL, 0);
         }
     }
     JL_GC_PUSH1(&tc);
@@ -1068,6 +1082,8 @@ static jl_value_t *normalize_vararg(jl_value_t *va)
     return va;
 }
 
+static jl_value_t *_jl_instantiate_type_in_env(jl_value_t *ty, jl_unionall_t *env, jl_value_t **vals, jl_typeenv_t *prev, jl_typestack_t *stack);
+
 static jl_value_t *inst_datatype_inner(jl_datatype_t *dt, jl_svec_t *p, jl_value_t **iparams, size_t ntp,
                                        int cacheable, jl_typestack_t *stack, jl_typeenv_t *env)
 {
@@ -1244,6 +1260,7 @@ static jl_value_t *inst_datatype_inner(jl_datatype_t *dt, jl_svec_t *p, jl_value
     if (cacheable && !ndt->abstract)
         ndt->uid = jl_assign_type_uid();
 
+    jl_datatype_t *primarydt = ((jl_datatype_t*)jl_unwrap_unionall(tn->wrapper));
     if (istuple || isnamedtuple) {
         ndt->super = jl_any_type;
     }
@@ -1252,10 +1269,12 @@ static jl_value_t *inst_datatype_inner(jl_datatype_t *dt, jl_svec_t *p, jl_value
         jl_gc_wb(ndt, ndt->super);
     }
     jl_svec_t *ftypes = dt->types;
+    if (ftypes == NULL)
+        ftypes = primarydt->types;
     if (ftypes == NULL || dt->super == NULL) {
         // in the process of creating this type definition:
         // need to instantiate the super and types fields later
-        assert(inside_typedef && !istuple && !isnamedtuple);
+        assert((inside_typedef || primarydt->super) && !istuple && !isnamedtuple);
         arraylist_push(&partial_inst, ndt);
     }
     else {
@@ -1292,25 +1311,6 @@ static jl_value_t *inst_datatype_inner(jl_datatype_t *dt, jl_svec_t *p, jl_value
     return (jl_value_t*)ndt;
 }
 
-// Build an environment mapping a TypeName's parameters to parameter values.
-// This is the environment needed for instantiating a type's supertype and field types.
-static jl_value_t *inst_datatype_env(jl_value_t *dt, jl_svec_t *p, jl_value_t **iparams, size_t ntp,
-                                     int cacheable, jl_typestack_t *stack, jl_typeenv_t *env, int c)
-{
-    if (jl_is_datatype(dt))
-        return inst_datatype_inner((jl_datatype_t*)dt, p, iparams, ntp, cacheable, stack, env);
-    assert(jl_is_unionall(dt));
-    jl_unionall_t *ua = (jl_unionall_t*)dt;
-    jl_typeenv_t e = { ua->var, iparams[c], env };
-    return inst_datatype_env(ua->body, p, iparams, ntp, cacheable, stack, &e, c+1);
-}
-
-static jl_value_t *inst_datatype(jl_datatype_t *dt, jl_svec_t *p, jl_value_t **iparams, size_t ntp,
-                                 int cacheable, jl_typestack_t *stack)
-{
-    return inst_datatype_env(dt->name->wrapper, p, iparams, ntp, cacheable, stack, NULL, 0);
-}
-
 static jl_tupletype_t *jl_apply_tuple_type_v_(jl_value_t **p, size_t np, jl_svec_t *params)
 {
     int cacheable = 1;
@@ -1319,9 +1319,7 @@ static jl_tupletype_t *jl_apply_tuple_type_v_(jl_value_t **p, size_t np, jl_svec
         if (!jl_is_concrete_type(p[i]))
             cacheable = 0;
     }
-    jl_datatype_t *ndt = (jl_datatype_t*)inst_datatype(jl_anytuple_type, params, p, np,
-                                                       cacheable, NULL);
-    return ndt;
+    return (jl_datatype_t*)inst_datatype_inner(jl_anytuple_type, params, p, np, cacheable, NULL, NULL);
 }
 
 JL_DLLEXPORT jl_tupletype_t *jl_apply_tuple_type(jl_svec_t *params)
@@ -1336,12 +1334,12 @@ JL_DLLEXPORT jl_tupletype_t *jl_apply_tuple_type_v(jl_value_t **p, size_t np)
 
 jl_datatype_t *jl_inst_concrete_tupletype(jl_svec_t *p)
 {
-    return (jl_datatype_t*)inst_datatype(jl_anytuple_type, p, jl_svec_data(p), jl_svec_len(p), 1, NULL);
+    return (jl_datatype_t*)inst_datatype_inner(jl_anytuple_type, p, jl_svec_data(p), jl_svec_len(p), 1, NULL, NULL);
 }
 
 jl_datatype_t *jl_inst_concrete_tupletype_v(jl_value_t **p, size_t np)
 {
-    return (jl_datatype_t*)inst_datatype(jl_anytuple_type, NULL, p, np, 1, NULL);
+    return (jl_datatype_t*)inst_datatype_inner(jl_anytuple_type, NULL, p, np, 1, NULL, NULL);
 }
 
 static jl_svec_t *inst_all(jl_svec_t *p, jl_typeenv_t *env, jl_typestack_t *stack, int check)
@@ -1363,7 +1361,7 @@ static jl_value_t *inst_tuple_w_(jl_value_t *t, jl_typeenv_t *env, jl_typestack_
     jl_svec_t *tp = tt->parameters;
     size_t ntp = jl_svec_len(tp);
     // Instantiate NTuple{3,Int}
-    // Note this does not instantiate Tuple{Vararg{Int,3}}; that's done in inst_datatype
+    // Note this does not instantiate Tuple{Vararg{Int,3}}; that's done in inst_datatype_inner
     if (jl_is_va_tuple(tt) && ntp == 1) {
         // If this is a Tuple{Vararg{T,N}} with known N, expand it to
         // a fixed-length tuple
@@ -1389,12 +1387,13 @@ static jl_value_t *inst_tuple_w_(jl_value_t *t, jl_typeenv_t *env, jl_typestack_
     jl_value_t **iparams;
     int onstack = ntp < jl_page_size/sizeof(jl_value_t*);
     JL_GC_PUSHARGS(iparams, onstack ? ntp : 1);
-    jl_svec_t *ip_heap=NULL;
+    jl_svec_t *ip_heap = NULL;
     if (!onstack) {
         ip_heap = jl_alloc_svec(ntp);
         iparams[0] = (jl_value_t*)ip_heap;
         iparams = jl_svec_data(ip_heap);
     }
+    int bound = 0;
     int cacheable = 1;
     if (jl_is_va_tuple(tt))
         cacheable = 0;
@@ -1405,12 +1404,14 @@ static jl_value_t *inst_tuple_w_(jl_value_t *t, jl_typeenv_t *env, jl_typestack_
         iparams[i] = pi;
         if (ip_heap)
             jl_gc_wb(ip_heap, pi);
+        bound |= (pi != elt);
         if (cacheable && !jl_is_concrete_type(pi))
             cacheable = 0;
     }
-    jl_value_t *result = inst_datatype((jl_datatype_t*)tt, ip_heap, iparams, ntp, cacheable, stack);
+    if (bound)
+        t = inst_datatype_inner(tt, ip_heap, iparams, ntp, cacheable, stack, env);
     JL_GC_POP();
-    return result;
+    return t;
 }
 
