diff --git a/NEWS.md b/NEWS.md
index 04b6944791636..d51a58207a6df 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -87,7 +87,6 @@ New library functions
 * `Sys.username()` can be used to return the current user's username ([#51897]).
 * `Sys.isreadable(), Sys.iswritable()` can be used to check if the current user has access permissions
   that permit reading and writing, respectively. ([#53320]).
-* `wrap(Array, m::Union{MemoryRef{T}, Memory{T}}, dims)` is the safe counterpart to `unsafe_wrap` ([#52049]).
 * `GC.logging_enabled()` can be used to test whether GC logging has been enabled via `GC.enable_logging` ([#51647]).
 * `IdSet` is now exported from Base and considered public ([#53262]).
 * `@time` now reports a count of any lock conflicts where a `ReentrantLock` had to wait, plus a new macro
diff --git a/base/abstractarray.jl b/base/abstractarray.jl
index 749ca98a587b0..9042e5f81e462 100644
--- a/base/abstractarray.jl
+++ b/base/abstractarray.jl
@@ -1473,7 +1473,20 @@ function _setindex!(::IndexCartesian, A::AbstractArray, v, I::Vararg{Int,M}) whe
     r
 end
 
-_unsetindex!(A::AbstractArray, i::Integer) = _unsetindex!(A, to_index(i))
+function _unsetindex!(A::AbstractArray, i::Integer...)
+    @_propagate_inbounds_meta
+    _unsetindex!(A, map(to_index, i)...)
+end
+
+function _unsetindex!(A::AbstractArray{T}, i::Int...) where T
+    # this provides a fallback method which is a no-op if the element is already unassigned
+    # such that copying into an uninitialized object generally always will work,
+    # even if the specific custom array type has not implemented `_unsetindex!`
+    @inline
+    @boundscheck checkbounds(A, i...)
+    allocatedinline(T) || @inbounds(!isassigned(A, i...)) || throw(MethodError(_unsetindex!, (A, i...)))
+    return A
+end
 
 """
     parent(A)
diff --git a/base/array.jl b/base/array.jl
index 4b2cd34b2f0db..83ca35714c244 100644
--- a/base/array.jl
+++ b/base/array.jl
@@ -219,7 +219,12 @@ function _unsetindex!(A::Array, i::Int)
     @inbounds _unsetindex!(GenericMemoryRef(A.ref, i))
     return A
 end
-
+function _unsetindex!(A::Array, i::Int...)
+    @inline
+    @boundscheck checkbounds(A, i...)
+    @inbounds _unsetindex!(A, _to_linear_index(A, i...))
+    return A
+end
 
 # TODO: deprecate this (aligned_sizeof and/or elsize and/or sizeof(Some{T}) are more correct)
 elsize(::Type{A}) where {T,A<:Array{T}} = aligned_sizeof(T)
@@ -3062,54 +3067,3 @@ intersect(r::AbstractRange, v::AbstractVector) = intersect(v, r)
         _getindex(v, i)
     end
 end
-
-"""
-    wrap(Array, m::Union{Memory{T}, MemoryRef{T}}, dims)
-
-Create an array of size `dims` using `m` as the underlying memory. This can be thought of as a safe version
-of [`unsafe_wrap`](@ref) utilizing `Memory` or `MemoryRef` instead of raw pointers.
-"""
-function wrap end
-
-# validity checking for _wrap calls, separate from allocation of Array so that it can be more likely to inline into the caller
-function _wrap(ref::MemoryRef{T}, dims::NTuple{N, Int}) where {T, N}
-    mem = ref.mem
-    mem_len = length(mem) + 1 - memoryrefoffset(ref)
-    len = Core.checked_dims(dims...)
-    @boundscheck mem_len >= len || invalid_wrap_err(mem_len, dims, len)
-    if N != 1 && !(ref === GenericMemoryRef(mem) && len === mem_len)
-        mem = ccall(:jl_genericmemory_slice, Memory{T}, (Any, Ptr{Cvoid}, Int), mem, ref.ptr_or_offset, len)
-        ref = MemoryRef(mem)
-    end
-    return ref
-end
-
-@noinline invalid_wrap_err(len, dims, proddims) = throw(DimensionMismatch(
-    "Attempted to wrap a MemoryRef of length $len with an Array of size dims=$dims, which is invalid because prod(dims) = $proddims > $len, so that the array would have more elements than the underlying memory can store."))
-
-@eval @propagate_inbounds function wrap(::Type{Array}, m::MemoryRef{T}, dims::NTuple{N, Integer}) where {T, N}
-    dims = convert(Dims, dims)
-    ref = _wrap(m, dims)
-    $(Expr(:new, :(Array{T, N}), :ref, :dims))
-end
-
-@eval @propagate_inbounds function wrap(::Type{Array}, m::Memory{T}, dims::NTuple{N, Integer}) where {T, N}
-    dims = convert(Dims, dims)
-    ref = _wrap(MemoryRef(m), dims)
-    $(Expr(:new, :(Array{T, N}), :ref, :dims))
-end
-@eval @propagate_inbounds function wrap(::Type{Array}, m::MemoryRef{T}, l::Integer) where {T}
-    dims = (Int(l),)
-    ref = _wrap(m, dims)
-    $(Expr(:new, :(Array{T, 1}), :ref, :dims))
-end
-@eval @propagate_inbounds function wrap(::Type{Array}, m::Memory{T}, l::Integer) where {T}
-    dims = (Int(l),)
-    ref = _wrap(MemoryRef(m), (l,))
-    $(Expr(:new, :(Array{T, 1}), :ref, :dims))
-end
-@eval @propagate_inbounds function wrap(::Type{Array}, m::Memory{T}) where {T}
-    ref = MemoryRef(m)
-    dims = (length(m),)
-    $(Expr(:new, :(Array{T, 1}), :ref, :dims))
-end
diff --git a/base/broadcast.jl b/base/broadcast.jl
index 90453ccf19aa3..91dbff6dc6ea3 100644
--- a/base/broadcast.jl
+++ b/base/broadcast.jl
@@ -517,8 +517,8 @@ function _bcs(shape::Tuple, newshape::Tuple)
     return (_bcs1(shape[1], newshape[1]), _bcs(tail(shape), tail(newshape))...)
 end
 # _bcs1 handles the logic for a single dimension
-_bcs1(a::Integer, b::Integer) = a == 1 ? b : (b == 1 ? a : (a == b ? a : throw(DimensionMismatch("arrays could not be broadcast to a common size; got a dimension with lengths $a and $b"))))
-_bcs1(a::Integer, b) = a == 1 ? b : (first(b) == 1 && last(b) == a ? b : throw(DimensionMismatch("arrays could not be broadcast to a common size; got a dimension with lengths $a and $(length(b))")))
+_bcs1(a::Integer, b::Integer) = a == 1 ? b : (b == 1 ? a : (a == b ? a : throw(DimensionMismatch(LazyString("arrays could not be broadcast to a common size; got a dimension with lengths ", a, " and ", b)))))
+_bcs1(a::Integer, b) = a == 1 ? b : (first(b) == 1 && last(b) == a ? b : throw(DimensionMismatch(LazyString("arrays could not be broadcast to a common size; got a dimension with lengths ", a, " and ", length(b)))))
 _bcs1(a, b::Integer) = _bcs1(b, a)
 _bcs1(a, b) = _bcsm(b, a) ? axistype(b, a) : _bcsm(a, b) ? axistype(a, b) : throw(DimensionMismatch(LazyString("arrays could not be broadcast to a common size: a has axes ", a, " and b has axes ", b)))
 # _bcsm tests whether the second index is consistent with the first
@@ -1057,7 +1057,7 @@ end
 
 
 @noinline throwdm(axdest, axsrc) =
-    throw(DimensionMismatch("destination axes $axdest are not compatible with source axes $axsrc"))
+    throw(DimensionMismatch(LazyString("destination axes ", axdest, " are not compatible with source axes ", axsrc)))
 
 function restart_copyto_nonleaf!(newdest, dest, bc, val, I, iter, state, count)
     # Function barrier that makes the copying to newdest type stable
diff --git a/base/exports.jl b/base/exports.jl
index 88adfb9bfba76..152831dc6043a 100644
--- a/base/exports.jl
+++ b/base/exports.jl
@@ -460,7 +460,6 @@ export
     vcat,
     vec,
     view,
-    wrap,
     zeros,
 
 # search, find, match and related functions
diff --git a/base/genericmemory.jl b/base/genericmemory.jl
index b5f519a0f854d..3463be456ea59 100644
--- a/base/genericmemory.jl
+++ b/base/genericmemory.jl
@@ -288,3 +288,27 @@ function indcopy(sz::Dims, I::GenericMemory)
     src = eltype(I)[I[i][_findin(I[i], i < n ? (1:sz[i]) : (1:s))] for i = 1:n]
     dst, src
 end
+
+# Wrapping a memory region in an Array
+@eval begin # @eval for the Array construction. Block for the docstring.
+    function reshape(m::GenericMemory{M, T}, dims::Vararg{Int, N}) where {M, T, N}
+        len = Core.checked_dims(dims...)
+        length(m) == len || throw(DimensionMismatch("parent has $(length(m)) elements, which is incompatible with size $(dims)"))
+        ref = MemoryRef(m)
+        $(Expr(:new, :(Array{T, N}), :ref, :dims))
+    end
+
+    """
+        view(m::GenericMemory{M, T}, inds::Union{UnitRange, OneTo})
+
+    Create a vector `v::Vector{T}` backed by the specified indices of `m`. It is only safe to
+    resize `v` if `m` is subseqently not used.
+    """
+    function view(m::GenericMemory{M, T}, inds::Union{UnitRange, OneTo}) where {M, T}
+        isempty(inds) && return T[] # needed to allow view(Memory{T}(undef, 0), 2:1)
+        @boundscheck checkbounds(m, inds)
+        ref = MemoryRef(m, first(inds)) # @inbounds would be safe here but does not help performance.
+        dims = (Int(length(inds)),)
+        $(Expr(:new, :(Array{T, 1}), :ref, :dims))
+    end
+end
diff --git a/base/gmp.jl b/base/gmp.jl
index beeec879ed487..a7caa8dfcdafd 100644
--- a/base/gmp.jl
+++ b/base/gmp.jl
@@ -754,7 +754,7 @@ function string(n::BigInt; base::Integer = 10, pad::Integer = 1)
     iszero(n) && pad < 1 && return ""
     nd1 = ndigits(n, base=base)
     nd  = max(nd1, pad)
-    sv  = Base.StringVector(nd + isneg(n))
+    sv  = Base.StringMemory(nd + isneg(n))
     GC.@preserve sv MPZ.get_str!(pointer(sv) + nd - nd1, base, n)
     @inbounds for i = (1:nd-nd1) .+ isneg(n)
         sv[i] = '0' % UInt8
diff --git a/base/intfuncs.jl b/base/intfuncs.jl
index 916cd28a32c6f..3f1c7f4367b4f 100644
--- a/base/intfuncs.jl
+++ b/base/intfuncs.jl
@@ -742,7 +742,7 @@ ndigits(x::Integer; base::Integer=10, pad::Integer=1) = max(pad, ndigits0z(x, ba
 function bin(x::Unsigned, pad::Int, neg::Bool)
     m = top_set_bit(x)
     n = neg + max(pad, m)
-    a = StringVector(n)
+    a = StringMemory(n)
     # for i in 0x0:UInt(n-1) # automatic vectorization produces redundant codes
     #     @inbounds a[n - i] = 0x30 + (((x >> i) % UInt8)::UInt8 & 0x1)
     # end
@@ -769,7 +769,7 @@ end
 function oct(x::Unsigned, pad::Int, neg::Bool)
     m = div(top_set_bit(x) + 2, 3)
     n = neg + max(pad, m)
-    a = StringVector(n)
+    a = StringMemory(n)
     i = n
     while i > neg
         @inbounds a[i] = 0x30 + ((x % UInt8)::UInt8 & 0x7)
@@ -844,7 +844,7 @@ end
 
 function dec(x::Unsigned, pad::Int, neg::Bool)
     n = neg + ndigits(x, pad=pad)
-    a = StringVector(n)
+    a = StringMemory(n)
     append_c_digits_fast(n, x, a, 1)
     neg && (@inbounds a[1] = 0x2d) # UInt8('-')
     String(a)
@@ -853,7 +853,7 @@ end
 function hex(x::Unsigned, pad::Int, neg::Bool)
     m = 2 * sizeof(x) - (leading_zeros(x) >> 2)
     n = neg + max(pad, m)
-    a = StringVector(n)
+    a = StringMemory(n)
     i = n
     while i >= 2
         b = (x % UInt8)::UInt8
@@ -880,7 +880,7 @@ function _base(base::Integer, x::Integer, pad::Int, neg::Bool)
     b = (base % Int)::Int
     digits = abs(b) <= 36 ? base36digits : base62digits
     n = neg + ndigits(x, base=b, pad=pad)
-    a = StringVector(n)
+    a = StringMemory(n)
     i = n
     @inbounds while i > neg
         if b > 0
@@ -956,7 +956,7 @@ julia> bitstring(2.2)
 function bitstring(x::T) where {T}
     isprimitivetype(T) || throw(ArgumentError("$T not a primitive type"))
     sz = sizeof(T) * 8
-    str = StringVector(sz)
+    str = StringMemory(sz)
     i = sz
     @inbounds while i >= 4
         b = UInt32(sizeof(T) == 1 ? bitcast(UInt8, x) : trunc_int(UInt8, x))
diff --git a/base/iobuffer.jl b/base/iobuffer.jl
index dadb13e1f1e6a..109eaa96a3de4 100644
--- a/base/iobuffer.jl
+++ b/base/iobuffer.jl
@@ -42,7 +42,7 @@ end
 
 # allocate Vector{UInt8}s for IOBuffer storage that can efficiently become Strings
 StringMemory(n::Integer) = unsafe_wrap(Memory{UInt8}, _string_n(n))
-StringVector(n::Integer) = wrap(Array, StringMemory(n))
+StringVector(n::Integer) = view(StringMemory(n), 1:n)::Vector{UInt8}
 
