From 2fe5792c581fa027ef8f595b3488b616f22ba640 Mon Sep 17 00:00:00 2001
From: Ian Butterworth <i.r.butterworth@gmail.com>
Date: Thu, 8 Aug 2024 18:01:59 +0200
Subject: [PATCH 1/3] handle if the expected cache file is missing

---
 base/loading.jl | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/base/loading.jl b/base/loading.jl
index c273e4505701f..027af3942edce 100644
--- a/base/loading.jl
+++ b/base/loading.jl
@@ -3664,7 +3664,16 @@ end
                                           ignore_loaded::Bool=false, requested_flags::CacheFlags=CacheFlags(),
                                           reasons::Union{Dict{String,Int},Nothing}=nothing, stalecheck::Bool=true)
     # n.b.: this function does nearly all of the file validation, not just those checks related to stale, so the name is potentially unclear
-    io = open(cachefile, "r")
+    io = try
+        open(cachefile, "r")
+    catch e
+        if e isa SystemError && e.errno == ENOENT
+            @debug "Rejecting cache file $cachefile for $modkey because it does not exist"
+            return true
+        else
+            rethrow()
+        end
+    end
     try
         checksum = isvalid_cache_header(io)
         if iszero(checksum)

From ea8223bef23edeae8ed3748e8b7fddff9ca78a1b Mon Sep 17 00:00:00 2001
From: Ian Butterworth <i.r.butterworth@gmail.com>
Date: Thu, 8 Aug 2024 18:14:51 +0200
Subject: [PATCH 2/3] add test

---
 test/precompile.jl | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/test/precompile.jl b/test/precompile.jl
index 3241ee8b25a35..f45eb4bb1e79e 100644
--- a/test/precompile.jl
+++ b/test/precompile.jl
@@ -597,6 +597,10 @@ precompile_test_harness(false) do dir
     @test Base.invokelatest(Baz.baz) === 1
     @test Baz === UseBaz.Baz
 
+    # should not throw if the cachefile does not exist
+    @test !isfile("DoesNotExist.ji")
+    @test Base.stale_cachefile("", "DoesNotExist.ji") === true
+
     # Issue #12720
     FooBar1_file = joinpath(dir, "FooBar1.jl")
     write(FooBar1_file,

From af42455e9ce733b6cf377c9f2a21b6ae80f73a72 Mon Sep 17 00:00:00 2001
From: Ian Butterworth <i.r.butterworth@gmail.com>
Date: Thu, 8 Aug 2024 19:53:13 +0200
Subject: [PATCH 3/3] fix

---
 base/loading.jl | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/base/loading.jl b/base/loading.jl
index 027af3942edce..3eca91613b4e5 100644
--- a/base/loading.jl
+++ b/base/loading.jl
@@ -3666,13 +3666,10 @@ end
     # n.b.: this function does nearly all of the file validation, not just those checks related to stale, so the name is potentially unclear
     io = try
         open(cachefile, "r")
-    catch e
-        if e isa SystemError && e.errno == ENOENT
-            @debug "Rejecting cache file $cachefile for $modkey because it does not exist"
-            return true
-        else
-            rethrow()
-        end
+    catch ex
+        ex isa IOError || ex isa SystemError || rethrow()
+        @debug "Rejecting cache file $cachefile for $modkey because it could not be opened" isfile(cachefile)
+        return true
     end
     try
         checksum = isvalid_cache_header(io)