 static jl_value_t *inst_type_w_(jl_value_t *t, jl_typeenv_t *env, jl_typestack_t *stack, int check)
@@ -1421,44 +1422,38 @@ static jl_value_t *inst_type_w_(jl_value_t *t, jl_typeenv_t *env, jl_typestack_t
         while (e != NULL) {
             if (e->var == (jl_tvar_t*)t) {
                 jl_value_t *val = e->val;
-                // TODO jb/subtype this seems unnecessary
-                //if (check && !jl_is_typevar(val) && !within_typevar(val, (jl_tvar_t*)t)) {
-                //    jl_type_error_rt("type parameter",
-                //                     jl_symbol_name(((jl_tvar_t*)t)->name), t, val);
-                //}
                 return val;
             }
             e = e->prev;
         }
-        return (jl_value_t*)t;
+        return t;
     }
     if (jl_is_unionall(t)) {
-        if (!jl_has_free_typevars(t))
-            return t;
         jl_unionall_t *ua = (jl_unionall_t*)t;
-        jl_value_t *res=NULL, *lb=ua->var->lb, *ub=ua->var->ub;
-        JL_GC_PUSH3(&lb, &ub, &res);
-        res = jl_new_struct(jl_unionall_type, ua->var, NULL);
-        if (jl_has_bound_typevars(ua->var->lb, env))
-            lb = inst_type_w_(ua->var->lb, env, stack, check);
-        if (jl_has_bound_typevars(ua->var->ub, env))
-            ub = inst_type_w_(ua->var->ub, env, stack, check);
-        if (lb != ua->var->lb || ub != ua->var->ub) {
-            ((jl_unionall_t*)res)->var = jl_new_typevar(ua->var->name, lb, ub);
-            jl_gc_wb(res, ((jl_unionall_t*)res)->var);
+        jl_value_t *lb = NULL;
+        jl_value_t *var = NULL;
+        jl_value_t *newbody = NULL;
+        JL_GC_PUSH3(&lb, &var, &newbody);
+        lb = inst_type_w_(ua->var->lb, env, stack, check);
+        var = inst_type_w_(ua->var->ub, env, stack, check);
+        if (lb != ua->var->lb || var != ua->var->ub) {
+            var = (jl_value_t*)jl_new_typevar(ua->var->name, lb, var);
+        }
+        else {
+            var = (jl_value_t*)ua->var;
         }
-        jl_typeenv_t newenv = { ua->var, (jl_value_t*)((jl_unionall_t*)res)->var, env };
-        jl_value_t *newbody = inst_type_w_(ua->body, &newenv, stack, check);
+        jl_typeenv_t newenv = { ua->var, var, env };
+        newbody = inst_type_w_(ua->body, &newenv, stack, check);
         if (newbody == (jl_value_t*)jl_emptytuple_type) {
             // NTuple{0} => Tuple{} can make a typevar disappear
-            res = (jl_value_t*)jl_emptytuple_type;
+            t = (jl_value_t*)jl_emptytuple_type;
         }
-        else {
-            ((jl_unionall_t*)res)->body = newbody;
-            jl_gc_wb(res, newbody);
+        else if (newbody != ua->body || var != (jl_value_t*)ua->var) {
+            // if t's parameters are not bound in the environment, return it uncopied (#9378)
+            t = jl_new_struct(jl_unionall_type, var, newbody);
         }
         JL_GC_POP();
-        return res;
+        return t;
     }
     if (jl_is_uniontype(t)) {
         jl_uniontype_t *u = (jl_uniontype_t*)t;
@@ -1466,23 +1461,19 @@ static jl_value_t *inst_type_w_(jl_value_t *t, jl_typeenv_t *env, jl_typestack_t
         jl_value_t *b = NULL;
         JL_GC_PUSH2(&a, &b);
         b = inst_type_w_(u->b, env, stack, check);
-        jl_value_t *res;
-        if (a == u->a && b == u->b) {
-            res = t;
-        }
-        else {
+        if (a != u->a || b != u->b) {
             jl_value_t *uargs[2] = {a, b};
-            res = jl_type_union(uargs, 2);
+            t = jl_type_union(uargs, 2);
         }
         JL_GC_POP();
-        return res;
+        return t;
     }
     if (!jl_is_datatype(t))
         return t;
     jl_datatype_t *tt = (jl_datatype_t*)t;
     jl_svec_t *tp = tt->parameters;
     if (tp == jl_emptysvec)
-        return (jl_value_t*)t;
+        return t;
     jl_typename_t *tn = tt->name;
     if (tn == jl_tuple_typename)
         return inst_tuple_w_(t, env, stack, check);
@@ -1490,19 +1481,19 @@ static jl_value_t *inst_type_w_(jl_value_t *t, jl_typeenv_t *env, jl_typestack_t
     jl_value_t **iparams;
     JL_GC_PUSHARGS(iparams, ntp);
     int cacheable = 1, bound = 0;
-    for(i=0; i < ntp; i++) {
+    for (i = 0; i < ntp; i++) {
         jl_value_t *elt = jl_svecref(tp, i);
-        iparams[i] = (jl_value_t*)inst_type_w_(elt, env, stack, check);
-        bound |= (iparams[i] != elt);
-        if (cacheable && jl_has_free_typevars(iparams[i]))
+        jl_value_t *pi = inst_type_w_(elt, env, stack, check);
+        iparams[i] = pi;
+        bound |= (pi != elt);
+        if (cacheable && jl_has_free_typevars(pi))
             cacheable = 0;
     }
     // if t's parameters are not bound in the environment, return it uncopied (#9378)
-    if (!bound) { JL_GC_POP(); return (jl_value_t*)t; }
-
-    jl_value_t *result = inst_datatype((jl_datatype_t*)tt, NULL, iparams, ntp, cacheable, stack);
+    if (bound)
+        t = inst_datatype_inner(tt, NULL, iparams, ntp, cacheable, stack, env);
     JL_GC_POP();
-    return result;
+    return t;
 }
 
 jl_value_t *instantiate_with(jl_value_t *t, jl_value_t **env, size_t n, jl_typeenv_t *te, jl_typestack_t *stack)
@@ -1519,13 +1510,13 @@ jl_value_t *jl_instantiate_type_with(jl_value_t *t, jl_value_t **env, size_t n)
     return instantiate_with(t, env, n, NULL, NULL);
 }
 
-static jl_value_t *_jl_instantiate_type_in_env(jl_value_t *ty, jl_unionall_t *env, jl_value_t **vals, jl_typeenv_t *prev)
+static jl_value_t *_jl_instantiate_type_in_env(jl_value_t *ty, jl_unionall_t *env, jl_value_t **vals, jl_typeenv_t *prev, jl_typestack_t *stack)
 {
     jl_typeenv_t en = { env->var, vals[0], prev };
     if (jl_is_unionall(env->body))
-        return _jl_instantiate_type_in_env(ty, (jl_unionall_t*)env->body, vals + 1, &en);
+        return _jl_instantiate_type_in_env(ty, (jl_unionall_t*)env->body, vals + 1, &en, stack);
     else
-        return inst_type_w_(ty, &en, NULL, 1);
+        return inst_type_w_(ty, &en, stack, 1);
 }
 
 JL_DLLEXPORT jl_value_t *jl_instantiate_type_in_env(jl_value_t *ty, jl_unionall_t *env, jl_value_t **vals)
@@ -1533,7 +1524,7 @@ JL_DLLEXPORT jl_value_t *jl_instantiate_type_in_env(jl_value_t *ty, jl_unionall_
     jl_value_t *typ = ty;
     if (jl_is_unionall(env)) {
         JL_TRY {
-            typ = _jl_instantiate_type_in_env(ty, env, vals, NULL);
+            typ = _jl_instantiate_type_in_env(ty, env, vals, NULL, NULL);
         }
         JL_CATCH {
             typ = jl_bottom_type;
@@ -1599,11 +1590,14 @@ void jl_reinstantiate_inner_types(jl_datatype_t *t) // can throw!
 
             int k;
             assert(ndt->types == NULL);
-            ndt->types = jl_alloc_svec(jl_svec_len(t->types));
-            jl_gc_wb(ndt, ndt->types);
+            jl_svec_t *ft = jl_alloc_svec(jl_svec_len(t->types));
+            JL_GC_PUSH1(&ft);
             for (k=0; k < jl_svec_len(t->types); k++) {
-                jl_svecset(ndt->types, k, instantiate_with(jl_svecref(t->types,k), env, n, NULL, &top));
+                jl_svecset(ft, k, instantiate_with(jl_svecref(t->types,k), env, n, NULL, &top));
             }
+            ndt->types = ft;
+            jl_gc_wb(ndt, ndt->types);
+            JL_GC_POP();
             if (ndt->uid) { // cacheable
                 jl_compute_field_offsets(ndt);
             }
diff --git a/src/julia-syntax.scm b/src/julia-syntax.scm
index 171e607977021..1ae4454ce1a86 100644
--- a/src/julia-syntax.scm
+++ b/src/julia-syntax.scm
@@ -840,9 +840,9 @@
                      (error (string "field name \"" (deparse v) "\" is not a symbol"))))
                field-names)
      `(block
+       (global ,name) (const ,name)
        (scope-block
         (block
-         (global ,name) (const ,name)
          ,@(map (lambda (v) `(local ,v)) params)
          ,@(map (lambda (n v) (make-assignment n (bounds-to-TypeVar v #t))) params bounds)
          (struct_type ,name (call (core svec) ,@params)
@@ -1794,6 +1794,14 @@
                 (else
                  (error (string "invalid " syntax-str " \"" (deparse el) "\""))))))))
 