 # IOBuffers behave like Files. They are typically readable and writable. They are seekable. (They can be appendable).
 
@@ -456,7 +456,7 @@ function take!(io::IOBuffer)
         if nbytes == 0 || io.reinit
             data = StringVector(0)
         elseif io.writable
-            data = wrap(Array, MemoryRef(io.data, io.offset + 1), nbytes)
+            data = view(io.data, io.offset+1:nbytes+io.offset)
         else
             data = copyto!(StringVector(io.size), 1, io.data, io.offset + 1, nbytes)
         end
@@ -465,7 +465,7 @@ function take!(io::IOBuffer)
         if nbytes == 0
             data = StringVector(0)
         elseif io.writable
-            data = wrap(Array, MemoryRef(io.data, io.ptr), nbytes)
+            data = view(io.data, io.ptr:io.ptr+nbytes-1)
         else
             data = read!(io, data)
         end
@@ -491,11 +491,7 @@ state.  This should only be used internally for performance-critical
 It might save an allocation compared to `take!` (if the compiler elides the
 Array allocation), as well as omits some checks.
 """
-_unsafe_take!(io::IOBuffer) =
-    wrap(Array, io.size == io.offset ?
-        MemoryRef(Memory{UInt8}()) :
-        MemoryRef(io.data, io.offset + 1),
-        io.size - io.offset)
+_unsafe_take!(io::IOBuffer) = view(io.data, io.offset+1:io.size)
 
 function write(to::IO, from::GenericIOBuffer)
     written::Int = bytesavailable(from)
diff --git a/base/loading.jl b/base/loading.jl
index c3c2647adbe4e..6c4541296f269 100644
--- a/base/loading.jl
+++ b/base/loading.jl
@@ -1643,25 +1643,13 @@ end
 # should sync with the types of arguments of `stale_cachefile`
 const StaleCacheKey = Tuple{Base.PkgId, UInt128, String, String}
 
-"""
-    Base.isprecompiled(pkg::PkgId; ignore_loaded::Bool=false)
-
-Returns whether a given PkgId within the active project is precompiled.
-
-By default this check observes the same approach that code loading takes
-with respect to when different versions of dependencies are currently loaded
-to that which is expected. To ignore loaded modules and answer as if in a
-fresh julia session specify `ignore_loaded=true`.
-
-!!! compat "Julia 1.10"
-    This function requires at least Julia 1.10.
-"""
-function isprecompiled(pkg::PkgId;
+function compilecache_path(pkg::PkgId;
         ignore_loaded::Bool=false,
         stale_cache::Dict{StaleCacheKey,Bool}=Dict{StaleCacheKey, Bool}(),
         cachepaths::Vector{String}=Base.find_all_in_cache_path(pkg),
         sourcepath::Union{String,Nothing}=Base.locate_package(pkg),
         flags::CacheFlags=CacheFlags())
+    path = nothing
     isnothing(sourcepath) && error("Cannot locate source for $(repr("text/plain", pkg))")
     for path_to_try in cachepaths
         staledeps = stale_cachefile(sourcepath, path_to_try, ignore_loaded = true, requested_flags=flags)
@@ -1693,10 +1681,64 @@ function isprecompiled(pkg::PkgId;
             # file might be read-only and then we fail to update timestamp, which is fine
             ex isa IOError || rethrow()
         end
-        return true
+        path = path_to_try
+        break
         @label check_next_path
     end
-    return false
+    return path
+end
+
+"""
+    Base.isprecompiled(pkg::PkgId; ignore_loaded::Bool=false)
+
+Returns whether a given PkgId within the active project is precompiled.
+
+By default this check observes the same approach that code loading takes
+with respect to when different versions of dependencies are currently loaded
+to that which is expected. To ignore loaded modules and answer as if in a
+fresh julia session specify `ignore_loaded=true`.
+
+!!! compat "Julia 1.10"
+    This function requires at least Julia 1.10.
+"""
+function isprecompiled(pkg::PkgId;
+        ignore_loaded::Bool=false,
+        stale_cache::Dict{StaleCacheKey,Bool}=Dict{StaleCacheKey, Bool}(),
+        cachepaths::Vector{String}=Base.find_all_in_cache_path(pkg),
+        sourcepath::Union{String,Nothing}=Base.locate_package(pkg),
+        flags::CacheFlags=CacheFlags())
+    path = compilecache_path(pkg; ignore_loaded, stale_cache, cachepaths, sourcepath, flags)
+    return !isnothing(path)
+end
+
+"""
+    Base.isrelocatable(pkg::PkgId)
+
+Returns whether a given PkgId within the active project is precompiled and the
+associated cache is relocatable.
+
+!!! compat "Julia 1.11"
+    This function requires at least Julia 1.11.
+"""
+function isrelocatable(pkg::PkgId)
+    path = compilecache_path(pkg)
+    isnothing(path) && return false
+    io = open(path, "r")
+    try
+        iszero(isvalid_cache_header(io)) && throw(ArgumentError("Invalid header in cache file $cachefile."))
+        _, (includes, includes_srcfiles, _), _... = _parse_cache_header(io, path)
+        for inc in includes
+            !startswith(inc.filename, "@depot") && return false
+            if inc ∉ includes_srcfiles
+                # its an include_dependency
+                track_content = inc.mtime == -1.0
+                track_content || return false
+            end
+        end
+    finally
+        close(io)
+    end
+    return true
 end
 
 # search for a precompile cache file to load, after some various checks
@@ -3025,7 +3067,7 @@ function resolve_depot(inc::AbstractString)
 end
 
 
-function parse_cache_header(f::IO, cachefile::AbstractString)
+function _parse_cache_header(f::IO, cachefile::AbstractString)
     flags = read(f, UInt8)
     modules = Vector{Pair{PkgId, UInt64}}()
     while true
@@ -3109,9 +3151,16 @@ function parse_cache_header(f::IO, cachefile::AbstractString)
 
     srcfiles = srctext_files(f, srctextpos, includes)
 
+    return modules, (includes, srcfiles, requires), required_modules, srctextpos, prefs, prefs_hash, clone_targets, flags
+end
+
+function parse_cache_header(f::IO, cachefile::AbstractString)
+    modules, (includes, srcfiles, requires), required_modules,
+        srctextpos, prefs, prefs_hash, clone_targets, flags = _parse_cache_header(f, cachefile)
+
     includes_srcfiles = CacheHeaderIncludes[]
     includes_depfiles = CacheHeaderIncludes[]
-    for (i, inc) in enumerate(includes)
+    for inc in includes
         if inc.filename ∈ srcfiles
             push!(includes_srcfiles, inc)
         else
@@ -3119,23 +3168,63 @@ function parse_cache_header(f::IO, cachefile::AbstractString)
         end
     end
 
-    # determine depot for @depot replacement for include() files and include_dependency() files separately
-    srcfiles_depot = resolve_depot(first(srcfiles))
-    if srcfiles_depot === :no_depot_found
-        @debug("Unable to resolve @depot tag include() files from cache file $cachefile", srcfiles)
-    elseif srcfiles_depot === :not_relocatable
-        @debug("include() files from $cachefile are not relocatable", srcfiles)
-    else
+
+    # The @depot resolution logic for include() files:
+    # 1. If the cache is not relocatable because of an absolute path,
+    #    we ignore that path for the depot search.
+    #    Recompilation will be triggered by stale_cachefile() if that absolute path does not exist.
+    # 2. If we can't find a depot for a relocatable path,
+    #    we still replace it with the depot we found from other files.
+    #    Recompilation will be triggered by stale_cachefile() because the resolved path does not exist.
+    # 3. We require that relocatable paths all resolve to the same depot.
+    # 4. We explicitly check that all relocatable paths resolve to the same depot. This has two reasons:
+    #    - We want to scan all source files in order to provide logs for 1. and 2. above.
+    #    - It is possible that a depot might be missing source files.
+    #      Assume that we have two depots on DEPOT_PATH, depot_complete and depot_incomplete.
+    #      If DEPOT_PATH=["depot_complete","depot_incomplete"] then no recompilation shall happen,
+    #      because depot_complete will be picked.
+    #      If DEPOT_PATH=["depot_incomplete","depot_complete"] we trigger recompilation and
+    #      hopefully a meaningful error about missing files is thrown.
+    #      If we were to just select the first depot we find, then whether recompilation happens would
+    #      depend on whether the first relocatable file resolves to depot_complete or depot_incomplete.
+    srcdepot = nothing
+    any_not_relocatable = false
+    any_no_depot_found = false
+    multiple_depots_found = false
+    for src in srcfiles
+        depot = resolve_depot(src)
+        if depot === :not_relocatable
+            any_not_relocatable = true
+        elseif depot === :no_depot_found
+            any_no_depot_found = true
+        elseif isnothing(srcdepot)
+            srcdepot = depot
+        elseif depot != srcdepot
+            multiple_depots_found = true
+        end
+    end
+    if any_no_depot_found
+        @debug("Unable to resolve @depot tag for at least one include() file from cache file $cachefile", srcfiles, _group=:relocatable)
+    end
+    if any_not_relocatable
+        @debug("At least one include() file from $cachefile is not relocatable", srcfiles, _group=:relocatable)
+    end
+    if multiple_depots_found
+        @debug("Some include() files from $cachefile are distributed over multiple depots", srcfiles, _group=:relocatable)
+    elseif !isnothing(srcdepot)
         for inc in includes_srcfiles
-            inc.filename = restore_depot_path(inc.filename, srcfiles_depot)
+            inc.filename = restore_depot_path(inc.filename, srcdepot)
         end
     end
+
+    # unlike include() files, we allow each relocatable include_dependency() file to resolve
+    # to a separate depot, #52161
     for inc in includes_depfiles
         depot = resolve_depot(inc.filename)
         if depot === :no_depot_found
-            @debug("Unable to resolve @depot tag for include_dependency() file $(inc.filename) from cache file $cachefile", srcfiles)
+            @debug("Unable to resolve @depot tag for include_dependency() file $(inc.filename) from cache file $cachefile", _group=:relocatable)
         elseif depot === :not_relocatable
-            @debug("include_dependency() file $(inc.filename) from $cachefile is not relocatable", srcfiles)
+            @debug("include_dependency() file $(inc.filename) from $cachefile is not relocatable", _group=:relocatable)
         else
             inc.filename = restore_depot_path(inc.filename, depot)
         end
diff --git a/base/multidimensional.jl b/base/multidimensional.jl
index 146f8c160e8e9..fe29e5c1d8e5f 100644
--- a/base/multidimensional.jl
+++ b/base/multidimensional.jl
@@ -1610,6 +1610,12 @@ end
     end
 end
 
+# _unsetindex
+@propagate_inbounds function Base._unsetindex!(A::AbstractArray, i::CartesianIndex)
+    Base._unsetindex!(A, to_indices(A, (i,))...)
+    return A
+end
+
 ## permutedims
 
 ## Permute array dims ##
diff --git a/base/precompilation.jl b/base/precompilation.jl
index 80648299b13fd..375fed35ae646 100644
--- a/base/precompilation.jl
+++ b/base/precompilation.jl
@@ -171,7 +171,7 @@ function ExplicitEnv(envpath::String=Base.active_project())
     sizehint!(weakdeps_expanded, length(deps))
     sizehint!(extensions_expanded, length(deps))
 
-    if proj_name !== nothing
+    if proj_name !== nothing && proj_uuid !== nothing
         deps_expanded[proj_uuid] = filter!(!=(proj_uuid), collect(values(project_deps)))
         extensions_expanded[proj_uuid] = project_extensions
         path = get(project_d, "path", nothing)
@@ -331,6 +331,8 @@ struct PkgPrecompileError <: Exception
     msg::String
 end
 Base.showerror(io::IO, err::PkgPrecompileError) = print(io, err.msg)
+Base.showerror(io::IO, err::PkgPrecompileError, bt; kw...) = Base.showerror(io, err) # hide stacktrace
+
 # This needs a show method to make `julia> err` show nicely
 Base.show(io::IO, err::PkgPrecompileError) = print(io, "PkgPrecompileError: ", err.msg)
 
@@ -551,11 +553,14 @@ function precompilepkgs(pkgs::Vector{String}=String[];
     else
         target = "project"
     end
-    nconfig = length(configs)
-    if nconfig > 1
-        target *= " for $nconfig compilation configurations..."
-    else
+    nconfigs = length(configs)
+    if nconfigs == 1
+        if !isempty(only(configs)[1])
+            target *= " for configuration $(join(only(configs)[1], " "))"
+        end
         target *= "..."
+    else
+        target *= " for $nconfigs compilation configurations..."
     end
     @debug "precompile: packages filtered"
 
@@ -677,7 +682,7 @@ function precompilepkgs(pkgs::Vector{String}=String[];
                             loaded = warn_loaded && haskey(Base.loaded_modules, dep)
                             _name = haskey(exts, dep) ? string(exts[dep], " → ", dep.name) : dep.name
                             name = dep in direct_deps ? _name : string(color_string(_name, :light_black))
-                            if !isempty(config[1])
+                            if nconfigs > 1 && !isempty(config[1])
                                 config_str = "$(join(config[1], " "))"
                                 name *= color_string(" $(config_str)", :light_black)
                             end
@@ -769,7 +774,7 @@ function precompilepkgs(pkgs::Vector{String}=String[];
 