+;; move an assignment into the last statement of a block to keep more statements at top level
+(define (sink-assignment lhs rhs)
+  (if (and (pair? rhs) (eq? (car rhs) 'block))
+      (let ((rr (reverse (cdr rhs))))
+        `(block ,@(reverse (cdr rr))
+                (= ,lhs ,(car rr))))
+      `(= ,lhs ,rhs)))
+
 (define (expand-forms e)
   (if (or (atom? e) (memq (car e) '(quote inert top core globalref outerref line module toplevel ssavalue null meta using import export)))
       e
@@ -1882,20 +1890,13 @@
                         ,@(map (lambda (l) `(= ,l ,rr))
                                lhss)
                         (unnecessary ,rr)))))))
-      ((and (symbol-like? lhs) (valid-name? lhs))
-       `(= ,lhs ,(expand-forms (caddr e))))
+      ((or (and (symbol-like? lhs) (valid-name? lhs))
+           (globalref? lhs))
+       (sink-assignment lhs (expand-forms (caddr e))))
       ((atom? lhs)
        (error (string "invalid assignment location \"" (deparse lhs) "\"")))
       (else
        (case (car lhs)
-         ((globalref)
-          ;; M.b =
-          (let* ((rhs (caddr e))
-                 (rr  (if (or (symbol-like? rhs) (atom? rhs)) rhs (make-ssavalue))))
-            `(block
-              ,.(if (eq? rr rhs) '() `((= ,rr ,(expand-forms rhs))))
-              (= ,lhs ,rr)
-              (unnecessary ,rr))))
          ((|.|)
           ;; a.b =
           (let* ((a   (cadr lhs))
@@ -1909,9 +1910,9 @@
                           b (make-ssavalue)))
                   (rr (if (or (symbol-like? rhs) (atom? rhs)) rhs (make-ssavalue))))
               `(block
-                ,.(if (eq? aa a)   '() `((= ,aa ,(expand-forms a))))
-                ,.(if (eq? bb b)   '() `((= ,bb ,(expand-forms b))))
-                ,.(if (eq? rr rhs) '() `((= ,rr ,(expand-forms rhs))))
+                ,.(if (eq? aa a)   '() (list (sink-assignment aa (expand-forms a))))
+                ,.(if (eq? bb b)   '() (list (sink-assignment bb (expand-forms b))))
+                ,.(if (eq? rr rhs) '() (list (sink-assignment rr (expand-forms rhs))))
                 (call (top setproperty!) ,aa ,bb ,rr)
                 (unnecessary ,rr)))))
          ((tuple)
@@ -1933,7 +1934,7 @@
                 (let* ((xx  (if (or (and (symbol? x) (not (memq x lhss)))
                                     (ssavalue? x))
                                 x (make-ssavalue)))
-                       (ini (if (eq? x xx) '() `((= ,xx ,(expand-forms x)))))
+                       (ini (if (eq? x xx) '() (list (sink-assignment xx (expand-forms x)))))
                        (n   (length lhss))
                        (st  (gensy)))
                   `(block
@@ -1965,7 +1966,7 @@
                    (stmts (if reuse `((= ,arr ,(expand-forms a))) '()))
                    (rrhs (and (pair? rhs) (not (ssavalue? rhs)) (not (quoted? rhs))))
                    (r    (if rrhs (make-ssavalue) rhs))
-                   (rini (if rrhs `((= ,r ,(expand-forms rhs))) '())))
+                   (rini (if rrhs (list (sink-assignment r (expand-forms rhs))) '())))
               (receive
                (new-idxs stuff) (process-indices arr idxs)
                `(block
diff --git a/src/macroexpand.scm b/src/macroexpand.scm
index e1d607885b10d..3ed334b2f4d27 100644
--- a/src/macroexpand.scm
+++ b/src/macroexpand.scm
@@ -414,6 +414,14 @@
                    (body (cadr e))
                    (m (caddr e)))
               (resolve-expansion-vars-with-new-env body env m parent-scope inarg #t)))
+           ((tuple)
+            (cons (car e)
+                  (map (lambda (x)
+                         (if (assignment? x)
+                             `(= ,(unescape (cadr x))
+                                 ,(resolve-expansion-vars-with-new-env (caddr x) env m parent-scope inarg))
+                             (resolve-expansion-vars-with-new-env x env m parent-scope inarg)))
+                       (cdr e))))
 
            ;; todo: trycatch
            (else
@@ -488,10 +496,17 @@
         ((and (eq? (car e) '=) (not (function-def? e)))
          (append! (filter symbol? (decl-vars* (cadr e)))
                   (find-assigned-vars-in-expansion (caddr e) #f)))
+        ((eq? (car e) 'tuple)
+         (apply append! (map (lambda (x)
+                               (find-assigned-vars-in-expansion (if (assignment? x)
+                                                                    (caddr x)
+                                                                    x)
+                                                                #f))
+                             (cdr e))))
         (else
          (apply append! (map (lambda (x)
                                (find-assigned-vars-in-expansion x #f))
-                             e)))))
+                             (cdr e))))))
 
 (define (keywords-introduced-by e)
   (let ((v (pattern-expand1 keywords-introduced-by-patterns e)))
diff --git a/src/partr.c b/src/partr.c
index 4c8fc326e2195..11b7c985b132e 100644
--- a/src/partr.c
+++ b/src/partr.c
@@ -14,8 +14,6 @@
 extern "C" {
 #endif
 
-#define JULIA_ENABLE_PARTR
-
 #ifdef JULIA_ENABLE_THREADING
 
 // GC functions used
@@ -176,6 +174,13 @@ static inline jl_task_t *multiq_deletemin(void)
 }
 
 
+void jl_gc_mark_enqueued_tasks(jl_gc_mark_cache_t *gc_cache, jl_gc_mark_sp_t *sp)
+{
+    for (int16_t i = 0; i < heap_p; ++i)
+        for (int16_t j = 0; j < heaps[i].ntasks; ++j)
+            jl_gc_mark_queue_obj_explicit(gc_cache, sp, (jl_value_t *)heaps[i].tasks[j]);
+}
+
 
 // parallel task runtime
 // ---
@@ -217,8 +222,18 @@ void jl_threadfun(void *arg)
     jl_finish_task(jl_current_task, jl_nothing); // noreturn
 }
 
+// enqueue the specified task for execution
+JL_DLLEXPORT void jl_enqueue_task(jl_task_t *task)
+{
+    multiq_insert(task, task->prio);
+}
+
+#endif // JULIA_ENABLE_THREADING
+
+
 JL_DLLEXPORT void jl_wakeup_thread(int16_t tid)
 {
+#ifdef JULIA_ENABLE_THREADING
     jl_ptls_t ptls = jl_get_ptls_states();
     /* ensure thread tid is awake if necessary */
     if (ptls->tid != tid && !_threadedregion && tid != -1) {
@@ -230,23 +245,25 @@ JL_DLLEXPORT void jl_wakeup_thread(int16_t tid)
         jl_wake_libuv();
     else
         uv_stop(jl_global_event_loop());
-}
-
-
-// enqueue the specified task for execution
-JL_DLLEXPORT void jl_enqueue_task(jl_task_t *task)
-{
-    multiq_insert(task, task->prio);
+#else
+    uv_stop(jl_global_event_loop());
+#endif
 }
 
 
 // get the next runnable task from the multiq
 static jl_task_t *get_next_task(jl_value_t *getsticky)
 {
+    jl_gc_safepoint();
     jl_task_t *task = (jl_task_t*)jl_apply(&getsticky, 1);
     if (jl_typeis(task, jl_task_type))
         return task;
+#ifdef JULIA_ENABLE_THREADING
+    jl_gc_safepoint();
     return multiq_deletemin();
+#else
+    return NULL;
+#endif
 }
 
 
@@ -258,7 +275,6 @@ JL_DLLEXPORT jl_task_t *jl_task_get_next(jl_value_t *getsticky)
     jl_task_t *task;
 
     while (1) {
-        jl_gc_safepoint();
         task = get_next_task(getsticky);
         if (task)
             return task;
@@ -277,6 +293,7 @@ JL_DLLEXPORT jl_task_t *jl_task_get_next(jl_value_t *getsticky)
 #endif
                 }
             }
+#ifdef JULIA_ENABLE_THREADING
             else {
                 int sleepnow = 0;
                 uv_mutex_lock(&sleep_lock);
@@ -293,6 +310,7 @@ JL_DLLEXPORT jl_task_t *jl_task_get_next(jl_value_t *getsticky)
                     jl_gc_safe_leave(ptls, gc_state);
                 }
             }
+#endif
         }
         else {
             if (++spin_count > 1000 && jl_atomic_load(&jl_uv_n_waiters) == 0 && jl_mutex_trylock(&jl_uv_mutex)) {
@@ -317,16 +335,6 @@ JL_DLLEXPORT jl_task_t *jl_task_get_next(jl_value_t *getsticky)
     }
 }
 
-
-void jl_gc_mark_enqueued_tasks(jl_gc_mark_cache_t *gc_cache, jl_gc_mark_sp_t *sp)
-{
-    for (int16_t i = 0; i < heap_p; ++i)
-        for (int16_t j = 0; j < heaps[i].ntasks; ++j)
-            jl_gc_mark_queue_obj_explicit(gc_cache, sp, (jl_value_t *)heaps[i].tasks[j]);
-}
-
-#endif // JULIA_ENABLE_THREADING
-
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/subtype.c b/src/subtype.c
index 7cabc63b9416b..d1c37498cb05a 100644
--- a/src/subtype.c
+++ b/src/subtype.c
@@ -92,7 +92,8 @@ typedef struct jl_stenv_t {
     jl_value_t **envout;      // for passing caller the computed bounds of right-side variables
     int envsz;                // length of envout
     int envidx;               // current index in envout
-    int invdepth;             // current number of invariant constructors we're nested in
+    int invdepth;             // # of invariant constructors we're nested in on the left
+    int Rinvdepth;            // # of invariant constructors we're nested in on the right
     int ignore_free;          // treat free vars as black boxes; used during intersection
     int intersection;         // true iff subtype is being called from intersection
     int emptiness_only;       // true iff intersection only needs to test for emptiness
@@ -498,7 +499,7 @@ static void record_var_occurrence(jl_varbinding_t *vb, jl_stenv_t *e, int param)
 {
     if (vb != NULL && param) {
         // saturate counters at 2; we don't need values bigger than that
-        if (param == 2 && e->invdepth > vb->depth0 && vb->occurs_inv < 2)
+        if (param == 2 && (vb->right ? e->Rinvdepth : e->invdepth) > vb->depth0 && vb->occurs_inv < 2)
             vb->occurs_inv++;
         else if (vb->occurs_cov < 2)
             vb->occurs_cov++;
@@ -517,7 +518,7 @@ static int var_outside(jl_stenv_t *e, jl_tvar_t *x, jl_tvar_t *y)
     return 0;
 }
 
-static jl_value_t *intersect_aside(jl_value_t *x, jl_value_t *y, jl_stenv_t *e, int depth);
+static jl_value_t *intersect_aside(jl_value_t *x, jl_value_t *y, jl_stenv_t *e, int R, int d);
 
 // check that type var `b` is <: `a`, and update b's upper bound.
 static int var_lt(jl_tvar_t *b, jl_value_t *a, jl_stenv_t *e, int param)
@@ -535,7 +536,7 @@ static int var_lt(jl_tvar_t *b, jl_value_t *a, jl_stenv_t *e, int param)
     // for this to work we need to compute issub(left,right) before issub(right,left),
     // since otherwise the issub(a, bb.ub) check in var_gt becomes vacuous.
     if (e->intersection) {
-        jl_value_t *ub = intersect_aside(bb->ub, a, e, bb->depth0);
+        jl_value_t *ub = intersect_aside(bb->ub, a, e, 0, bb->depth0);
         if (ub != (jl_value_t*)b)
             bb->ub = ub;
     }
@@ -662,7 +663,8 @@ static int subtype_unionall(jl_value_t *t, jl_unionall_t *u, jl_stenv_t *e, int8
         }
         btemp = btemp->prev;
     }
-    jl_varbinding_t vb = { u->var, u->var->lb, u->var->ub, R, NULL, 0, 0, 0, 0, e->invdepth, 0, NULL, e->vars };
+    jl_varbinding_t vb = { u->var, u->var->lb, u->var->ub, R, NULL, 0, 0, 0, 0,
+                           R ? e->Rinvdepth : e->invdepth, 0, NULL, e->vars };
     JL_GC_PUSH4(&u, &vb.lb, &vb.ub, &vb.innervars);
     e->vars = &vb;
     int ans;
@@ -787,8 +789,10 @@ static int check_vararg_length(jl_value_t *v, ssize_t n, jl_stenv_t *e)
         jl_value_t *nn = jl_box_long(n);
         JL_GC_PUSH1(&nn);
         e->invdepth++;
+        e->Rinvdepth++;
         int ans = subtype(nn, N, e, 2) && subtype(N, nn, e, 0);
         e->invdepth--;
+        e->Rinvdepth--;
         JL_GC_POP();
         if (!ans)
             return 0;
@@ -1044,13 +1048,16 @@ static int subtype(jl_value_t *x, jl_value_t *y, jl_stenv_t *e, int param)
             if (!subtype(xp1, yp1, e, 1)) return 0;
             // Vararg{T,N} <: Vararg{T2,N2}; equate N and N2
             e->invdepth++;
+            e->Rinvdepth++;
             int ans = forall_exists_equal(xp2, yp2, e);
             e->invdepth--;
+            e->Rinvdepth--;
             return ans;
         }
         size_t i, np = jl_nparams(xd);
         int ans = 1;
         e->invdepth++;
+        e->Rinvdepth++;
         for (i=0; i < np; i++) {
             jl_value_t *xi = jl_tparam(xd, i), *yi = jl_tparam(yd, i);
             if (!(xi == yi || forall_exists_equal(xi, yi, e))) {
@@ -1058,6 +1065,7 @@ static int subtype(jl_value_t *x, jl_value_t *y, jl_stenv_t *e, int param)
             }
         }
         e->invdepth--;
+        e->Rinvdepth--;
         return ans;
     }
     if (jl_is_type(y))
@@ -1168,7 +1176,7 @@ static void init_stenv(jl_stenv_t *e, jl_value_t **env, int envsz)
     if (envsz)
         memset(env, 0, envsz*sizeof(void*));
     e->envidx = 0;
-    e->invdepth = 0;
+    e->invdepth = e->Rinvdepth = 0;
     e->ignore_free = 0;
     e->intersection = 0;
     e->emptiness_only = 0;
@@ -1403,20 +1411,31 @@ JL_DLLEXPORT int jl_subtype_env(jl_value_t *x, jl_value_t *y, jl_value_t **env,
     return subtype;
 }
 
-static int subtype_in_env(jl_value_t *x, jl_value_t *y, jl_stenv_t *e)
+static int subtype_in_env_(jl_value_t *x, jl_value_t *y, jl_stenv_t *e, int invdepth, int Rinvdepth)
 {
     jl_stenv_t e2;
     init_stenv(&e2, NULL, 0);
     e2.vars = e->vars;
     e2.intersection = e->intersection;
     e2.ignore_free = e->ignore_free;
-    e2.invdepth = e->invdepth;
+    e2.invdepth = invdepth;
+    e2.Rinvdepth = Rinvdepth;
     e2.envsz = e->envsz;
     e2.envout = e->envout;
     e2.envidx = e->envidx;
     return forall_exists_subtype(x, y, &e2, 0);
 }
 
+static int subtype_in_env(jl_value_t *x, jl_value_t *y, jl_stenv_t *e)
+{
+    return subtype_in_env_(x, y, e, e->invdepth, e->Rinvdepth);
+}
+
+static int subtype_bounds_in_env(jl_value_t *x, jl_value_t *y, jl_stenv_t *e, int R, int d)
+{
+    return subtype_in_env_(x, y, e, R ? e->invdepth : d, R ? d : e->Rinvdepth);
+}
+
 JL_DLLEXPORT int jl_subtype(jl_value_t *x, jl_value_t *y)
 {
     return jl_subtype_env(x, y, NULL, 0);
@@ -1543,7 +1562,7 @@ static jl_value_t *intersect(jl_value_t *x, jl_value_t *y, jl_stenv_t *e, int pa
 static jl_value_t *intersect_all(jl_value_t *x, jl_value_t *y, jl_stenv_t *e);
 
 // intersect in nested union environment, similar to subtype_ccheck
-static jl_value_t *intersect_aside(jl_value_t *x, jl_value_t *y, jl_stenv_t *e, int depth)
+static jl_value_t *intersect_aside(jl_value_t *x, jl_value_t *y, jl_stenv_t *e, int R, int d)
 {
     // band-aid for #30335
     if (x == (jl_value_t*)jl_any_type && !jl_is_typevar(y))
@@ -1551,14 +1570,16 @@ static jl_value_t *intersect_aside(jl_value_t *x, jl_value_t *y, jl_stenv_t *e,
     if (y == (jl_value_t*)jl_any_type && !jl_is_typevar(x))
         return x;
 
-    int savedepth = e->invdepth;
     jl_unionstate_t oldRunions = e->Runions;
-    e->invdepth = depth;
+    int savedepth = e->invdepth, Rsavedepth = e->Rinvdepth;
+    // TODO: this doesn't quite make sense
+    e->invdepth = e->Rinvdepth = d;
 
     jl_value_t *res = intersect_all(x, y, e);
 
     e->Runions = oldRunions;
     e->invdepth = savedepth;
+    e->Rinvdepth = Rsavedepth;
     return res;
 }
 
@@ -1602,12 +1623,12 @@ static jl_value_t *set_var_to_const(jl_varbinding_t *bb, jl_value_t *v JL_MAYBE_
     return v;
 }
 
-static int try_subtype_in_env(jl_value_t *a, jl_value_t *b, jl_stenv_t *e)
+static int try_subtype_in_env(jl_value_t *a, jl_value_t *b, jl_stenv_t *e, int R, int d)
 {
     jl_value_t *root=NULL; jl_savedenv_t se;
     JL_GC_PUSH1(&root);
     save_env(e, &root, &se);
-    int ret = subtype_in_env(a, b, e);
+    int ret = subtype_bounds_in_env(a, b, e, R, d);
     restore_env(e, root, &se);
     free(se.buf);
     JL_GC_POP();
@@ -1629,7 +1650,7 @@ static void set_bound(jl_value_t **bound, jl_value_t *val, jl_tvar_t *v, jl_sten
 }
 