                         _name = haskey(exts, pkg) ? string(exts[pkg], " → ", pkg.name) : pkg.name
                         name = is_direct_dep ? _name : string(color_string(_name, :light_black))
-                        if !isempty(flags)
+                        if nconfigs > 1 && !isempty(flags)
                             config_str = "$(join(flags, " "))"
                             name *= color_string(" $(config_str)", :light_black)
                         end
@@ -809,7 +814,7 @@ function precompilepkgs(pkgs::Vector{String}=String[];
                             close(std_pipe.in) # close pipe to end the std output monitor
                             wait(t_monitor)
                             if err isa ErrorException || (err isa ArgumentError && startswith(err.msg, "Invalid header in cache file"))
-                                failed_deps[pkg_config] = (strict || is_direct_dep) ? string(sprint(showerror, err), "\n", strip(get(std_outputs, pkg, ""))) : ""
+                                failed_deps[pkg_config] = (strict || is_direct_dep) ? string(sprint(showerror, err), "\n", strip(get(std_outputs, pkg_config, ""))) : ""
                                 delete!(std_outputs, pkg_config) # so it's not shown as warnings, given error report
                                 !fancyprint && lock(print_lock) do
                                     println(io, " "^9, color_string("  ✗ ", Base.error_color()), name)
@@ -932,7 +937,7 @@ function precompilepkgs(pkgs::Vector{String}=String[];
                 end
             else
                 println(io)
-                error(err_msg)
+                throw(PkgPrecompileError(err_msg))
             end
         end
     end
diff --git a/base/strings/string.jl b/base/strings/string.jl
index b2afce897a937..d091baeb6c663 100644
--- a/base/strings/string.jl
+++ b/base/strings/string.jl
@@ -117,7 +117,10 @@ String(s::AbstractString) = print_to_string(s)
 @assume_effects :total String(s::Symbol) = unsafe_string(unsafe_convert(Ptr{UInt8}, s))
 
 unsafe_wrap(::Type{Memory{UInt8}}, s::String) = ccall(:jl_string_to_genericmemory, Ref{Memory{UInt8}}, (Any,), s)
-unsafe_wrap(::Type{Vector{UInt8}}, s::String) = wrap(Array, unsafe_wrap(Memory{UInt8}, s))
+function unsafe_wrap(::Type{Vector{UInt8}}, s::String)
+    mem = unsafe_wrap(Memory{UInt8}, s)
+    view(mem, eachindex(mem))
+end
 
 Vector{UInt8}(s::CodeUnits{UInt8,String}) = copyto!(Vector{UInt8}(undef, length(s)), s)
 Vector{UInt8}(s::String) = Vector{UInt8}(codeunits(s))
diff --git a/base/strings/util.jl b/base/strings/util.jl
index 219b329d7924d..4b701001a8676 100644
--- a/base/strings/util.jl
+++ b/base/strings/util.jl
@@ -1061,7 +1061,7 @@ function bytes2hex end
 
 function bytes2hex(itr)
     eltype(itr) === UInt8 || throw(ArgumentError("eltype of iterator not UInt8"))
-    b = Base.StringVector(2*length(itr))
+    b = Base.StringMemory(2*length(itr))
     @inbounds for (i, x) in enumerate(itr)
         b[2i - 1] = hex_chars[1 + x >> 4]
         b[2i    ] = hex_chars[1 + x & 0xf]
diff --git a/base/subarray.jl b/base/subarray.jl
index 396f7c52bd77a..2b8545c2cc226 100644
--- a/base/subarray.jl
+++ b/base/subarray.jl
@@ -410,6 +410,25 @@ function isassigned(V::FastSubArray{<:Any, 1}, i::Int)
     r
 end
 
+function _unsetindex!(V::FastSubArray, i::Int)
+    @inline
+    @boundscheck checkbounds(V, i)
+    @inbounds _unsetindex!(V.parent, _reindexlinear(V, i))
+    return V
+end
+function _unsetindex!(V::FastSubArray{<:Any,1}, i::Int)
+    @inline
+    @boundscheck checkbounds(V, i)
+    @inbounds _unsetindex!(V.parent, _reindexlinear(V, i))
+    return V
+end
+function _unsetindex!(V::SubArray{T,N}, i::Vararg{Int,N}) where {T,N}
+    @inline
+    @boundscheck checkbounds(V, i...)
+    @inbounds _unsetindex!(V.parent, reindex(V.indices, i)...)
+    return V
+end
+
 IndexStyle(::Type{<:FastSubArray}) = IndexLinear()
 IndexStyle(::Type{<:SubArray}) = IndexCartesian()
 