 // subtype, treating all vars as existential
-static int subtype_in_env_existential(jl_value_t *x, jl_value_t *y, jl_stenv_t *e)
+static int subtype_in_env_existential(jl_value_t *x, jl_value_t *y, jl_stenv_t *e, int R, int d)
 {
     jl_varbinding_t *v = e->vars;
     int len = 0;
@@ -1647,7 +1668,7 @@ static int subtype_in_env_existential(jl_value_t *x, jl_value_t *y, jl_stenv_t *
         v->right = 1;
         v = v->prev;
     }
-    int issub = subtype_in_env(x, y, e);
+    int issub = subtype_bounds_in_env(x, y, e, R, d);
     n = 0; v = e->vars;
     while (v != NULL) {
         v->right = rs[n++];
@@ -1661,7 +1682,7 @@ static jl_value_t *intersect_var(jl_tvar_t *b, jl_value_t *a, jl_stenv_t *e, int
 {
     jl_varbinding_t *bb = lookup(e, b);
     if (bb == NULL)
-        return R ? intersect_aside(a, b->ub, e, 0) : intersect_aside(b->ub, a, e, 0);
+        return R ? intersect_aside(a, b->ub, e, 1, 0) : intersect_aside(b->ub, a, e, 0, 0);
     if (bb->lb == bb->ub && jl_is_typevar(bb->lb) && bb->lb != (jl_value_t*)b)
         return intersect(a, bb->lb, e, param);
     if (!jl_is_type(a) && !jl_is_typevar(a))
@@ -1669,7 +1690,7 @@ static jl_value_t *intersect_var(jl_tvar_t *b, jl_value_t *a, jl_stenv_t *e, int
     int d = bb->depth0;
     jl_value_t *root=NULL; jl_savedenv_t se;
     if (param == 2) {
-        if (!(subtype_in_env_existential(bb->lb, a, e) && subtype_in_env_existential(a, bb->ub, e)))
+        if (!(subtype_in_env_existential(bb->lb, a, e, 0, d) && subtype_in_env_existential(a, bb->ub, e, 1, d)))
             return jl_bottom_type;
         jl_value_t *ub = a;
         if (ub != (jl_value_t*)b) {
@@ -1694,17 +1715,17 @@ static jl_value_t *intersect_var(jl_tvar_t *b, jl_value_t *a, jl_stenv_t *e, int
     }
     else if (bb->constraintkind == 0) {
         if (!jl_is_typevar(bb->ub) && !jl_is_typevar(a)) {
-            if (try_subtype_in_env(bb->ub, a, e))
+            if (try_subtype_in_env(bb->ub, a, e, 0, d))
                 return (jl_value_t*)b;
         }
-        return R ? intersect_aside(a, bb->ub, e, d) : intersect_aside(bb->ub, a, e, d);
+        return R ? intersect_aside(a, bb->ub, e, 1, d) : intersect_aside(bb->ub, a, e, 0, d);
     }
     else if (bb->concrete || bb->constraintkind == 1) {
-        jl_value_t *ub = R ? intersect_aside(a, bb->ub, e, d) : intersect_aside(bb->ub, a, e, d);
+        jl_value_t *ub = R ? intersect_aside(a, bb->ub, e, 1, d) : intersect_aside(bb->ub, a, e, 0, d);
         JL_GC_PUSH1(&ub);
         if (ub == jl_bottom_type ||
             // this fixes issue #30122. TODO: better fix for R flag.
-            (!R && !subtype_in_env(bb->lb, a, e))) {
+            (!R && !subtype_bounds_in_env(bb->lb, a, e, 0, d))) {
             JL_GC_POP();
             return jl_bottom_type;
         }
@@ -1715,7 +1736,7 @@ static jl_value_t *intersect_var(jl_tvar_t *b, jl_value_t *a, jl_stenv_t *e, int
     else if (bb->constraintkind == 2) {
         // TODO: removing this case fixes many test_brokens in test/subtype.jl
         // but breaks other tests.
-        if (!subtype_in_env(a, bb->ub, e)) {
+        if (!subtype_bounds_in_env(a, bb->ub, e, 1, d)) {
             // mark var as unsatisfiable by making it circular
             bb->lb = (jl_value_t*)b;
             return jl_bottom_type;
@@ -1725,7 +1746,7 @@ static jl_value_t *intersect_var(jl_tvar_t *b, jl_value_t *a, jl_stenv_t *e, int
         return a;
     }
     assert(bb->constraintkind == 3);
-    jl_value_t *ub = R ? intersect_aside(a, bb->ub, e, d) : intersect_aside(bb->ub, a, e, d);
+    jl_value_t *ub = R ? intersect_aside(a, bb->ub, e, 1, d) : intersect_aside(bb->ub, a, e, 0, d);
     if (ub == jl_bottom_type)
         return jl_bottom_type;
     if (jl_is_typevar(a))
@@ -1743,7 +1764,7 @@ static jl_value_t *intersect_var(jl_tvar_t *b, jl_value_t *a, jl_stenv_t *e, int
     root = NULL;
     JL_GC_PUSH2(&root, &ub);
     save_env(e, &root, &se);
-    jl_value_t *ii = R ? intersect_aside(a, bb->lb, e, d) : intersect_aside(bb->lb, a, e, d);
+    jl_value_t *ii = R ? intersect_aside(a, bb->lb, e, 1, d) : intersect_aside(bb->lb, a, e, 0, d);
     if (ii == jl_bottom_type) {
         restore_env(e, root, &se);
         ii = (jl_value_t*)b;
@@ -1977,7 +1998,8 @@ static jl_value_t *intersect_unionall(jl_value_t *t, jl_unionall_t *u, jl_stenv_
 {
     jl_value_t *res=NULL, *res2=NULL, *save=NULL, *save2=NULL;
     jl_savedenv_t se, se2;
-    jl_varbinding_t vb = { u->var, u->var->lb, u->var->ub, R, NULL, 0, 0, 0, 0, e->invdepth, 0, NULL, e->vars };
+    jl_varbinding_t vb = { u->var, u->var->lb, u->var->ub, R, NULL, 0, 0, 0, 0,
+                           R ? e->Rinvdepth : e->invdepth, 0, NULL, e->vars };
     JL_GC_PUSH6(&res, &save2, &vb.lb, &vb.ub, &save, &vb.innervars);
     save_env(e, &save, &se);
     res = intersect_unionall_(t, u, e, R, param, &vb);
@@ -2183,8 +2205,10 @@ static jl_value_t *intersect_invariant(jl_value_t *x, jl_value_t *y, jl_stenv_t
         return (jl_subtype(x,y) && jl_subtype(y,x)) ? y : NULL;
     }
     e->invdepth++;
+    e->Rinvdepth++;
     jl_value_t *ii = intersect(x, y, e, 2);
     e->invdepth--;
+    e->Rinvdepth--;
     if (jl_is_typevar(x) && jl_is_typevar(y) && (jl_is_typevar(ii) || !jl_is_type(ii)))
         return ii;
     if (ii == jl_bottom_type) {
@@ -2312,7 +2336,7 @@ static jl_value_t *intersect(jl_value_t *x, jl_value_t *y, jl_stenv_t *e, int pa
                 }
                 jl_value_t *ub=NULL, *lb=NULL;
                 JL_GC_PUSH2(&lb, &ub);
-                ub = intersect_aside(xub, yub, e, xx ? xx->depth0 : 0);
+                ub = intersect_aside(xub, yub, e, 0, xx ? xx->depth0 : 0);
                 lb = simple_join(xlb, ylb);
                 if (yy) {
                     if (lb != y)
diff --git a/src/threading.c b/src/threading.c
index 67f9317d6f136..d3d91c7b9abe8 100644
--- a/src/threading.c
+++ b/src/threading.c
@@ -505,19 +505,23 @@ JL_DLLEXPORT void jl_threading_run(jl_value_t *func)
         args2[0] = schd_func;
         args2[1] = (jl_value_t*)t;
         jl_apply(args2, 2);
+#ifdef JULIA_ENABLE_THREADING
         if (i == 1) {
             // let threads know work is coming (optimistic)
             uv_mutex_lock(&sleep_lock);
             uv_cond_broadcast(&sleep_alarm);
             uv_mutex_unlock(&sleep_lock);
         }
+#endif
     }
+#ifdef JULIA_ENABLE_THREADING
     if (nthreads > 2) {
         // let threads know work is ready (guaranteed)
         uv_mutex_lock(&sleep_lock);
         uv_cond_broadcast(&sleep_alarm);
         uv_mutex_unlock(&sleep_lock);
     }
+#endif
     // join with all tasks
     JL_TRY {
         for (int i = 0; i < nthreads; i++) {
diff --git a/stdlib/Base64/src/buffer.jl b/stdlib/Base64/src/buffer.jl
index 9daff0d1c7a54..44a9c0931ac95 100644
--- a/stdlib/Base64/src/buffer.jl
+++ b/stdlib/Base64/src/buffer.jl
@@ -28,8 +28,8 @@ end
 
 function read_to_buffer(io::IO, buffer::Buffer)
     offset = buffer.ptr - pointer(buffer.data)
-    copyto!(buffer.data, 1, buffer.data, offset, buffer.size)
-    buffer.ptr = pointer(buffer.data) + buffer.size
+    copyto!(buffer.data, 1, buffer.data, offset + 1, buffer.size)
+    buffer.ptr = pointer(buffer.data)
     if !eof(io)
         n = min(bytesavailable(io), capacity(buffer) - buffer.size)
         unsafe_read(io, buffer.ptr + buffer.size, n)
diff --git a/stdlib/Base64/test/runtests.jl b/stdlib/Base64/test/runtests.jl
index 5a1fc9ee9cc65..c6b6a3715544f 100644
--- a/stdlib/Base64/test/runtests.jl
+++ b/stdlib/Base64/test/runtests.jl
@@ -16,12 +16,15 @@ dGhlIG1pbmQsIHRoYXQgYnkgYSBwZXJzZXZlcmFuY2Ugb2YgZGVsaWdodCBpbiB0aGUgY29udGlu
 dWVkIGFuZCBpbmRlZmF0aWdhYmxlIGdlbmVyYXRpb24gb2Yga25vd2xlZGdlLCBleGNlZWRzIHRo
 ZSBzaG9ydCB2ZWhlbWVuY2Ugb2YgYW55IGNhcm5hbCBwbGVhc3VyZS4="""
 
+const longEncodedText = "bmFtZSA9ICJHZW5pZSIKdXVpZCA9ICJjNDNjNzM2ZS1hMmQxLTExZTgtMTYx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\nZGYtYWIzZjljZjk5ZWI2IgoKW2NvbXBhdF0KanVsaWEgPSAiMSIK"
+const longDecodedText = "name = \"Genie\"\nuuid = \"c43c736e-a2d1-11e8-161f-af95117fbd1e\"\nauthors = [\"Adrian Salceanu <e@essenciary.com>\"]\nversion = \"0.9.4\"\n\n[deps]\nArgParse = \"c7e460c6-2fb9-53a9-8c5b-16f535851c63\"\nDates = \"ade2ca70-3891-5945-98fb-dc099432e06a\"\nDistributed = \"8ba89e20-285c-5b6f-9357-94700520ee1b\"\nGumbo = \"708ec375-b3d6-5a57-a7ce-8257bf98657a\"\nHTTP = \"cd3eb016-35fb-5094-929b-558a96fad6f3\"\nHttpCommon = \"77172c1b-203f-54ac-aa54-3f1198fe9f90\"\nJSON = \"682c06a0-de6a-54ab-a142-c8b1cf79cde6\"\nMarkdown = \"d6f4376e-aef5-505a-96c1-9c027394607a\"\nMbedTLS = \"739be429-bea8-5141-9913-cc70e7f3736d\"\nMillboard = \"39ec1447-df44-5f4c-beaa-866f30b4d3b2\"\nMiniLogging = \"f59402ec-0262-5707-a561-770af94bc5a6\"\nNettle = \"49dea1ee-f6fa-5aa6-9a11-8816cee7d4b9\"\nNullables = \"4d1e1d77-625e-5b40-9113-a560ec7a8ecd\"\nOrderedCollections = \"bac558e1-5e72-5ebc-8fee-abe8a469f55d\"\nPkg = \"44cfe95a-1eb2-52ea-b672-e2afdf69b78f\"\nReexport = \"189a3867-3050-52da-a836-e630ba90ab69\"\nRevise = \"295af30f-e4ad-537b-8983-00126c2a3abe\"\nSHA = \"ea8e919c-243c-51af-8825-aaa63cd721ce\"\nSerialization = \"9e88b42a-f829-5b0c-bbe9-9e923198166b\"\nSockets = \"6462fe0b-24de-5631-8697-dd941f90decc\"\nURIParser = \"30578b45-9adc-5946-b283-645ec420af67\"\nUnicode = \"4ec0a83e-493e-50e2-b9ac-8f72acf5a8f5\"\nYAML = \"ddb6d928-2868-570f-bddf-ab3f9cf99eb6\"\n\n[compat]\njulia = \"1\"\n"
+
 @testset "Examples" begin
     # Encode and decode
     fname = tempname()
     open(fname, "w") do f
         opipe = Base64EncodePipe(f)
-        write(opipe,inputText)
+        write(opipe, inputText)
         @test close(opipe) === nothing
     end
 
@@ -58,15 +61,18 @@ ZSBzaG9ydCB2ZWhlbWVuY2Ugb2YgYW55IGNhcm5hbCBwbGVhc3VyZS4="""
     #@test read(ipipe, String) == inputText
 
     # Decode with two padding characters ("==")
-    ipipe = Base64DecodePipe(IOBuffer(string(encodedMaxLine76[1:end-2],"==")))
-    @test read(ipipe, String) == inputText[1:end-1]
+    ipipe = Base64DecodePipe(IOBuffer(string(encodedMaxLine76[1:end - 2], "==")))
+    @test read(ipipe, String) == inputText[1:end - 1]
 
     # Test incorrect format
-    ipipe = Base64DecodePipe(IOBuffer(encodedMaxLine76[1:end-3]))
+    ipipe = Base64DecodePipe(IOBuffer(encodedMaxLine76[1:end - 3]))
     @test_throws ArgumentError read(ipipe, String)
 
     # issue #21314
     @test base64decode(chomp("test")) == base64decode("test")
+
+    # issue #32397
+    @test String(base64decode(longEncodedText)) == longDecodedText;
 end
 
 @testset "Random data" begin
@@ -85,6 +91,25 @@ Base.show(io::IO, ::MIME"image/png", ::PNG) = print(io, "PNG")
     @test stringmime("text/html", "raw html data") == "raw html data"
     @test stringmime("text/plain", "string") == "\"string\""
     @test stringmime("image/png", UInt8[2,3,4,7]) == "AgMEBw=="
-    @test stringmime("text/plain", 3.141592653589793, context=:compact=>true) == "3.14159"
+    @test stringmime("text/plain", 3.141592653589793, context = :compact => true) == "3.14159"
     @test stringmime("image/png", PNG()) == stringmime(MIME("image/png"), PNG()) == "UE5H"
 end
+
+function splace(in::String, p = 0.3)
+    spaces = ["\n"," "]
+    len = length(in)
+    len == 0 && return in
+    rc::String = ""
+    i = 1
+    for (x, v) in enumerate(sort(randsubseq(collect(1:len), p)))
+        rc = rc * in[i:v] * rand(spaces)^rand(Int.(1:10))
+        i = v + 1
+    end
+    return rc * in[i:len] * rand(spaces)^rand(Int.(1:10))
+end
+
+@testset "lstrsplaced" begin
+    for _ in 1:1000
+        @test String(base64decode(splace(longEncodedText))) == longDecodedText
+    end
+end
diff --git a/stdlib/DelimitedFiles/src/DelimitedFiles.jl b/stdlib/DelimitedFiles/src/DelimitedFiles.jl
index 99bd0a7217cae..2a545eb413bae 100644
--- a/stdlib/DelimitedFiles/src/DelimitedFiles.jl
+++ b/stdlib/DelimitedFiles/src/DelimitedFiles.jl
@@ -226,7 +226,7 @@ readdlm(input, dlm::AbstractChar, T::Type, eol::AbstractChar; opts...) =
     readdlm_auto(input, dlm, T, eol, false; opts...)
 
 readdlm_auto(input::Vector{UInt8}, dlm::AbstractChar, T::Type, eol::AbstractChar, auto::Bool; opts...) =
-    readdlm_string(String(input), dlm, T, eol, auto, val_opts(opts))
+    readdlm_string(String(copyto!(Base.StringVector(length(input)), input)), dlm, T, eol, auto, val_opts(opts))
 readdlm_auto(input::IO, dlm::AbstractChar, T::Type, eol::AbstractChar, auto::Bool; opts...) =
     readdlm_string(read(input, String), dlm, T, eol, auto, val_opts(opts))
 function readdlm_auto(input::AbstractString, dlm::AbstractChar, T::Type, eol::AbstractChar, auto::Bool; opts...)
diff --git a/stdlib/DelimitedFiles/test/runtests.jl b/stdlib/DelimitedFiles/test/runtests.jl
index c1a9700d09d99..900d97ace2122 100644
--- a/stdlib/DelimitedFiles/test/runtests.jl
+++ b/stdlib/DelimitedFiles/test/runtests.jl
@@ -288,6 +288,12 @@ let data = "\"1\",\"灣\"\"灣灣灣灣\",\"3\""
     @test readdlm(IOBuffer(data), ',') == Any[1 "灣\"灣灣灣灣" 3]
 end
 
+# reading from a byte array (#16731)
+let data = Vector{UInt8}("1,2,3\n4,5,6"), origdata = copy(data)
+    @test readdlm(data, ',') == [1 2 3; 4 5 6]
+    @test data == origdata
+end
+
 # issue #11484: useful error message for invalid readdlm filepath arguments
 @test_throws ArgumentError readdlm(tempdir())
 
diff --git a/stdlib/Distributed/src/macros.jl b/stdlib/Distributed/src/macros.jl
index 4285073ec90a3..d85e2af8f2e7d 100644
--- a/stdlib/Distributed/src/macros.jl
+++ b/stdlib/Distributed/src/macros.jl
@@ -172,7 +172,7 @@ Equivalent to calling `remotecall_eval(Main, procs, expr)`.
 """
 macro everywhere(ex)
     procs = GlobalRef(@__MODULE__, :procs)
-    return esc(:(@everywhere $procs() $ex))
+    return esc(:($(Distributed).@everywhere $procs() $ex))
 end
 