diff --git a/base/uuid.jl b/base/uuid.jl
index 1ed0b81b3f178..9b2da3c6409db 100644
--- a/base/uuid.jl
+++ b/base/uuid.jl
@@ -90,7 +90,7 @@ let groupings = [36:-1:25; 23:-1:20; 18:-1:15; 13:-1:10; 8:-1:1]
     global string
     function string(u::UUID)
         u = u.value
-        a = Base.StringVector(36)
+        a = Base.StringMemory(36)
         for i in groupings
             @inbounds a[i] = hex_chars[1 + u & 0xf]
             u >>= 4
diff --git a/deps/checksums/libuv b/deps/checksums/libuv
index 7ac93952b8b34..41a9a5bdf9722 100644
--- a/deps/checksums/libuv
+++ b/deps/checksums/libuv
@@ -1,34 +1,34 @@
-LibUV.v2.0.1+15.aarch64-apple-darwin.tar.gz/md5/f12ee08b8d5721bd88b651ac573c59ed
-LibUV.v2.0.1+15.aarch64-apple-darwin.tar.gz/sha512/b3c53e04624d9c60e664db2eaaf3add696f95c52e55db0c577547f7bf7e045ce30cffa0e38c3451f483dcdb7ddcac1b7f43b694dfadb37282773ce416af1030a
-LibUV.v2.0.1+15.aarch64-linux-gnu.tar.gz/md5/8cb9f4d6c6a4013fa9ed9ae120058275
-LibUV.v2.0.1+15.aarch64-linux-gnu.tar.gz/sha512/d4213ee47ebdcab4cc4719478608ffa461a5543a16656c2881587364c8ed1b39a2f418d5c3c6a04d7e6dd3df349f0afa72cd1df0e06db6146512356b37637024
-LibUV.v2.0.1+15.aarch64-linux-musl.tar.gz/md5/e23a0d7162fc3f09f0ea92d24cba3f4d
-LibUV.v2.0.1+15.aarch64-linux-musl.tar.gz/sha512/f4a13eee72575092ab673777a53d43ce999a7a8bf847daa0a86b39bbfd3f6c1575f105a0bb629766268921ff94f10d354a0e53d32623f6ad35fca44e7bac25f8
-LibUV.v2.0.1+15.armv6l-linux-gnueabihf.tar.gz/md5/70ed0616cd3737a357b7571ab648d239
-LibUV.v2.0.1+15.armv6l-linux-gnueabihf.tar.gz/sha512/25a4b8a90b7bb62e31c1c2bb1d7e137050de26f311daa9f77be932ab3d9a2b92c82ce82ed37cc74a2b1cd5a60bd0dc412e92d31013d36ad35af2d4f376fbc0b0
-LibUV.v2.0.1+15.armv6l-linux-musleabihf.tar.gz/md5/e4320c51c8904a59c105f7b63d086c79
-LibUV.v2.0.1+15.armv6l-linux-musleabihf.tar.gz/sha512/bbc39d800277a66298c56849c1131a6f1958a2c8b2465b59527965a1bd3f36a4c87c1d7ad4be59ec0f4ca8f94ec1804a619eb963d956b77e645e0e00effc6613
-LibUV.v2.0.1+15.armv7l-linux-gnueabihf.tar.gz/md5/d5436552dc177fc3fd0cf4f575cc03b4
-LibUV.v2.0.1+15.armv7l-linux-gnueabihf.tar.gz/sha512/8d3722290151ecf65f4e3fe3440828492a7b115810b87c8711c5592f4dea69727e516228a5a1bdac430c74b288f12de390daf0a9408274aa27cdd69efc81cfee
-LibUV.v2.0.1+15.armv7l-linux-musleabihf.tar.gz/md5/67e1ba03ddf2d2bdd79fef25a5976350
-LibUV.v2.0.1+15.armv7l-linux-musleabihf.tar.gz/sha512/535565657b5714da0db5c622b65b261a77f21f407b1166eee99f35ba3bb9c6fab4c7d1f3db70528767cef7c66c856c5101b01423be05efb9219ec4c76df0be6a
-LibUV.v2.0.1+15.i686-linux-gnu.tar.gz/md5/ba1432ecd75e6a43ff197d51ba76446c
-LibUV.v2.0.1+15.i686-linux-gnu.tar.gz/sha512/dc8940284d4ba05098037fcf4b3bada199878794ef34ad09d8992ef58e4c829b00a3fcca29c4f65b49edcab4274092232ff5d7619b3535333125043f89503cfc
-LibUV.v2.0.1+15.i686-linux-musl.tar.gz/md5/237080cf5d1286a3d2f35d134a285d28
-LibUV.v2.0.1+15.i686-linux-musl.tar.gz/sha512/834f16a16cf6b765dfd094037c8a45ccdedc2eb9e45f527c6721eb0f60f4e56dc4f9b90a2a35e3ed10da4a937d8555e97034e0a29d733cac5352061ebe286799
-LibUV.v2.0.1+15.i686-w64-mingw32.tar.gz/md5/8a5261a6ce4200d272b5eda4fe9ecb31
-LibUV.v2.0.1+15.i686-w64-mingw32.tar.gz/sha512/b372b9368a9ac92775a8d6ee39b492905dc5f58f16d7edf792e0c2ffbd4507ede79139a24fe852dfa26068d0f076a4abf3c3b868a8a057b23fdbad80999d315f
-LibUV.v2.0.1+15.powerpc64le-linux-gnu.tar.gz/md5/53db7b763af204477ce8f0bfae0ce15c
-LibUV.v2.0.1+15.powerpc64le-linux-gnu.tar.gz/sha512/bbfe2518d4dc84fe73b7d3f3bcaf5aeef0db0d284c0e205e3e3670b8ce6f3ea593a0e52d125fd9a79cd098dba0d35f151cb46469fa25dfeef62ebcc966f94d4f
-LibUV.v2.0.1+15.x86_64-apple-darwin.tar.gz/md5/b4699192c098564edc5589e90c47324e
-LibUV.v2.0.1+15.x86_64-apple-darwin.tar.gz/sha512/2505e4060712143d3213747d4276c0b99dec78579d2ab0b71c5d7edf15ae80e0178138a11470c976d97de14e44b153dcb00c08c864523d7ee0ead8e48cf15d14
-LibUV.v2.0.1+15.x86_64-linux-gnu.tar.gz/md5/f5515c50106a0748b9a1986c912a00f3
-LibUV.v2.0.1+15.x86_64-linux-gnu.tar.gz/sha512/5822396039e14a5d919f2612559a8d62a925c4319e66eb05ed20faed754318762f5653851684701cd4ddb1edf10bfe25d252c3d9cd84228e498e825ba61146b1
-LibUV.v2.0.1+15.x86_64-linux-musl.tar.gz/md5/1962e6f21080e874d2ca0275c5b569b2
-LibUV.v2.0.1+15.x86_64-linux-musl.tar.gz/sha512/4702e13633d77a6c0aeb1e7cd252471a779177e20c68485130f420cc4878c8f7de7f0f51730008ba9dc0f275875a5947629d39aff200691e26f31d42e388d53d
-LibUV.v2.0.1+15.x86_64-unknown-freebsd.tar.gz/md5/928a789c3cd3b4cefcc1cf13f5f179ac
-LibUV.v2.0.1+15.x86_64-unknown-freebsd.tar.gz/sha512/ee58667b19fdf7ec0218b4645b3f5bed2e9fc01cc29eab8473ee02aaa044f94a48eb220c6427200aaf56eacf52d0f72156712d17017cfecbc25d3c1b71a4bd2f
-LibUV.v2.0.1+15.x86_64-w64-mingw32.tar.gz/md5/d3b84729ee9d5a6e6a1e29357e25cced
-LibUV.v2.0.1+15.x86_64-w64-mingw32.tar.gz/sha512/43ca5999d8e8ff820722b1a548bd4e277e95c739c3363ed6159d080dd06842316f5370e8e4f4a886bf76010f4aed2bbf01f6091845b0e84b75f709277c561649
-libuv-afa1c67fa496eb49ade1e520f76fd018a1409eaa.tar.gz/md5/3863ccd5a51f85cf76679070c99be6cd
-libuv-afa1c67fa496eb49ade1e520f76fd018a1409eaa.tar.gz/sha512/bf4c705e05e730139b62de799331653eea2767898d654b8890ca2623db3adb9a1efcfcfab38af22e8ac44c67a9c5c018f1f7847a3703bee5f05657169a67d817
+LibUV.v2.0.1+16.aarch64-apple-darwin.tar.gz/md5/132266a501144f34eb9b8d5199db43c0
+LibUV.v2.0.1+16.aarch64-apple-darwin.tar.gz/sha512/e466ba8a2fe916f0e2dccb1d1075a6a20fcc5d5068d2375c940353a63522332fa8f665461adbb47ad4d30dabaea011b8e72a603601da29a071d98c7d7d130f46
+LibUV.v2.0.1+16.aarch64-linux-gnu.tar.gz/md5/1ae3018d9ab8bb293dbf6277c2c209cc
+LibUV.v2.0.1+16.aarch64-linux-gnu.tar.gz/sha512/6e56876cdf0fdad1aade6435edf980b286438ee9fa695fa4e262b47f7ada6ff69535c59d216daee3eb1d061a90c2c16fd70d21438776c54addda93cf275ef1be
+LibUV.v2.0.1+16.aarch64-linux-musl.tar.gz/md5/08243e727c7e957f5972a200b5d89113
+LibUV.v2.0.1+16.aarch64-linux-musl.tar.gz/sha512/4a684f248704b16b882d66ed7af60e2217a0b98f476bfdd1cb545d3e2adb17f6a410bf09e270c1e2623e550b36639c9282a562ab415850dfea98736ec03fd000
+LibUV.v2.0.1+16.armv6l-linux-gnueabihf.tar.gz/md5/c4dfccf5a899782715cbb0ca0197938c
+LibUV.v2.0.1+16.armv6l-linux-gnueabihf.tar.gz/sha512/ecdcd655865a532187e4e98cb21ca68e62303813cad585de83382aa226d965213f24fe7a684e1189fad11b0e5f2f4b318c122f557a6117f61bb2948b51e16a76
+LibUV.v2.0.1+16.armv6l-linux-musleabihf.tar.gz/md5/5382dae963f3003aefdb119377a45e82
+LibUV.v2.0.1+16.armv6l-linux-musleabihf.tar.gz/sha512/f901c2965e8f9ca52900180c32cdb70d8adc13f12f076c1b109d57b749cac1ecaac3c72e22531e6fcb79c8f2c7cf952ff563779d3764b015b73db079f2b171cb
+LibUV.v2.0.1+16.armv7l-linux-gnueabihf.tar.gz/md5/9c4cd82249c03ebeac670e2c7c8c1078
+LibUV.v2.0.1+16.armv7l-linux-gnueabihf.tar.gz/sha512/ee4b7f866e3f63df303d00d48d36680c490570979bb7174c12cfcf9efaf48ea7ae90aa05b41da8ab686de93c910c5a761f31da22845ad48fd980e9c16437cbfb
+LibUV.v2.0.1+16.armv7l-linux-musleabihf.tar.gz/md5/5255d7e320ef37eb63d0e85c4b86d20d
+LibUV.v2.0.1+16.armv7l-linux-musleabihf.tar.gz/sha512/5bcd3d22b1e2398879e654bb550fd093891775c64cb48bd179c4f9ff8dcbff23eda91a66ea14852ef5945d5c114732957075e3b3fded4cbd3cca559fead842db
+LibUV.v2.0.1+16.i686-linux-gnu.tar.gz/md5/7f0fc52beb13dad773c6ab54deee7a62
+LibUV.v2.0.1+16.i686-linux-gnu.tar.gz/sha512/cb1736eab4fa1be89018b3c77c3551a99d0fa761ad2f1947587c215d87d963d43198ce87574b6eb9d1fb8a93abf1ae89e74fb8a3f3fb9c4fd08a49e04b4335f4
+LibUV.v2.0.1+16.i686-linux-musl.tar.gz/md5/ed22ccd7eaa09ed9c71afc0c6affa423
+LibUV.v2.0.1+16.i686-linux-musl.tar.gz/sha512/7f3ff061c3d7d0c3c0c0be3e4052aeed39f35e1ba0b92f3ee3d9f266f26d064acc153c08054a22d090167f00fef3c27ec54e836de35f348e4849baab301f7fa4
+LibUV.v2.0.1+16.i686-w64-mingw32.tar.gz/md5/7f1fe93df0b741ca30c4fb64ff9ac9bd
+LibUV.v2.0.1+16.i686-w64-mingw32.tar.gz/sha512/9d71722c538d8232d8510fa2a43e7a52271b078401dfa838de9eedcfc34a2483aa3b1c221b17c41353b54554fe76d86b4973c5261b288228a91f0cc92820ad93
+LibUV.v2.0.1+16.powerpc64le-linux-gnu.tar.gz/md5/b796de6c75f18f318823e3e1cdd316c8
+LibUV.v2.0.1+16.powerpc64le-linux-gnu.tar.gz/sha512/f8dbb98cb49edfa06a0b48fbe1e658ca5a9bca13fe33d21872a012deaa1052a495faf74f90c0dfa48378b9f4f51f1045e01e563aec427d8c89d50e4eef0e4938
+LibUV.v2.0.1+16.x86_64-apple-darwin.tar.gz/md5/f2d55b315fa1f77b632a461530bb6b3b
+LibUV.v2.0.1+16.x86_64-apple-darwin.tar.gz/sha512/eb40a193c3bca5e822a417879e854877b353a2a04b03a721ef4125360f1189a3685d2751e2f975360a2ad4c37e6043485a54b5349b3da423b8aae73d4a095d04
+LibUV.v2.0.1+16.x86_64-linux-gnu.tar.gz/md5/a573ded4f78f8677ef73594be9629638
+LibUV.v2.0.1+16.x86_64-linux-gnu.tar.gz/sha512/c5809635be3ab5dc53c37a028e58695d89ea91eee850af22a0e8db10ea021640f1e618a553848332ee6df66eecd08d34605e335aad46ece82365a3525b69c42f
+LibUV.v2.0.1+16.x86_64-linux-musl.tar.gz/md5/5bdad561b5db7d19f198ef090ae3ec84
+LibUV.v2.0.1+16.x86_64-linux-musl.tar.gz/sha512/6662c8226f22f79f8c40857a5a531841f013031dd2e9536568498bfd536f133976ff71d0cc5f56f1e0c0b7f2403a35c2ccef9117d9e0d7819771bd492194f20d
+LibUV.v2.0.1+16.x86_64-unknown-freebsd.tar.gz/md5/f4ad9e445e4b14e2b59b2b77c9ed72ad
+LibUV.v2.0.1+16.x86_64-unknown-freebsd.tar.gz/sha512/a78deac6d8321f274a229961620da4d069ff2accf7d1ed9edfb01c21ad47eb33d364ba2f310ff4a93b2732dcd16f6d481843dbcb273770d731fd528f9c7a9ddc
+LibUV.v2.0.1+16.x86_64-w64-mingw32.tar.gz/md5/72caa067cf24e304955405dcb4de195a
+LibUV.v2.0.1+16.x86_64-w64-mingw32.tar.gz/sha512/de80ca98d199d3c5626ebc771325806ce3aae5927220201c2351207c10ff67791d2865f76e41519df88f0be3da534342965e7ba0d055d807c4b2b6c78bd2427d
+libuv-ca3a5a431a1c37859b6508e6b2a288092337029a.tar.gz/md5/d1fbca8bcc5819037b8b81ae4f61c357
+libuv-ca3a5a431a1c37859b6508e6b2a288092337029a.tar.gz/sha512/e735861923c0fc597b53eb2efb56b26acec29e3fcae7e76d349fc08f8b9d340df9ac60a1cd245e46a434aa357ed8e377734c1c97bf08bd044c9ba0c02b082a6a
diff --git a/deps/checksums/llvm b/deps/checksums/llvm
index 7effa4955a5f3..f54ddc7379b6e 100644
--- a/deps/checksums/llvm
+++ b/deps/checksums/llvm
@@ -246,7 +246,7 @@ libLLVM.v16.0.6+4.x86_64-w64-mingw32-cxx11-llvm_version+16.asserts.tar.gz/md5/f6
 libLLVM.v16.0.6+4.x86_64-w64-mingw32-cxx11-llvm_version+16.asserts.tar.gz/sha512/45930e3ae3bf3922c8b3096474cbe22035432e80d2b0f4ccbd424c69e874a76acf4a724e055a5ef73ce40ae00ee6ede60b210b8847c30239a6ec242550a3e464
 libLLVM.v16.0.6+4.x86_64-w64-mingw32-cxx11-llvm_version+16.tar.gz/md5/344f2a9d2b85a6c527fd6fa024d6763e
 libLLVM.v16.0.6+4.x86_64-w64-mingw32-cxx11-llvm_version+16.tar.gz/sha512/73909c58087568d8654d48ed5fc952289d8b3a4e26e956e9220cf254b8fb2c4b6630ebc9258502a6c3b67ed3cfe0cbe3a92ee3d346b228d842af03f0a42794c7
-llvm-julia-16.0.6-2.tar.gz/md5/71ca2225b042ec5ae666c99fa1bd19b1
-llvm-julia-16.0.6-2.tar.gz/sha512/6f2513adea1b939229c9be171e7ce41e488b3cfaa2e615912c4bc1ddaf0ab2e75df213a5d5db80105d6473a8017b0656016bbbb085ef00a38073519668885884
+llvm-julia-16.0.6-2.tar.gz/md5/f05607b71ac8d1e7c30430d2a9efa0a6
+llvm-julia-16.0.6-2.tar.gz/sha512/5f2f88b4673b13780fa819c78cb27fc5dab77c2976768ae4f7863b904c911e39fc18ee85d212e512a7c60081c74efd1fa2e7142b78002982533b7326ff808f24
 llvmunwind-12.0.1.tar.xz/md5/4ec327cee517fdb1f6a20e83748e2c7b
 llvmunwind-12.0.1.tar.xz/sha512/847b6ba03010a43f4fdbfdc49bf16d18fd18474d01584712e651b11191814bf7c1cf53475021d9ee447ed78413202b4ed97973d7bdd851d3e49f8d06f55a7af4
diff --git a/deps/checksums/mpfr b/deps/checksums/mpfr
index 1bb4eca6bf4ad..050e9cbd8d5a8 100644
--- a/deps/checksums/mpfr
+++ b/deps/checksums/mpfr
@@ -1,34 +1,34 @@
-MPFR.v4.2.0+1.aarch64-apple-darwin.tar.gz/md5/f9393a636497b19c846343b456b2dd7e
-MPFR.v4.2.0+1.aarch64-apple-darwin.tar.gz/sha512/a77a0387e84f572ef5558977096e70da8eb7b3674a8198cc6ae35462971f76d684145ffae7c2ddca32e2bd1c8b2ccb33e4447eb8606d5d5cd5958298472b3ea9
-MPFR.v4.2.0+1.aarch64-linux-gnu.tar.gz/md5/ade253017d195de694780c32f9161dcf
-MPFR.v4.2.0+1.aarch64-linux-gnu.tar.gz/sha512/1b68de5f8e557b7434c8c1bc016227b58683b56c0977b763422ea85a673bec446fcfee3a4f69e1d4689abb9bb6bf47f2a50fbb56ecac6a9d40096e66bd0f2080
-MPFR.v4.2.0+1.aarch64-linux-musl.tar.gz/md5/7dbd121c7192ccaf7191de5ab8d91afb
-MPFR.v4.2.0+1.aarch64-linux-musl.tar.gz/sha512/8614e3cb28491b24a0ec5060b44abaf264b61c91ddd29d70105ff583bd3112cff1b9bd5ed45e39f186265333982d5eeb8bf35fedc3b51b2a009cc7a51046b50b
-MPFR.v4.2.0+1.armv6l-linux-gnueabihf.tar.gz/md5/adb2b7fdf111c8b19df1516cfb278bb1
-MPFR.v4.2.0+1.armv6l-linux-gnueabihf.tar.gz/sha512/0c47aeffd05a194802f6c4e0e2779d56fb46007e6c3e145ee6992854a21a317a9d51512c59a0ce4ddcd314c387945225c6557d6c2ab6961ae4848875e8983de8
-MPFR.v4.2.0+1.armv6l-linux-musleabihf.tar.gz/md5/c30358bdeffcff65ba9be906cd35889b
-MPFR.v4.2.0+1.armv6l-linux-musleabihf.tar.gz/sha512/2857ec27ae2d53a451d62dd241ce9b43f7ee182bee180ecd9ad92c907c66d0b0ab2d1ea3b20fe61cc176ae44ecbe6041305cc8a9343b396c9cb54dd77a1e2868
-MPFR.v4.2.0+1.armv7l-linux-gnueabihf.tar.gz/md5/a1e30436bade2150c9dc924177f0c321
-MPFR.v4.2.0+1.armv7l-linux-gnueabihf.tar.gz/sha512/d2f4662c494fefda66847e7a085edda3ce396383aafb4e17fc2e176191b0f530541726c261cac3467f13136e8ec728c8a7cf0e352f3e9ebf960d153cbfe766b8
-MPFR.v4.2.0+1.armv7l-linux-musleabihf.tar.gz/md5/857e3c82804e7c853d21603f18caa715
-MPFR.v4.2.0+1.armv7l-linux-musleabihf.tar.gz/sha512/86cf3e940fd66820b5269e9aa2a49c3fc3077857bec037a08e0d301b0bf3cc5c79ac331cc6370d852e20f4acf8f601c49d5dbe24e96652e4411b3f33a11e3f45
-MPFR.v4.2.0+1.i686-linux-gnu.tar.gz/md5/5a432be79a112e67e970980f4bde13a0
-MPFR.v4.2.0+1.i686-linux-gnu.tar.gz/sha512/94198b23ac94dcb9dca95938a46b9899c3ef329bafbb13b32076cd3415b89f11908632c7c07e90549c01bd9ed7fc9a002dae07a645f85b8509234c49be729621
-MPFR.v4.2.0+1.i686-linux-musl.tar.gz/md5/4ce71dc250c2469f844a02c6ee6571a1
-MPFR.v4.2.0+1.i686-linux-musl.tar.gz/sha512/134b67b23de75ab172594cd0fac55b5c265730bfea195978698e3e6fbc47d65617652bd72d90ba092ed1bac4c29d5b2c109df5d8dc60b5d8f91159fd58575b67
-MPFR.v4.2.0+1.i686-w64-mingw32.tar.gz/md5/be7239432e8a26c59e2d418d310bd6e3
-MPFR.v4.2.0+1.i686-w64-mingw32.tar.gz/sha512/3144d84d41996fc19bfc9ed4f36755838470e17dce79895b37d93e32ae1cb1da428f2136948f939b19548d7dd62830ae43c434f88efbe192ed3184bae2df5970
-MPFR.v4.2.0+1.powerpc64le-linux-gnu.tar.gz/md5/d818894054b38232ba02ee0e129f6fe0
-MPFR.v4.2.0+1.powerpc64le-linux-gnu.tar.gz/sha512/0e73ca926f3e06466d1899f0b3e9ae4abe15102804dce6716ce23154344a571773c40d276f0038a0ae4e626799867ee715428e1d961334a01ad3091745367e8e
-MPFR.v4.2.0+1.x86_64-apple-darwin.tar.gz/md5/9652148df4e771be39713c4f43d3ff61
-MPFR.v4.2.0+1.x86_64-apple-darwin.tar.gz/sha512/91a0219fd1880dfa90d196fa403f4e1df0347ced58a4772492196b94476f346d80696885a4f3520424494bc09679cca0c0ccf2f6e9247d60b52ebdf564485e72
-MPFR.v4.2.0+1.x86_64-linux-gnu.tar.gz/md5/4de39327a792be708119ac7b43957628
-MPFR.v4.2.0+1.x86_64-linux-gnu.tar.gz/sha512/447b59d5589a8517061627668e8baed4366408cacc9d8e063528b9b795de6d27e4005844578310185f03f568f4948bc4a794624235875fb61b6187264b6f483b
-MPFR.v4.2.0+1.x86_64-linux-musl.tar.gz/md5/f9b8c3c094b339341b19828cc5e1d47c
-MPFR.v4.2.0+1.x86_64-linux-musl.tar.gz/sha512/c661e7c5bded3bdf11b2bd5e5ef4ad8e446934d9b82dfe26f0be1b83cea98d7e56e0903bfc1075f91c8d23401cc6b3b722f2d60f46d73cab884e81fe518aba27
-MPFR.v4.2.0+1.x86_64-unknown-freebsd.tar.gz/md5/e402dceae753abbdd8b11f3c8d96e0dd
-MPFR.v4.2.0+1.x86_64-unknown-freebsd.tar.gz/sha512/235f001f3b0101a6bafaeb45fb49d2992549b6c2f42a4e7ba38e1fa8c59246fe7463598e7cfda5ead50c9805dda0b82a23b5ae2af4ec993bb771611163e58907
-MPFR.v4.2.0+1.x86_64-w64-mingw32.tar.gz/md5/c5bbd2217060491e2773bdd84b055e5c
-MPFR.v4.2.0+1.x86_64-w64-mingw32.tar.gz/sha512/74b059b22990ab79f243284687f571f47447457ac2c1cb4c4548ea1f3d8ea01b7466281f48429cb39e2d11394fb86650bfada7acab639c6537a143a95bd6e7ca
-mpfr-4.2.0.tar.bz2/md5/f8c66d737283fd35f9fe433fb419b05f
-mpfr-4.2.0.tar.bz2/sha512/cb2a9314b94e34a4ea49ce2619802e9420c982e55258a4bc423f802740632646a3d420e7fcf373b19618385b8b2b412abfa127e8f473053863424cac233893c0
+MPFR.v4.2.1+0.aarch64-apple-darwin.tar.gz/md5/816f9ff59070f21f1df2f310e2606c06
+MPFR.v4.2.1+0.aarch64-apple-darwin.tar.gz/sha512/dad9adba7a8867d1ce26d77efb5c33b602b920a2cdbec84ea58a054cfab3ab7df54d2bda101de72b71604e7844993f1e216b002ba092e69277d0764040216c81
+MPFR.v4.2.1+0.aarch64-linux-gnu.tar.gz/md5/c1e3c9619af6454d8adae9bcbd911dba
+MPFR.v4.2.1+0.aarch64-linux-gnu.tar.gz/sha512/5d916492aa73d11e022a7ca3f31940ceb8f8667bdf878ba29d6256736a380a2f6a11ac90cd8de3f1d3454a79165db240a1b971b9794fd21692ed64502ec34b9a
+MPFR.v4.2.1+0.aarch64-linux-musl.tar.gz/md5/8ada267e2d23eb0c65ab2d2df02362d5
+MPFR.v4.2.1+0.aarch64-linux-musl.tar.gz/sha512/0c7f18e6d0f3e2052541e3279dfa9a74eb34067ac4fea0b17ab805cd73010cc83f8d7cb4eda8f4a904da398268d1c0d638c35521a9f339f8c7c3b5f159f27277
+MPFR.v4.2.1+0.armv6l-linux-gnueabihf.tar.gz/md5/42bdb78eee83f496d7da699ad9603913
+MPFR.v4.2.1+0.armv6l-linux-gnueabihf.tar.gz/sha512/edaa9ece1404a606d6b635406ad5e721c8d094ffa1c73ce19222afc2b4ea7b3b9e23e7c5589ae10fd9f4c4aefa265773bcfce6c510efbca57782115d43daeb13
+MPFR.v4.2.1+0.armv6l-linux-musleabihf.tar.gz/md5/2213207772b8a50de4768816fdc20e2f
+MPFR.v4.2.1+0.armv6l-linux-musleabihf.tar.gz/sha512/d24debc38b8135ac5c10c4ea19de0c69126b6881940b4e182118e12cc2c7cf0aca2db065620f0cca636742da32eddec5bda3b4f449a035274f05120c977ed449
+MPFR.v4.2.1+0.armv7l-linux-gnueabihf.tar.gz/md5/a0d9fe20c9ff0027b6816ee0102b1f9a
+MPFR.v4.2.1+0.armv7l-linux-gnueabihf.tar.gz/sha512/97ce02898dc0d29a616048fd7ecee3100a710f7a30a21f2276c01675749034a5241be88bd46dff3dbf9ea0adca98a4357bd16e43fa9520e7a02477494c2d072e
+MPFR.v4.2.1+0.armv7l-linux-musleabihf.tar.gz/md5/7898b9047c914b290b5928af5df63030
+MPFR.v4.2.1+0.armv7l-linux-musleabihf.tar.gz/sha512/cbefa9588752c65751630832417c1c42e4819d49ff9a505f61c2567ef4271097e585542fa898efd61409a43e439d827bb79f693a0937d0a3a427b39535979588
+MPFR.v4.2.1+0.i686-linux-gnu.tar.gz/md5/15fa598e5c1c723ff6cd2ad3ea51e437
+MPFR.v4.2.1+0.i686-linux-gnu.tar.gz/sha512/2ec4cf0c88363bc9fb39522bbcd6a9c2311c38efb166f604aab118fed39712beea68367ff5c4cabb2b7b3f5a53469414b8552fd22a70a637cbbfc936f0c4851b
+MPFR.v4.2.1+0.i686-linux-musl.tar.gz/md5/6dc6a00d3ea22e2c60374d49926598d6
+MPFR.v4.2.1+0.i686-linux-musl.tar.gz/sha512/4a90356091b53d7238dda59f6e9c5c420614f16460dc67310e581611ad46a2dd3324d6164cfecf1bcd660b8f2e473f0afe137aac954c608b11be3acbda648e14
+MPFR.v4.2.1+0.i686-w64-mingw32.tar.gz/md5/bda99a916573607716c61473153a1927
+MPFR.v4.2.1+0.i686-w64-mingw32.tar.gz/sha512/ed3f45ff5ac8f4588584dd80036d9f3623651c87276a9b624955c831009dc33f8804c2845bd187ba750515725c29d65ac5d70c71db1b953c618cd771d2b066d0
+MPFR.v4.2.1+0.powerpc64le-linux-gnu.tar.gz/md5/ac70f716bddd5323b4add663b473b52d
+MPFR.v4.2.1+0.powerpc64le-linux-gnu.tar.gz/sha512/ebb0f5ea76c892b7a4e4636706e71f476aaea58bb88e1734a7966c44495fda8c81318e0e8629e208185f0fc8d0c73b6f3463034cd831dfb5fbbd493a0689bc06
+MPFR.v4.2.1+0.x86_64-apple-darwin.tar.gz/md5/ff13e865e3be717b0fffc16296cb2f56
+MPFR.v4.2.1+0.x86_64-apple-darwin.tar.gz/sha512/98479210910945714da0285a40803674242581894a731ba4709c70dc1341849e736a88aa4914df0ff536c15f8848c417e712ff6abeb25047d300f8b215fd131f
+MPFR.v4.2.1+0.x86_64-linux-gnu.tar.gz/md5/48194b9f92ad01b168e8b9612f4c9559
+MPFR.v4.2.1+0.x86_64-linux-gnu.tar.gz/sha512/638eb40d23fd492972809cdc3326ad4c2c99d3eae1ca5f7c0da6e0e335bb596de2899da5b3e65153225654b2cd9a805298e7241a21395e07d0b333eb1f101b5d
+MPFR.v4.2.1+0.x86_64-linux-musl.tar.gz/md5/0babbb823964ccebf63b42fd07f08936
+MPFR.v4.2.1+0.x86_64-linux-musl.tar.gz/sha512/880b685d9b456fa2bf78e707273783423f9ff00791b529eba00c5e1b94ff96f4ba01e680152a4d6b45b695e3c1169d07f793db42c5a4120861813d5458dfc828
+MPFR.v4.2.1+0.x86_64-unknown-freebsd.tar.gz/md5/f11d634e5a19177fe36b2b2f6f5727ca
+MPFR.v4.2.1+0.x86_64-unknown-freebsd.tar.gz/sha512/291245c06edf31b2e39b6774359ebd4f95b924f19d2a7e8581822a5bf908426d00f0452c061a027da0d7d4bb2fa1bb7ef8ab6d8e49bc848d6d7450a8d5c8a9c4
+MPFR.v4.2.1+0.x86_64-w64-mingw32.tar.gz/md5/e6d1347d5da312f7301d578ce9d7c4d9
+MPFR.v4.2.1+0.x86_64-w64-mingw32.tar.gz/sha512/3ea4b944172be250677ef271f1e10c2b95861755f203795a50b8d0f76f72498897059271e44e038625c3b73cccbd0165685d60afa994180d42e912bffbe86729
+mpfr-4.2.1.tar.bz2/md5/7765afa036e4ce7fb0e02bce0fef894b
+mpfr-4.2.1.tar.bz2/sha512/c81842532ecc663348deb7400d911ad71933d3b525a2f9e5adcd04265c9c0fdd1f22eca229f482703ac7f222ef209fc9e339dd1fa47d72ae57f7f70b2336a76f
diff --git a/deps/libuv.version b/deps/libuv.version
index 9ae54aa7be91a..bc8e2e57c9517 100644
--- a/deps/libuv.version
+++ b/deps/libuv.version
@@ -4,4 +4,4 @@ LIBUV_JLL_NAME := LibUV
 ## source build
 LIBUV_VER := 2
 LIBUV_BRANCH=julia-uv2-1.48.0
-LIBUV_SHA1=afa1c67fa496eb49ade1e520f76fd018a1409eaa
+LIBUV_SHA1=ca3a5a431a1c37859b6508e6b2a288092337029a
diff --git a/deps/mpfr.version b/deps/mpfr.version
index e4f1c8a45aeb0..ec109e181ecdc 100644
--- a/deps/mpfr.version
+++ b/deps/mpfr.version
@@ -2,4 +2,4 @@
 MPFR_JLL_NAME := MPFR
 