 macro everywhere(procs, ex)
diff --git a/stdlib/Distributed/src/pmap.jl b/stdlib/Distributed/src/pmap.jl
index 35f23acde33c5..77a59af94eed7 100644
--- a/stdlib/Distributed/src/pmap.jl
+++ b/stdlib/Distributed/src/pmap.jl
@@ -238,14 +238,11 @@ Return `head`: the first `n` elements of `c`;
 and `tail`: an iterator over the remaining elements.
 
 ```jldoctest
-julia> a = 1:10
-1:10
-
-julia> b, c = Base.head_and_tail(a, 3)
-([1,2,3],Base.Iterators.Rest{UnitRange{Int64},Int64}(1:10,4))
+julia> b, c = Distributed.head_and_tail(1:10, 3)
+([1, 2, 3], Base.Iterators.Rest{UnitRange{Int64},Int64}(1:10, 3))
 
 julia> collect(c)
-7-element Array{Any,1}:
+7-element Array{Int64,1}:
   4
   5
   6
@@ -268,7 +265,7 @@ function head_and_tail(c, n)
         i += 1
         head[i] = y[1]
     end
-    return head, Iterators.rest(c, s)
+    return head, Iterators.rest(c, y[2])
 end
 
 """
diff --git a/stdlib/Distributed/test/distributed_exec.jl b/stdlib/Distributed/test/distributed_exec.jl
index 90ecb16f82230..c00e8b01d75cc 100644
--- a/stdlib/Distributed/test/distributed_exec.jl
+++ b/stdlib/Distributed/test/distributed_exec.jl
@@ -1614,6 +1614,44 @@ for T in (UInt8, Int8, UInt16, Int16, UInt32, Int32, UInt64)
     @test n == 55
 end
 
+# issue #28966
+let code = """
+    import Distributed
+    Distributed.addprocs(1)
+    Distributed.@everywhere f() = myid()
+    for w in Distributed.workers()
+        @assert Distributed.remotecall_fetch(f, w) == w
+    end
+    """
+    @test success(`$(Base.julia_cmd()) --startup-file=no -e $code`)
+end
+
+# PR 32431: tests for internal Distributed.head_and_tail
+let (h, t) = Distributed.head_and_tail(1:10, 3)
+    @test h == 1:3
+    @test collect(t) == 4:10
+end
+let (h, t) = Distributed.head_and_tail(1:10, 0)
+    @test h == []
+    @test collect(t) == 1:10
+end
+let (h, t) = Distributed.head_and_tail(1:3, 5)
+    @test h == 1:3
+    @test collect(t) == []
+end
+let (h, t) = Distributed.head_and_tail(1:3, 3)
+    @test h == 1:3
+    @test collect(t) == []
+end
+let (h, t) = Distributed.head_and_tail(Int[], 3)
+    @test h == []
+    @test collect(t) == []
+end
+let (h, t) = Distributed.head_and_tail(Int[], 0)
+    @test h == []
+    @test collect(t) == []
+end
+
 # Run topology tests last after removing all workers, since a given
 # cluster at any time only supports a single topology.
 rmprocs(workers())
diff --git a/stdlib/LibGit2/test/online.jl b/stdlib/LibGit2/test/online.jl
index 7c7029d3f064c..888af97fe0a69 100644
--- a/stdlib/LibGit2/test/online.jl
+++ b/stdlib/LibGit2/test/online.jl
@@ -68,7 +68,8 @@ mktempdir() do dir
                 error("unexpected")
             catch ex
                 @test isa(ex, LibGit2.Error.GitError)
-                @test ex.code == LibGit2.Error.EAUTH
+                # Return code seems to vary, see #32186, #32219
+                @test ex.code ∈ (LibGit2.Error.EAUTH, LibGit2.Error.ERROR)
             end
             Base.shred!(cred)
         end
diff --git a/stdlib/LinearAlgebra/src/symmetric.jl b/stdlib/LinearAlgebra/src/symmetric.jl
index 71f557b15fbed..995a2e42dcdb5 100644
--- a/stdlib/LinearAlgebra/src/symmetric.jl
+++ b/stdlib/LinearAlgebra/src/symmetric.jl
@@ -74,6 +74,12 @@ implemented for a custom type, so should be `symmetric_type`, and vice versa.
 function symmetric_type(::Type{T}) where {S, T<:AbstractMatrix{S}}
     return Symmetric{Union{S, promote_op(transpose, S), symmetric_type(S)}, T}
 end
+function symmetric_type(::Type{T}) where {S<:Number, T<:AbstractMatrix{S}}
+    return Symmetric{S, T}
+end
+function symmetric_type(::Type{T}) where {S<:AbstractMatrix, T<:AbstractMatrix{S}}
+    return Symmetric{AbstractMatrix, T}
+end
 symmetric_type(::Type{T}) where {T<:Number} = T
 
 struct Hermitian{T,S<:AbstractMatrix{<:T}} <: AbstractMatrix{T}
@@ -147,9 +153,15 @@ The type of the object returned by `hermitian(::T, ::Symbol)`. For matrices, thi
 appropriately typed `Hermitian`, for `Number`s, it is the original type. If `hermitian` is
 implemented for a custom type, so should be `hermitian_type`, and vice versa.
 """
-function hermitian_type(::Type{T}) where {S,T<:AbstractMatrix{S}}
+function hermitian_type(::Type{T}) where {S, T<:AbstractMatrix{S}}
     return Hermitian{Union{S, promote_op(adjoint, S), hermitian_type(S)}, T}
 end
+function hermitian_type(::Type{T}) where {S<:Number, T<:AbstractMatrix{S}}
+    return Hermitian{S, T}
+end
+function hermitian_type(::Type{T}) where {S<:AbstractMatrix, T<:AbstractMatrix{S}}
+    return Hermitian{AbstractMatrix, T}
+end
 hermitian_type(::Type{T}) where {T<:Number} = T
 
 for (S, H) in ((:Symmetric, :Hermitian), (:Hermitian, :Symmetric))
@@ -402,8 +414,8 @@ function triu(A::Symmetric, k::Integer=0)
     end
 end
 
-(-)(A::Symmetric{Tv,S}) where {Tv,S} = Symmetric{Tv,S}(-A.data, A.uplo)
-(-)(A::Hermitian{Tv,S}) where {Tv,S} = Hermitian{Tv,S}(-A.data, A.uplo)
+(-)(A::Symmetric) = Symmetric(-A.data, sym_uplo(A.uplo))
+(-)(A::Hermitian) = Hermitian(-A.data, sym_uplo(A.uplo))
 
 ## Addition/subtraction
 for f in (:+, :-)
diff --git a/stdlib/LinearAlgebra/test/symmetric.jl b/stdlib/LinearAlgebra/test/symmetric.jl
index 6d9c95a1a3ff2..5a6d38cdb2c36 100644
--- a/stdlib/LinearAlgebra/test/symmetric.jl
+++ b/stdlib/LinearAlgebra/test/symmetric.jl
@@ -88,6 +88,8 @@ end
             @testset "Unary minus for Symmetric/Hermitian matrices" begin
                 @test (-Symmetric(asym))::typeof(Symmetric(asym)) == -asym
                 @test (-Hermitian(aherm))::typeof(Hermitian(aherm)) == -aherm
+                @test (-Symmetric([true true; false false]))::Symmetric{Int,Matrix{Int}} == [-1 -1; -1 0]
+                @test (-Hermitian([true false; true false]))::Hermitian{Int,Matrix{Int}} == [-1 0; 0 0]
             end
 
             @testset "Addition and subtraction for Symmetric/Hermitian matrices" begin
diff --git a/stdlib/Pkg.version b/stdlib/Pkg.version
index 59f6f4a249533..e0c956ac6dba1 100644
--- a/stdlib/Pkg.version
+++ b/stdlib/Pkg.version
@@ -1,2 +1,2 @@
 PKG_BRANCH = master
-PKG_SHA1 = b7d26be39a4e5467f73530592b27fe28e40f357b
+PKG_SHA1 = 394e7c5d55d3722f5b2ab660ca0a694ea0041974
diff --git a/stdlib/REPL/src/REPLCompletions.jl b/stdlib/REPL/src/REPLCompletions.jl
index c5e3ced9dfb01..9edb6d9e56ccd 100644
--- a/stdlib/REPL/src/REPLCompletions.jl
+++ b/stdlib/REPL/src/REPLCompletions.jl
@@ -530,14 +530,11 @@ function dict_identifier_key(str,tag)
         sym = Symbol(name)
         isdefined(obj, sym) || return (nothing, nothing, nothing)
         obj = getfield(obj, sym)
-        # Avoid `isdefined(::Array, ::Symbol)`
-        isa(obj, Array) && return (nothing, nothing, nothing)
     end
-    begin_of_key = first(something(findnext(r"\S", str, nextind(str, end_of_identifier) + 1), 1)) # 1 for [
-    begin_of_key==0 && return (true, nothing, nothing)
-    partial_key = str[begin_of_key:end]
-    (isa(obj, AbstractDict) && length(obj) < 1e6) || return (true, nothing, nothing)
-    return (obj, partial_key, begin_of_key)
+    (isa(obj, AbstractDict) && length(obj) < 1_000_000) || return (nothing, nothing, nothing)
+    begin_of_key = something(findnext(!isspace, str, nextind(str, end_of_identifier) + 1), # +1 for [
+                             lastindex(str)+1)
+    return (obj, str[begin_of_key:end], begin_of_key)
 end
 
 # This needs to be a separate non-inlined function, see #19441
@@ -581,13 +578,9 @@ function completions(string, pos, context_module=Main)::Completions
     # if completing a key in a Dict
     identifier, partial_key, loc = dict_identifier_key(partial,inc_tag)
     if identifier !== nothing
-        if partial_key !== nothing
-            matches = find_dict_matches(identifier, partial_key)
-            length(matches)==1 && (length(string) <= pos || string[pos+1] != ']') && (matches[1]*="]")