 ## source build
-MPFR_VER := 4.2.0
+MPFR_VER := 4.2.1
diff --git a/doc/src/base/arrays.md b/doc/src/base/arrays.md
index f7ea23ad3b556..20e8e81614b9e 100644
--- a/doc/src/base/arrays.md
+++ b/doc/src/base/arrays.md
@@ -139,7 +139,6 @@ Base.reshape
 Base.dropdims
 Base.vec
 Base.SubArray
-Base.wrap
 ```
 
 ## Concatenation and permutation
diff --git a/src/codegen-stubs.c b/src/codegen-stubs.c
index 26b8226b6e4be..30026b0876a3c 100644
--- a/src/codegen-stubs.c
+++ b/src/codegen-stubs.c
@@ -38,7 +38,7 @@ JL_DLLEXPORT void jl_register_fptrs_fallback(uint64_t image_base, const struct _
     (void)image_base; (void)fptrs; (void)linfos; (void)n;
 }
 
-JL_DLLEXPORT jl_code_instance_t *jl_generate_fptr_fallback(jl_method_instance_t *mi JL_PROPAGATES_ROOT, size_t world)
+JL_DLLEXPORT jl_code_instance_t *jl_generate_fptr_fallback(jl_method_instance_t *mi JL_PROPAGATES_ROOT, size_t world, int *did_compile)
 {
     return NULL;
 }
diff --git a/src/codegen.cpp b/src/codegen.cpp
index 4b8666c223c28..09a2d635737cf 100644
--- a/src/codegen.cpp
+++ b/src/codegen.cpp
@@ -1615,9 +1615,9 @@ static const auto &builtin_func_map() {
           { jl_f_memoryref_addr,          new JuliaFunction<>{XSTR(jl_f_memoryref), get_func_sig, get_func_attrs} },
           { jl_f_memoryrefoffset_addr,    new JuliaFunction<>{XSTR(jl_f_memoryrefoffset), get_func_sig, get_func_attrs} },
           { jl_f_memoryrefset_addr,       new JuliaFunction<>{XSTR(jl_f_memoryrefset), get_func_sig, get_func_attrs} },
-          { jl_f_memoryrefswap_addr,      new JuliaFunction<>{XSTR(jl_f_memoryswapset), get_func_sig, get_func_attrs} },
-          { jl_f_memoryrefreplace_addr,   new JuliaFunction<>{XSTR(jl_f_memoryreplaceset), get_func_sig, get_func_attrs} },
-          { jl_f_memoryrefmodify_addr,    new JuliaFunction<>{XSTR(jl_f_memorymodifyset), get_func_sig, get_func_attrs} },
+          { jl_f_memoryrefswap_addr,      new JuliaFunction<>{XSTR(jl_f_memoryrefswap), get_func_sig, get_func_attrs} },
+          { jl_f_memoryrefreplace_addr,   new JuliaFunction<>{XSTR(jl_f_memoryrefreplace), get_func_sig, get_func_attrs} },
+          { jl_f_memoryrefmodify_addr,    new JuliaFunction<>{XSTR(jl_f_memoryrefmodify), get_func_sig, get_func_attrs} },
           { jl_f_memoryrefsetonce_addr,   new JuliaFunction<>{XSTR(jl_f_memoryrefsetonce), get_func_sig, get_func_attrs} },
           { jl_f_memoryref_isassigned_addr,new JuliaFunction<>{XSTR(jl_f_memoryref_isassigned), get_func_sig, get_func_attrs} },
           { jl_f_apply_type_addr,         new JuliaFunction<>{XSTR(jl_f_apply_type), get_func_sig, get_func_attrs} },
@@ -7373,6 +7373,7 @@ static jl_cgval_t emit_cfunction(jl_codectx_t &ctx, jl_value_t *output_type, con
     if (ctx.emission_context.TargetTriple.isAArch64() || ctx.emission_context.TargetTriple.isARM() || ctx.emission_context.TargetTriple.isPPC64()) {
         if (nest) {
             emit_error(ctx, "cfunction: closures are not supported on this platform");
+            JL_GC_POP();
             return jl_cgval_t();
         }
     }
diff --git a/src/gc-heap-snapshot.cpp b/src/gc-heap-snapshot.cpp
index 5007f88939701..77a6e70a127e6 100644
--- a/src/gc-heap-snapshot.cpp
+++ b/src/gc-heap-snapshot.cpp
@@ -606,7 +606,9 @@ void _record_gc_just_edge(const char *edge_type, size_t from_idx, size_t to_idx,
 void final_serialize_heap_snapshot(ios_t *json, ios_t *strings, HeapSnapshot &snapshot, char all_one)
 {
     // mimicking https://github.com/nodejs/node/blob/5fd7a72e1c4fbaf37d3723c4c81dce35c149dc84/deps/v8/src/profiler/heap-snapshot-generator.cc#L2567-L2567
+    // also https://github.com/microsoft/vscode-v8-heap-tools/blob/c5b34396392397925ecbb4ecb904a27a2754f2c1/v8-heap-parser/src/decoder.rs#L43-L51
     ios_printf(json, "{\"snapshot\":{");
+
     ios_printf(json, "\"meta\":{");
     ios_printf(json, "\"node_fields\":[\"type\",\"name\",\"id\",\"self_size\",\"edge_count\",\"trace_node_id\",\"detachedness\"],");
     ios_printf(json, "\"node_types\":[");
@@ -617,10 +619,26 @@ void final_serialize_heap_snapshot(ios_t *json, ios_t *strings, HeapSnapshot &sn
     ios_printf(json, "\"edge_types\":[");
     snapshot.edge_types.print_json_array(json, false);
     ios_printf(json, ",");
-    ios_printf(json, "\"string_or_number\",\"from_node\"]");
+    ios_printf(json, "\"string_or_number\",\"from_node\"],");
+    // not used. Required by microsoft/vscode-v8-heap-tools
+    ios_printf(json, "\"trace_function_info_fields\":[\"function_id\",\"name\",\"script_name\",\"script_id\",\"line\",\"column\"],");
+    ios_printf(json, "\"trace_node_fields\":[\"id\",\"function_info_index\",\"count\",\"size\",\"children\"],");
+    ios_printf(json, "\"sample_fields\":[\"timestamp_us\",\"last_assigned_id\"],");
+    ios_printf(json, "\"location_fields\":[\"object_index\",\"script_id\",\"line\",\"column\"]");
+    // end not used
     ios_printf(json, "},\n"); // end "meta"
+
     ios_printf(json, "\"node_count\":%zu,", snapshot.num_nodes);
-    ios_printf(json, "\"edge_count\":%zu", snapshot.num_edges);
-    ios_printf(json, "}\n"); // end "snapshot"
+    ios_printf(json, "\"edge_count\":%zu,", snapshot.num_edges);
+    ios_printf(json, "\"trace_function_count\":0"); // not used. Required by microsoft/vscode-v8-heap-tools
+    ios_printf(json, "},\n"); // end "snapshot"
+
+    // not used. Required by microsoft/vscode-v8-heap-tools
+    ios_printf(json, "\"trace_function_infos\":[],");
+    ios_printf(json, "\"trace_tree\":[],");
+    ios_printf(json, "\"samples\":[],");
+    ios_printf(json, "\"locations\":[]");
+    // end not used
+
     ios_printf(json, "}");
 }
diff --git a/src/gf.c b/src/gf.c
index 93c1c61affd2d..d0ed5bdfc2f19 100644
--- a/src/gf.c
+++ b/src/gf.c
@@ -2530,7 +2530,8 @@ jl_code_instance_t *jl_compile_method_internal(jl_method_instance_t *mi, size_t
         }
     }
 
-    codeinst = jl_generate_fptr(mi, world);
+    int did_compile = 0;
+    codeinst = jl_generate_fptr(mi, world, &did_compile);
     if (!codeinst) {
         jl_method_instance_t *unspec = jl_get_unspecialized_from_mi(mi);
         jl_code_instance_t *ucache = jl_get_method_inferred(unspec, (jl_value_t*)jl_any_type, 1, ~(size_t)0);
@@ -2568,7 +2569,7 @@ jl_code_instance_t *jl_compile_method_internal(jl_method_instance_t *mi, size_t
         jl_atomic_store_release(&codeinst->invoke, ucache_invoke);
         jl_mi_cache_insert(mi, codeinst);
     }
-    else {
+    else if (did_compile) {
         record_precompile_statement(mi);
     }
     jl_atomic_store_relaxed(&codeinst->precompile, 1);
diff --git a/src/jitlayers.cpp b/src/jitlayers.cpp
index cb6267866eac1..2fb99c7ddba2b 100644
--- a/src/jitlayers.cpp
+++ b/src/jitlayers.cpp
@@ -470,8 +470,10 @@ void jl_extern_c_impl(jl_value_t *declrt, jl_tupletype_t *sigt)
 
 // this compiles li and emits fptr
 extern "C" JL_DLLEXPORT_CODEGEN
-jl_code_instance_t *jl_generate_fptr_impl(jl_method_instance_t *mi JL_PROPAGATES_ROOT, size_t world)
+jl_code_instance_t *jl_generate_fptr_impl(jl_method_instance_t *mi JL_PROPAGATES_ROOT, size_t world, int *did_compile)
 {
+    if (did_compile != NULL)
+        *did_compile = 0;
     auto ct = jl_current_task;
     bool timed = (ct->reentrant_timing & 1) == 0;
     if (timed)
@@ -526,6 +528,8 @@ jl_code_instance_t *jl_generate_fptr_impl(jl_method_instance_t *mi JL_PROPAGATES
         _jl_compile_codeinst(codeinst, src, world, *jl_ExecutionEngine->getContext(), is_recompile);
         if (jl_atomic_load_relaxed(&codeinst->invoke) == NULL)
             codeinst = NULL;
+        else if (did_compile != NULL)
+            *did_compile = 1;
     }
     else {
         codeinst = NULL;
@@ -613,7 +617,7 @@ jl_value_t *jl_dump_method_asm_impl(jl_method_instance_t *mi, size_t world,
         char emit_mc, char getwrapper, const char* asm_variant, const char *debuginfo, char binary)
 {
     // printing via disassembly
-    jl_code_instance_t *codeinst = jl_generate_fptr(mi, world);
+    jl_code_instance_t *codeinst = jl_generate_fptr(mi, world, NULL);
     if (codeinst) {
         uintptr_t fptr = (uintptr_t)jl_atomic_load_acquire(&codeinst->invoke);
         if (getwrapper)
diff --git a/src/julia_internal.h b/src/julia_internal.h
index cdb543e440c2d..67324299bfb1e 100644
--- a/src/julia_internal.h
+++ b/src/julia_internal.h
@@ -1425,7 +1425,6 @@ JL_DLLEXPORT jl_value_t *jl_abs_float(jl_value_t *a);
 JL_DLLEXPORT jl_value_t *jl_copysign_float(jl_value_t *a, jl_value_t *b);
 JL_DLLEXPORT jl_value_t *jl_flipsign_int(jl_value_t *a, jl_value_t *b);
 
-JL_DLLEXPORT jl_value_t *jl_arraylen(jl_value_t *a);
 JL_DLLEXPORT jl_value_t *jl_have_fma(jl_value_t *a);
 JL_DLLEXPORT int jl_stored_inline(jl_value_t *el_type);
 JL_DLLEXPORT jl_value_t *(jl_array_data_owner)(jl_array_t *a);
@@ -1725,7 +1724,7 @@ JL_DLLEXPORT uint32_t jl_crc32c(uint32_t crc, const char *buf, size_t len);
 
 #define IR_FLAG_INBOUNDS 0x01
 
-JL_DLLIMPORT jl_code_instance_t *jl_generate_fptr(jl_method_instance_t *mi JL_PROPAGATES_ROOT, size_t world);
+JL_DLLIMPORT jl_code_instance_t *jl_generate_fptr(jl_method_instance_t *mi JL_PROPAGATES_ROOT, size_t world, int *did_compile);
 JL_DLLIMPORT void jl_generate_fptr_for_unspecialized(jl_code_instance_t *unspec);
 JL_DLLIMPORT void jl_generate_fptr_for_oc_wrapper(jl_code_instance_t *unspec);
 JL_DLLIMPORT int jl_compile_extern_c(LLVMOrcThreadSafeModuleRef llvmmod, void *params, void *sysimg, jl_value_t *declrt, jl_value_t *sigt);
diff --git a/src/rtutils.c b/src/rtutils.c
index a1c1622b0b5ee..f628f927f782d 100644
--- a/src/rtutils.c
+++ b/src/rtutils.c
@@ -297,6 +297,7 @@ JL_DLLEXPORT void jl_eh_restore_state(jl_task_t *ct, jl_handler_t *eh)
 
 JL_DLLEXPORT void jl_eh_restore_state_noexcept(jl_task_t *ct, jl_handler_t *eh)
 {
+    assert(ct->gcstack == eh->gcstack && "Incorrect GC usage under try catch");
     ct->eh = eh->prev;
     ct->ptls->defer_signal = eh->defer_signal; // optional, but certain try-finally (in stream.jl) may be slightly harder to write without this
 }
diff --git a/stdlib/FileWatching/src/pidfile.jl b/stdlib/FileWatching/src/pidfile.jl
index 71b596ba35f12..ae708fa977add 100644
--- a/stdlib/FileWatching/src/pidfile.jl
+++ b/stdlib/FileWatching/src/pidfile.jl
@@ -282,7 +282,7 @@ function open_exclusive(path::String;
 end
 
 function _rand_filename(len::Int=4) # modified from Base.Libc
-    slug = Base.StringVector(len)
+    slug = Base.StringMemory(len)
     chars = b"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"
     for i = 1:len
         slug[i] = chars[(Libc.rand() % length(chars)) + 1]
diff --git a/stdlib/LibUV_jll/Project.toml b/stdlib/LibUV_jll/Project.toml
index 8089516c1df14..7c61fdf89df70 100644
--- a/stdlib/LibUV_jll/Project.toml
+++ b/stdlib/LibUV_jll/Project.toml
@@ -1,6 +1,6 @@
 name = "LibUV_jll"
 uuid = "183b4373-6708-53ba-ad28-60e28bb38547"
-version = "2.0.1+15"
+version = "2.0.1+16"
 
 [deps]
 Libdl = "8f399da3-3557-5675-b5ff-fb832c97cbdb"
diff --git a/stdlib/LinearAlgebra/src/LinearAlgebra.jl b/stdlib/LinearAlgebra/src/LinearAlgebra.jl
index cfa99525d2dcb..a42ca934e17a6 100644
--- a/stdlib/LinearAlgebra/src/LinearAlgebra.jl
+++ b/stdlib/LinearAlgebra/src/LinearAlgebra.jl
@@ -297,14 +297,14 @@ julia> LinearAlgebra.checksquare(A, B)
 """
 function checksquare(A)
     m,n = size(A)
-    m == n || throw(DimensionMismatch("matrix is not square: dimensions are $(size(A))"))
+    m == n || throw(DimensionMismatch(lazy"matrix is not square: dimensions are $(size(A))"))
     m
 end
 
 function checksquare(A...)
     sizes = Int[]
     for a in A
-        size(a,1)==size(a,2) || throw(DimensionMismatch("matrix is not square: dimensions are $(size(a))"))
+        size(a,1)==size(a,2) || throw(DimensionMismatch(lazy"matrix is not square: dimensions are $(size(a))"))
         push!(sizes, size(a,1))
     end
     return sizes
diff --git a/stdlib/LinearAlgebra/src/dense.jl b/stdlib/LinearAlgebra/src/dense.jl
index 91c38e7f0b09b..72c3792d7867c 100644
--- a/stdlib/LinearAlgebra/src/dense.jl
+++ b/stdlib/LinearAlgebra/src/dense.jl
@@ -216,13 +216,16 @@ function diagind(::IndexCartesian, m::Integer, n::Integer, k::Integer=0)
 end
 
 """
-    diagind(M::AbstractMatrix, [k::Integer=0,] indstyle::IndexStyle = IndexLinear())
+    diagind(M::AbstractMatrix, k::Integer = 0, indstyle::IndexStyle = IndexLinear())
+    diagind(M::AbstractMatrix, indstyle::IndexStyle = IndexLinear())
 
 An `AbstractRange` giving the indices of the `k`th diagonal of the matrix `M`.
 Optionally, an index style may be specified which determines the type of the range returned.
 If `indstyle isa IndexLinear` (default), this returns an `AbstractRange{Integer}`.
 On the other hand, if `indstyle isa IndexCartesian`, this returns an `AbstractRange{CartesianIndex{2}}`.
 
+If `k` is not provided, it is assumed to be `0` (corresponding to the main diagonal).
+
 See also: [`diag`](@ref), [`diagm`](@ref), [`Diagonal`](@ref).
 
 # Examples
@@ -233,9 +236,15 @@ julia> A = [1 2 3; 4 5 6; 7 8 9]
  4  5  6
  7  8  9
 
-julia> diagind(A,-1)
+julia> diagind(A, -1)
 2:4:6
+
+julia> diagind(A, IndexCartesian())
+StepRangeLen(CartesianIndex(1, 1), CartesianIndex(1, 1), 3)
 ```
+
+!!! compat "Julia 1.11"
+     Specifying an `IndexStyle` requires at least Julia 1.11.
 """
 function diagind(A::AbstractMatrix, k::Integer=0, indexstyle::IndexStyle = IndexLinear())
     require_one_based_indexing(A)
diff --git a/stdlib/MPFR_jll/Project.toml b/stdlib/MPFR_jll/Project.toml
index e4b24d070db55..eaa8d0988b2ca 100644
--- a/stdlib/MPFR_jll/Project.toml
+++ b/stdlib/MPFR_jll/Project.toml
@@ -1,6 +1,6 @@
 name = "MPFR_jll"
 uuid = "3a97d323-0669-5f0c-9066-3539efd106a3"
-version = "4.2.0+1"
+version = "4.2.1+0"
 
 [deps]
 GMP_jll = "781609d7-10c4-51f6-84f2-b8444358ff6d"
diff --git a/stdlib/MPFR_jll/test/runtests.jl b/stdlib/MPFR_jll/test/runtests.jl
index 81b6e06ed7b49..fc931b462fa9c 100644
--- a/stdlib/MPFR_jll/test/runtests.jl
+++ b/stdlib/MPFR_jll/test/runtests.jl
@@ -4,5 +4,5 @@ using Test, Libdl, MPFR_jll
 
 @testset "MPFR_jll" begin
     vn = VersionNumber(unsafe_string(ccall((:mpfr_get_version,libmpfr), Cstring, ())))
-    @test vn == v"4.2.0"
+    @test vn == v"4.2.1"
 end
diff --git a/stdlib/Manifest.toml b/stdlib/Manifest.toml
index f2ae43f231db5..80ecce3883490 100644
--- a/stdlib/Manifest.toml
+++ b/stdlib/Manifest.toml
@@ -2,7 +2,7 @@
 
 julia_version = "1.12.0-DEV"
 manifest_format = "2.0"
-project_hash = "13f2dd600364a1e8b659dc5796bf185b37d1c95d"
+project_hash = "d3a1f6b706609fe0c59521e1d770be6e2b8c489d"
 