-            length(matches)>0 && return [DictCompletion(identifier, match) for match in sort!(matches)], loc:pos, true
-        else
-            return Completion[], 0:-1, false
-        end
+        matches = find_dict_matches(identifier, partial_key)
+        length(matches)==1 && (lastindex(string) <= pos || string[nextind(string,pos)] != ']') && (matches[1]*=']')
+        length(matches)>0 && return [DictCompletion(identifier, match) for match in sort!(matches)], loc:pos, true
     end
 
     # otherwise...
@@ -605,7 +598,7 @@ function completions(string, pos, context_module=Main)::Completions
            length(paths) == 1 &&  # Only close if there's a single choice,
            !isdir(expanduser(replace(string[startpos:prevind(string, first(r))] * paths[1].path,
                                      r"\\ " => " "))) &&  # except if it's a directory
-           (length(string) <= pos ||
+           (lastindex(string) <= pos ||
             string[nextind(string,pos)] != '"')  # or there's already a " at the cursor.
             paths[1] = PathCompletion(paths[1].path * "\"")
         end
diff --git a/stdlib/REPL/test/replcompletions.jl b/stdlib/REPL/test/replcompletions.jl
index eb19f8d60097b..5f3d9e9e57c19 100644
--- a/stdlib/REPL/test/replcompletions.jl
+++ b/stdlib/REPL/test/replcompletions.jl
@@ -266,6 +266,14 @@ let s = "\"C:\\\\ \\alpha"
     @test length(c) == 1
 end
 
+# test latex symbol completion in getindex expressions (#24705)
+let s = "tuple[\\alpha"
+    c, r, res = test_complete_context(s)
+    @test c[1] == "α"
+    @test r == 7:12
+    @test length(c) == 1
+end
+
 let s = "\\a"
     c, r, res = test_complete(s)
     "\\alpha" in c
@@ -863,7 +871,7 @@ function test_dict_completion(dict_name)
     @test c == Any[":α]"]
     s = "$dict_name["
     c, r = test_complete(s)
-    @test !isempty(c)
+    @test c == sort!(repr.(keys(Main.CompletionFoo.test_dict)))
 end
 test_dict_completion("CompletionFoo.test_dict")
 test_dict_completion("CompletionFoo.test_customdict")
diff --git a/stdlib/Sockets/src/addrinfo.jl b/stdlib/Sockets/src/addrinfo.jl
index 0ed5c8781915d..21066d0ea37fc 100644
--- a/stdlib/Sockets/src/addrinfo.jl
+++ b/stdlib/Sockets/src/addrinfo.jl
@@ -234,10 +234,14 @@ ip"fe80::9731:35af:e1c5:6e49"
 """
 function getipaddr(addr_type::Type{T}) where T<:IPAddr
     addrs = getipaddrs(addr_type)
+
     if length(addrs) == 0
         error("No networking interface available")
     end
-    return addrs[1]
+
+    # Prefer the first IPv4 address
+    i = something(findfirst(ip -> ip isa IPv4, addrs), 1)
+    return addrs[i]
 end
 getipaddr() = getipaddr(IPv4)
 
@@ -295,14 +299,5 @@ function getipaddrs(addr_type::Type{T}=IPAddr; loopback::Bool=false) where T<:IP
         end
     end
     ccall(:uv_free_interface_addresses, Cvoid, (Ptr{UInt8}, Int32), addr, count)
-    sort!(addresses, lt=(addr1,addr2) -> begin
-        if addr1 isa IPv4 && addr2 isa IPv6
-            return true
-        elseif addr1 isa IPv6 && addr2 isa IPv4
-            return false
-        else
-            return addr1 < addr2
-        end
-    end)
     return addresses
 end
diff --git a/stdlib/SparseArrays/src/sparseconvert.jl b/stdlib/SparseArrays/src/sparseconvert.jl
index bdadc3a4729ff..9f4bb6cd452f1 100644
--- a/stdlib/SparseArrays/src/sparseconvert.jl
+++ b/stdlib/SparseArrays/src/sparseconvert.jl
@@ -76,9 +76,6 @@ For other types return A itself.
 unwrap(A::Any) = A
 unwrap(A::AbstractMatrix) = iswrsparse(A) ? convert(SparseMatrixCSC, A) : convert(Array, A)
 
-import Base.copy
-copy(A::SubArray{T,2}) where T = getindex(unwrap(parent(A)), A.indices...)
-
 # For pure sparse matrices and vectors return A.
 # For wrapped sparse matrices or vectors convert to SparseMatrixCSC.
 # Handle nested wrappers properly.
diff --git a/stdlib/Statistics/Project.toml b/stdlib/Statistics/Project.toml
index 7c796eeab89aa..12c967736bbfb 100644
--- a/stdlib/Statistics/Project.toml
+++ b/stdlib/Statistics/Project.toml
@@ -6,7 +6,8 @@ LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
 SparseArrays = "2f01184e-e22b-5df5-ae63-d93ebab69eaf"
 
 [extras]
+Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [targets]
-test = ["Test"]
+test = ["Random", "Test"]
diff --git a/test/compiler/inference.jl b/test/compiler/inference.jl
index f98838b68560a..db0fe17fec228 100644
--- a/test/compiler/inference.jl
+++ b/test/compiler/inference.jl
@@ -1928,6 +1928,12 @@ Base.iterate(::Iterator27434, ::Any) = nothing
 @test @inferred((1, 2, 3) == (1, 2, 3))
 @test Core.Compiler.return_type(splat27434, Tuple{typeof(Iterators.repeated(1))}) == Union{}
 
+# issue #32465
+let rt = Base.return_types(splat27434, (NamedTuple{(:x,), Tuple{T}} where T,))
+    @test rt == Any[Tuple{Any}]
+    @test !Base.has_free_typevars(rt[1])
+end
+
 # issue #27078
 f27078(T::Type{S}) where {S} = isa(T, UnionAll) ? f27078(T.body) : T
 T27078 = Vector{Vector{T}} where T
diff --git a/test/strings/basic.jl b/test/strings/basic.jl
index af17c4dee095a..255c3b9b78505 100644
--- a/test/strings/basic.jl
+++ b/test/strings/basic.jl
@@ -377,6 +377,12 @@ end
     @test tryparse(Float32, "32o") === nothing
 end
 
+@testset "tryparse invalid chars" begin
+    # #32314: tryparse shouldn't throw, even given strings with invalid Chars
+    @test tryparse(UInt8, "\xb5")    === nothing
+    @test tryparse(UInt8, "100\xb5") === nothing  # Code path for numeric overflow
+end
+
 import Unicode
 
 @testset "issue #10994: handle embedded NUL chars for string parsing" begin
@@ -606,6 +612,8 @@ end
         @test repeat(s, 3) === S
         @test repeat(S, 3) === S*S*S
     end
+    # Issue #32160 (string allocation unsigned overflow)
+    @test_throws OutOfMemoryError repeat('x', typemax(Csize_t))
 end
 @testset "issue #12495: check that logical indexing attempt raises ArgumentError" begin
     @test_throws ArgumentError "abc"[[true, false, true]]
diff --git a/test/strings/util.jl b/test/strings/util.jl
index 43d88853c4db9..59024e972021b 100644
--- a/test/strings/util.jl
+++ b/test/strings/util.jl
@@ -41,6 +41,9 @@
     @test rpad("αβ", 8, "¹₂³") == "αβ¹₂³¹₂³"
     @test lpad("αβ", 9, "¹₂³") == "¹₂³¹₂³¹αβ"
     @test rpad("αβ", 9, "¹₂³") == "αβ¹₂³¹₂³¹"
+    # Issue #32160 (unsigned underflow in lpad/rpad)
+    @test lpad("xx", UInt(1), " ") == "xx"
+    @test rpad("xx", UInt(1), " ") == "xx"
 end
 
 # string manipulation
diff --git a/test/subtype.jl b/test/subtype.jl
index aeaafe751f961..571509d110d18 100644
--- a/test/subtype.jl
+++ b/test/subtype.jl
@@ -1543,3 +1543,8 @@ let X = LinearAlgebra.Symmetric{T, S} where S<:(AbstractArray{U, 2} where U<:T)
               LinearAlgebra.Symmetric{T, S} where S<:(AbstractArray{U, 2} where U<:T) where T}
     @test X <: Y
 end
+
+# issue #32386
+# TODO: intersect currently returns a bad answer here (it has free typevars)
+@test typeintersect(Type{S} where S<:(Array{Pair{_A,N} where N, 1} where _A),
+                    Type{Vector{T}} where T) != Union{}
diff --git a/test/syntax.jl b/test/syntax.jl
index 85951185f4a57..479ba13d4c3ca 100644
--- a/test/syntax.jl
+++ b/test/syntax.jl
@@ -1848,6 +1848,30 @@ macro id28992(x) x end
 @test @id28992(2 ^ -2) == 0.25
 @test @id28992(2 .^ -2) == 0.25
 
+# issue #32121
+@test @id28992((a=1, b=2)) === (a=1, b=2)
+a32121 = 8
+b32121 = 9
+@test @id28992((a32121=a32121, b32121=b32121)) === (a32121=8, b32121=9)
+
 # issue #31596
 f31596(x; kw...) = x
 @test f31596((a=1,), b = 1.0) === (a=1,)
+
+# issue #32325
+let
+    struct a32325 end
+    a32325(x) = a32325()
+end
+@test a32325(0) === a32325()
+
+# issue #32499
+x32499 = begin
+    struct S32499
+        function S32499(; x=1)
+            x
+        end
+    end
+    S32499(x=2)
+end
+@test x32499 == 2