 [[deps.ArgTools]]
 uuid = "0dad84c5-d112-42e6-8d28-ef12dabb789f"
@@ -23,7 +23,7 @@ version = "1.11.0"
 [[deps.CompilerSupportLibraries_jll]]
 deps = ["Artifacts", "Libdl"]
 uuid = "e66e0078-7015-5450-92f7-15fbd957f2ae"
-version = "1.1.0+0"
+version = "1.1.1+0"
 
 [[deps.Dates]]
 deps = ["Printf"]
@@ -113,7 +113,7 @@ version = "1.11.0+1"
 [[deps.LibUV_jll]]
 deps = ["Artifacts", "Libdl"]
 uuid = "183b4373-6708-53ba-ad28-60e28bb38547"
-version = "2.0.1+15"
+version = "2.0.1+16"
 
 [[deps.LibUnwind_jll]]
 deps = ["Artifacts", "Libdl"]
@@ -137,7 +137,7 @@ version = "1.11.0"
 [[deps.MPFR_jll]]
 deps = ["Artifacts", "GMP_jll", "Libdl"]
 uuid = "3a97d323-0669-5f0c-9066-3539efd106a3"
-version = "4.2.0+1"
+version = "4.2.1+0"
 
 [[deps.Markdown]]
 deps = ["Base64"]
@@ -155,7 +155,7 @@ version = "1.11.0"
 
 [[deps.MozillaCACerts_jll]]
 uuid = "14a3606d-f60d-562e-9121-12d972cd8159"
-version = "2023.12.12"
+version = "2024.3.11"
 
 [[deps.NetworkOptions]]
 uuid = "ca575930-c2e3-43a9-ace4-1e988b2c1908"
@@ -177,9 +177,9 @@ uuid = "efcefdf7-47ab-520b-bdef-62a2eaa19f15"
 version = "10.42.0+1"
 
 [[deps.Pkg]]
-deps = ["Artifacts", "Dates", "Downloads", "FileWatching", "LibGit2", "Libdl", "Logging", "Markdown", "Printf", "Random", "SHA", "Serialization", "TOML", "Tar", "UUIDs", "p7zip_jll"]
+deps = ["Artifacts", "Dates", "Downloads", "FileWatching", "LibGit2", "Libdl", "Logging", "Markdown", "Printf", "Random", "SHA", "TOML", "Tar", "UUIDs", "p7zip_jll"]
 uuid = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
-version = "1.11.0"
+version = "1.12.0"
 weakdeps = ["REPL"]
 
     [deps.Pkg.extensions]
@@ -191,6 +191,7 @@ uuid = "de0858da-6303-5e67-8744-51eddeeeb8d7"
 version = "1.11.0"
 
 [[deps.Profile]]
+deps = ["Unicode"]
 uuid = "9abbd945-dff8-562f-b5e8-e1ebf5ef1b79"
 version = "1.11.0"
 
diff --git a/stdlib/Profile/Project.toml b/stdlib/Profile/Project.toml
index ad0107ecf9404..ede7ccd66bc8e 100644
--- a/stdlib/Profile/Project.toml
+++ b/stdlib/Profile/Project.toml
@@ -2,6 +2,12 @@ name = "Profile"
 uuid = "9abbd945-dff8-562f-b5e8-e1ebf5ef1b79"
 version = "1.11.0"
 
+[deps]
+Unicode = "4ec0a83e-493e-50e2-b9ac-8f72acf5a8f5"
+
+[compat]
+Unicode = "1.11.0"
+
 [extras]
 Base64 = "2a0f44e3-6c83-55bd-87e4-b1978d98bd5f"
 Logging = "56ddb016-857b-54e1-b83d-db4d58db5568"
diff --git a/stdlib/Profile/src/Allocs.jl b/stdlib/Profile/src/Allocs.jl
index 59399b1f21bb3..bf0a734b55bf8 100644
--- a/stdlib/Profile/src/Allocs.jl
+++ b/stdlib/Profile/src/Allocs.jl
@@ -54,18 +54,17 @@ julia> last(sort(results.allocs, by=x->x.size))
 Profile.Allocs.Alloc(Vector{Any}, Base.StackTraces.StackFrame[_new_array_ at array.c:127, ...], 5576)
 ```
 
-The best way to visualize these is currently with the
-[PProf.jl](https://github.com/JuliaPerf/PProf.jl) package,
-by invoking `PProf.Allocs.pprof`.
-
-!!! note
-    The current implementation of the Allocations Profiler does not
-    capture types for all allocations. Allocations for which the profiler
-    could not capture the type are represented as having type
-    `Profile.Allocs.UnknownType`.
-
-    You can read more about the missing types and the plan to improve this, here:
-    <https://github.com/JuliaLang/julia/issues/43688>.
+See the profiling tutorial in the Julia documentation for more information.
+
+!!! compat "Julia 1.11"
+
+    Older versions of Julia could not capture types in all cases. In older versions of
+    Julia, if you see an allocation of type `Profile.Allocs.UnknownType`, it means that
+    the profiler doesn't know what type of object was allocated. This mainly happened when
+    the allocation was coming from generated code produced by the compiler. See
+    [issue #43688](https://github.com/JuliaLang/julia/issues/43688) for more info.
+
+    Since Julia 1.11, all allocations should have a type reported.
 
 !!! compat "Julia 1.8"
     The allocation profiler was added in Julia 1.8.
diff --git a/stdlib/Profile/src/Profile.jl b/stdlib/Profile/src/Profile.jl
index e426884f058b9..ee3b178eda423 100644
--- a/stdlib/Profile/src/Profile.jl
+++ b/stdlib/Profile/src/Profile.jl
@@ -1288,6 +1288,7 @@ function take_heap_snapshot(filepath::AbstractString, all_one::Bool=false; strea
         prefix = filepath
         _stream_heap_snapshot(prefix, all_one)
         Profile.HeapSnapshot.assemble_snapshot(prefix, filepath)
+        Profile.HeapSnapshot.cleanup_streamed_files(prefix)
     end
     return filepath
 end
diff --git a/stdlib/Profile/src/heapsnapshot_reassemble.jl b/stdlib/Profile/src/heapsnapshot_reassemble.jl
index b39f53a8bda03..27d7d12318ed1 100644
--- a/stdlib/Profile/src/heapsnapshot_reassemble.jl
+++ b/stdlib/Profile/src/heapsnapshot_reassemble.jl
@@ -2,6 +2,8 @@
 
 module HeapSnapshot
 
+using Unicode
+
 """
     assemble_snapshot(filepath::AbstractString, out_file::AbstractString)
 
@@ -92,7 +94,7 @@ function assemble_snapshot(in_prefix, io::IO)
     node_count = parse(Int, String(@view preamble[pos:endpos]))
 
     pos = last(findnext("edge_count\":", preamble, endpos)) + 1
-    endpos = findnext(==('}'), preamble, pos) - 1
+    endpos = findnext(==(','), preamble, pos) - 1
     edge_count = parse(Int, String(@view preamble[pos:endpos]))
 
     nodes = Nodes(node_count, edge_count)
@@ -137,7 +139,8 @@ function assemble_snapshot(in_prefix, io::IO)
     end
 
     _digits_buf = zeros(UInt8, ndigits(typemax(UInt)))
-    println(io, @view(preamble[1:end-2]), ",") # remove trailing "}\n", we don't end the snapshot here
+    println(io, @view(preamble[1:end-1]), ",") # remove trailing "}" to reopen the object
+
     println(io, "\"nodes\":[")
     for i in 1:length(nodes)
         i > 1 && println(io, ",")
@@ -182,12 +185,11 @@ function assemble_snapshot(in_prefix, io::IO)
             str_bytes = read(strings_io, str_size)
             str = String(str_bytes)
             if first
-                print_str_escape_json(io, str)
                 first = false
             else
                 print(io, ",\n")
-                print_str_escape_json(io, str)
             end
+            print_str_escape_json(io, str)
         end
     end
     print(io, "]}")
@@ -202,6 +204,19 @@ function assemble_snapshot(in_prefix, io::IO)
     return nothing
 end
 
+"""
+    cleanup_streamed_files(prefix::AbstractString)
+
+Remove files streamed during `take_heap_snapshot` in streaming mode.
+"""
+function cleanup_streamed_files(prefix::AbstractString)
+    rm(string(prefix, ".metadata.json"))
+    rm(string(prefix, ".nodes"))
+    rm(string(prefix, ".edges"))
+    rm(string(prefix, ".strings"))
+    return nothing
+end
+
 function print_str_escape_json(stream::IO, s::AbstractString)
     print(stream, '"')
     for c in s
@@ -221,6 +236,9 @@ function print_str_escape_json(stream::IO, s::AbstractString)
             print(stream, "\\t")
         elseif '\x00' <= c <= '\x1f'
             print(stream, "\\u", lpad(string(UInt16(c), base=16), 4, '0'))
+        elseif !Unicode.isassigned(c)
+            # we have to do this because vscode's viewer doesn't like the replace character
+            print(stream, "[invalid unicode character]")
         else
             print(stream, c)
         end
diff --git a/stdlib/REPL/src/REPL.jl b/stdlib/REPL/src/REPL.jl
index 43181485183d2..5e92ea920b640 100644
--- a/stdlib/REPL/src/REPL.jl
+++ b/stdlib/REPL/src/REPL.jl
@@ -1340,7 +1340,7 @@ function setup_interface(
                     # execute the statement
                     terminal = LineEdit.terminal(s) # This is slightly ugly but ok for now
                     raw!(terminal, false) && disable_bracketed_paste(terminal)
-                    LineEdit.mode(s).on_done(s, LineEdit.buffer(s), true)
+                    @invokelatest LineEdit.mode(s).on_done(s, LineEdit.buffer(s), true)
                     raw!(terminal, true) && enable_bracketed_paste(terminal)
                     LineEdit.push_undo(s) # when the last line is incomplete
                 end
diff --git a/test/.gitignore b/test/.gitignore
index fc55a0df3a173..20bf199b87c74 100644
--- a/test/.gitignore
+++ b/test/.gitignore
@@ -4,3 +4,4 @@
 /libccalltest.*
 /relocatedepot
 /RelocationTestPkg2/src/foo.txt
+/RelocationTestPkg*/Manifest.toml
diff --git a/test/Makefile b/test/Makefile
index 31f8f20615d7a..1b9cb377c943d 100644
--- a/test/Makefile
+++ b/test/Makefile
@@ -43,6 +43,7 @@ relocatedepot:
 	@cp -R $(SRCDIR)/RelocationTestPkg1 $(SRCDIR)/relocatedepot
 	@cp -R $(SRCDIR)/RelocationTestPkg2 $(SRCDIR)/relocatedepot
 	@cp -R $(SRCDIR)/RelocationTestPkg3 $(SRCDIR)/relocatedepot
+	@cp -R $(SRCDIR)/RelocationTestPkg4 $(SRCDIR)/relocatedepot
 	@cd $(SRCDIR) && \
 	$(call PRINT_JULIA, $(call spawn,RELOCATEDEPOT="" $(JULIA_EXECUTABLE)) --check-bounds=yes --startup-file=no --depwarn=error ./runtests.jl $@)
 
@@ -55,6 +56,7 @@ revise-relocatedepot: revise-% :
 	@cp -R $(SRCDIR)/RelocationTestPkg1 $(SRCDIR)/relocatedepot
 	@cp -R $(SRCDIR)/RelocationTestPkg2 $(SRCDIR)/relocatedepot
 	@cp -R $(SRCDIR)/RelocationTestPkg3 $(SRCDIR)/relocatedepot
+	@cp -R $(SRCDIR)/RelocationTestPkg4 $(SRCDIR)/relocatedepot
 	@cd $(SRCDIR) && \
 	$(call PRINT_JULIA, $(call spawn,RELOCATEDEPOT="" $(JULIA_EXECUTABLE)) --check-bounds=yes --startup-file=no --depwarn=error ./runtests.jl --revise $*)
 
diff --git a/test/RelocationTestPkg4/Project.toml b/test/RelocationTestPkg4/Project.toml
new file mode 100644
index 0000000000000..8334a684f064e
--- /dev/null
+++ b/test/RelocationTestPkg4/Project.toml
@@ -0,0 +1,6 @@
+name = "RelocationTestPkg4"
+uuid = "d423d817-d7e9-49ac-b245-9d9d6db0b429"
+version = "0.1.0"
+
+[deps]
+RelocationTestPkg1 = "854e1adb-5a97-46bf-a391-1cfe05ac726d"
diff --git a/test/RelocationTestPkg4/src/RelocationTestPkg4.jl b/test/RelocationTestPkg4/src/RelocationTestPkg4.jl
new file mode 100644
index 0000000000000..d24a51d19a918
--- /dev/null
+++ b/test/RelocationTestPkg4/src/RelocationTestPkg4.jl
@@ -0,0 +1,5 @@
+module RelocationTestPkg4
+
+greet() = print("Hello World!")
+
+end # module RelocationTestPkg4
diff --git a/test/abstractarray.jl b/test/abstractarray.jl
index 732ffba85ae84..a156953476c43 100644
--- a/test/abstractarray.jl
+++ b/test/abstractarray.jl
@@ -2059,3 +2059,34 @@ end
         @test r2[i] == z[j]
     end
 end
+
+@testset "_unsetindex!" begin
+    struct MyMatrixUnsetIndexCartInds{T,A<:AbstractMatrix{T}} <: AbstractMatrix{T}
+        data :: A
+    end
+    Base.size(A::MyMatrixUnsetIndexCartInds) = size(A.data)
+    Base.getindex(M::MyMatrixUnsetIndexCartInds, i::Int, j::Int) = M.data[i,j]
+    Base.setindex!(M::MyMatrixUnsetIndexCartInds, v, i::Int, j::Int) = setindex!(M.data, v, i, j)
+    struct MyMatrixUnsetIndexLinInds{T,A<:AbstractMatrix{T}} <: AbstractMatrix{T}
+        data :: A
+    end
+    Base.size(A::MyMatrixUnsetIndexLinInds) = size(A.data)
+    Base.getindex(M::MyMatrixUnsetIndexLinInds, i::Int) = M.data[i]
+    Base.setindex!(M::MyMatrixUnsetIndexLinInds, v, i::Int) = setindex!(M.data, v, i)
+    Base.IndexStyle(::Type{<:MyMatrixUnsetIndexLinInds}) = IndexLinear()
+
+    function test_unsetindex(MT)
+        M = MT(ones(2,2))
+        M2 = MT(Matrix{BigFloat}(undef, 2,2))
+        copyto!(M, M2)
+        @test all(==(1), M)
+        M3 = MT(Matrix{BigFloat}(undef, 2,2))
+        for i in eachindex(M3)
+            @test !isassigned(M3, i)
+        end
+        M3 .= 1
+        @test_throws MethodError copyto!(M3, M2)
+    end
+    test_unsetindex(MyMatrixUnsetIndexCartInds)
+    test_unsetindex(MyMatrixUnsetIndexLinInds)
+end
diff --git a/test/arrayops.jl b/test/arrayops.jl
index 566dd44b8dcd9..a31d373a65a38 100644
--- a/test/arrayops.jl
+++ b/test/arrayops.jl
@@ -3187,23 +3187,40 @@ end
     end
 end
 
-@testset "Wrapping Memory into Arrays" begin
-    mem = Memory{Int}(undef, 10) .= 1
-    memref = MemoryRef(mem)
-    @test_throws DimensionMismatch wrap(Array, mem, (10, 10))
-    @test wrap(Array, mem, (5,)) == ones(Int, 5)
-    @test wrap(Array, mem, 2) == ones(Int, 2)
-    @test wrap(Array, memref, 10) == ones(Int, 10)
-    @test wrap(Array, memref, (2,2,2)) == ones(Int,2,2,2)
-    @test wrap(Array, mem, (5, 2)) == ones(Int, 5, 2)
-
-    memref2 = MemoryRef(mem, 3)
-    @test wrap(Array, memref2, (5,)) == ones(Int, 5)
-    @test wrap(Array, memref2, 2) == ones(Int, 2)
-    @test wrap(Array, memref2, (2,2,2)) == ones(Int,2,2,2)
-    @test wrap(Array, memref2, (3, 2)) == ones(Int, 3, 2)
-    @test_throws DimensionMismatch wrap(Array, memref2, 9)
-    @test_throws DimensionMismatch wrap(Array, memref2, 10)
+@testset "Wrapping Memory into Arrays with view and reshape" begin
+    mem::Memory{Int} = Memory{Int}(undef, 10) .= 11:20
+
+    @test_throws DimensionMismatch reshape(mem, 10, 10)
+    @test_throws DimensionMismatch reshape(mem, 5)
+    @test_throws BoundsError view(mem, 1:10, 1:10)
+    @test_throws BoundsError view(mem, 1:11)
+    @test_throws BoundsError view(mem, 3:11)
+    @test_throws BoundsError view(mem, 0:4)
+
+    @test @inferred(view(mem, 1:5))::Vector{Int} == 11:15
+    @test @inferred(view(mem, 1:2))::Vector{Int} == 11:12
+    @test @inferred(view(mem, 1:10))::Vector{Int} == 11:20
+    @test @inferred(view(mem, 3:8))::Vector{Int} == 13:18
+    @test @inferred(view(mem, 20:19))::Vector{Int} == []
+    @test @inferred(view(mem, -5:-7))::Vector{Int} == []
+    @test @inferred(reshape(mem, 5, 2))::Matrix{Int} == reshape(11:20, 5, 2)
+
+    # 53990
+    @test @inferred(view(mem, unsigned(1):10))::Vector{Int} == 11:20
+
+    empty_mem = Memory{Module}(undef, 0)
+    @test_throws BoundsError view(empty_mem, 0:1)
+    @test_throws BoundsError view(empty_mem, 1:2)
+    @test_throws DimensionMismatch reshape(empty_mem, 1)
+    @test_throws DimensionMismatch reshape(empty_mem, 1, 2, 3)
+    @test_throws ArgumentError reshape(empty_mem, 2^16, 2^16, 2^16, 2^16)
+
+    @test @inferred(view(empty_mem, 1:0))::Vector{Module} == []
+    @test @inferred(view(empty_mem, 10:3))::Vector{Module} == []
+    @test isempty(@inferred(reshape(empty_mem, 0, 7, 1))::Array{Module, 3})
+
+    offset_inds = OffsetArrays.IdOffsetRange(values=3:6, indices=53:56)
+    @test @inferred(view(collect(mem), offset_inds)) == view(mem, offset_inds)
 end
 
 @testset "Memory size" begin
diff --git a/test/core.jl b/test/core.jl
index 0eca2251cd146..b1af565c07d6a 100644
--- a/test/core.jl
+++ b/test/core.jl
@@ -5524,6 +5524,9 @@ let a = Base.StringVector(2^17)
     @test sizeof(c) == 0
 end
 
+# issue #53990 / https://github.com/JuliaLang/julia/pull/53896#discussion_r1555087951
+@test Base.StringVector(UInt64(2)) isa Vector{UInt8}
+
 @test_throws ArgumentError eltype(Bottom)
 
 # issue #16424, re-evaluating type definitions
diff --git a/test/relocatedepot.jl b/test/relocatedepot.jl
index b2a539ac330d3..039d422c35e25 100644
--- a/test/relocatedepot.jl
+++ b/test/relocatedepot.jl
@@ -17,10 +17,12 @@ function test_harness(@nospecialize(fn); empty_load_path=true, empty_depot_path=
     end
 end
 
-# We test relocation with three dummy pkgs:
-# - RelocationTestPkg1 - no include_dependency
-# - RelocationTestPkg2 - with include_dependency tracked by `mtime`
-# - RelocationTestPkg3 - with include_dependency tracked by content
+# We test relocation with these dummy pkgs:
+# - RelocationTestPkg1 - pkg with no include_dependency
+# - RelocationTestPkg2 - pkg with include_dependency tracked by `mtime`
+# - RelocationTestPkg3 - pkg with include_dependency tracked by content
+# - RelocationTestPkg4 - pkg with no dependencies; will be compiled such that the pkgimage is
+#                        not relocatable, but no repeated recompilation happens upon loading
 
 if !test_relocated_depot
 
@@ -78,8 +80,10 @@ if !test_relocated_depot
             cachefiles = Base.find_all_in_cache_path(pkg)
             rm.(cachefiles, force=true)
             @test Base.isprecompiled(pkg) == false
+            @test Base.isrelocatable(pkg) == false # because not precompiled
             Base.require(pkg)
             @test Base.isprecompiled(pkg, ignore_loaded=true) == true
+            @test Base.isrelocatable(pkg) == true
         end
     end
 
@@ -93,10 +97,12 @@ if !test_relocated_depot
             rm.(cachefiles, force=true)
             rm(joinpath(@__DIR__, pkgname, "src", "foodir"), force=true, recursive=true)
             @test Base.isprecompiled(pkg) == false
+            @test Base.isrelocatable(pkg) == false # because not precompiled
             touch(joinpath(@__DIR__, pkgname, "src", "foo.txt"))
             mkdir(joinpath(@__DIR__, pkgname, "src", "foodir"))
             Base.require(pkg)
             @test Base.isprecompiled(pkg, ignore_loaded=true) == true
+            @test Base.isrelocatable(pkg) == false # because tracked by mtime
         end
     end
 
@@ -110,10 +116,33 @@ if !test_relocated_depot
             rm.(cachefiles, force=true)
             rm(joinpath(@__DIR__, pkgname, "src", "bardir"), force=true, recursive=true)
             @test Base.isprecompiled(pkg) == false
+            @test Base.isrelocatable(pkg) == false # because not precompiled
             touch(joinpath(@__DIR__, pkgname, "src", "bar.txt"))
             mkdir(joinpath(@__DIR__, pkgname, "src", "bardir"))
             Base.require(pkg)
             @test Base.isprecompiled(pkg, ignore_loaded=true) == true
+            @test Base.isrelocatable(pkg) == true
+        end
+    end
+
+    @testset "precompile RelocationTestPkg4" begin
+        # test for #52346 and https://github.com/JuliaLang/julia/issues/53859#issuecomment-2027352004
+        # If a pkgimage is not relocatable, no repeated precompilation should occur.
+        pkgname = "RelocationTestPkg4"
+        test_harness(empty_depot_path=false) do
+            push!(LOAD_PATH, @__DIR__)
+            # skip this dir to make the pkgimage not relocatable
+            filter!(DEPOT_PATH) do depot
+                !startswith(@__DIR__, depot)
+            end
+            pkg = Base.identify_package(pkgname)
+            cachefiles = Base.find_all_in_cache_path(pkg)
+            rm.(cachefiles, force=true)
+            @test Base.isprecompiled(pkg) == false
+            @test Base.isrelocatable(pkg) == false # because not precompiled
+            Base.require(pkg)
+            @test Base.isprecompiled(pkg, ignore_loaded=true) == true
+            @test Base.isrelocatable(pkg) == false
         end
     end
 
@@ -202,6 +231,7 @@ else
             # stdlib should be already precompiled
             pkg = Base.identify_package("DelimitedFiles")
             @test Base.isprecompiled(pkg) == true
+            @test Base.isrelocatable(pkg) == true
         end
     end
 
@@ -213,6 +243,7 @@ else
             push!(DEPOT_PATH, joinpath(@__DIR__, "relocatedepot", "julia")) # contains cache file
             pkg = Base.identify_package(pkgname)
             @test Base.isprecompiled(pkg) == true
+            @test Base.isrelocatable(pkg) == true
         end
     end
 
@@ -224,10 +255,13 @@ else
             push!(DEPOT_PATH, joinpath(@__DIR__, "relocatedepot", "julia")) # contains cache file
             pkg = Base.identify_package(pkgname)
             @test Base.isprecompiled(pkg) == false # moving depot changes mtime of include_dependency
+            @test Base.isrelocatable(pkg) == false # because not precompiled
             Base.require(pkg)
             @test Base.isprecompiled(pkg) == true
+            @test Base.isrelocatable(pkg) == false # because tracked by mtime
             touch(joinpath(@__DIR__, "relocatedepot", "RelocationTestPkg2", "src", "foodir", "foofoo"))
             @test Base.isprecompiled(pkg) == false
+            @test Base.isrelocatable(pkg) == false # because tracked by mtime
         end
     end
 
@@ -235,12 +269,27 @@ else
         pkgname = "RelocationTestPkg3"
         test_harness() do
             push!(LOAD_PATH, joinpath(@__DIR__, "relocatedepot"))
-            push!(DEPOT_PATH, joinpath(@__DIR__, "relocatedepot"))
+            push!(DEPOT_PATH, joinpath(@__DIR__, "relocatedepot")) # required to find src files
             push!(DEPOT_PATH, joinpath(@__DIR__, "relocatedepot", "julia")) # contains cache file
             pkg = Base.identify_package(pkgname)
             @test Base.isprecompiled(pkg) == true
+            @test Base.isrelocatable(pkg) == true
             touch(joinpath(@__DIR__, "relocatedepot", "RelocationTestPkg3", "src", "bardir", "barbar"))
             @test Base.isprecompiled(pkg) == false
+            @test Base.isrelocatable(pkg) == false # because not precompiled
+        end
+    end
+
+    @testset "load RelocationTestPkg4 from test/relocatedepot" begin
+        pkgname = "RelocationTestPkg4"
+        test_harness() do
+            push!(LOAD_PATH, @__DIR__, "relocatedepot")
+            push!(DEPOT_PATH, joinpath(@__DIR__, "relocatedepot")) # required to find src files
+            push!(DEPOT_PATH, joinpath(@__DIR__, "relocatedepot", "julia")) # contains cache file
+            pkg = Base.identify_package(pkgname)
+            # precompiled but not relocatable
+            @test Base.isprecompiled(pkg) == true
+            @test Base.isrelocatable(pkg) == false
         end
     end
 
diff --git a/test/subarray.jl b/test/subarray.jl
index 0606ed00e6a7a..31bd69cccb5ae 100644
--- a/test/subarray.jl
+++ b/test/subarray.jl
@@ -1055,4 +1055,48 @@ end
         @test !isassigned(v, 1, 2) # inbounds but not assigned
         @test !isassigned(v, 3, 3) # out-of-bounds
     end
+
+    @testset "_unsetindex!" begin
+        function test_unsetindex(A, B)
+            copyto!(A, B)
+            for i in eachindex(A)
+                @test !isassigned(A, i)
+            end
+            inds = eachindex(A)
+            @test_throws BoundsError Base._unsetindex!(A, last(inds) + oneunit(eltype(inds)))
+        end
+        @testset "dest IndexLinear, src IndexLinear" begin
+            for p in (fill(BigInt(2)), BigInt[1, 2], BigInt[1 2; 3 4])
+                A = view(copy(p), ntuple(_->:, ndims(p))...)
+                B = view(similar(A), ntuple(_->:, ndims(p))...)
+                test_unsetindex(A, B)
+                test_unsetindex(p, B)
+            end
+        end
+
+        @testset "dest IndexLinear, src IndexCartesian" begin
+            for p in (fill(BigInt(2)), BigInt[1, 2], BigInt[1 2; 3 4])
+                A = view(copy(p), ntuple(_->:, ndims(p))...)
+                B = view(similar(A), axes(A)...)
+                test_unsetindex(A, B)
+                test_unsetindex(p, B)
+            end
+        end
+
+        @testset "dest IndexCartesian, src IndexLinear" begin
+            for p in (fill(BigInt(2)), BigInt[1, 2], BigInt[1 2; 3 4])
+                A = view(p, axes(p)...)
+                B = similar(A)
+                test_unsetindex(A, B)
+            end
+        end
+
+        @testset "dest IndexCartesian, src IndexCartesian" begin
+            for p in (fill(BigInt(2)), BigInt[1, 2], BigInt[1 2; 3 4])
+                A = view(p, axes(p)...)
+                B = view(similar(A), axes(A)...)
+                test_unsetindex(A, B)
+            end
+        end
+    end
 end