Julia <=1.8.5 fails to compile with GCC 13

[xgqt]

The blame is on the very outdated LLVM 13 version that Julia 1.8.5 bundles.

Please see the Gentoo bug report for more info: https://bugs.gentoo.org/895710

In file included from /var/tmp/portage/dev-lang/julia-1.8.3-r4/work/julia-1.8.3/deps/srccache/llvm-julia-13.0.1-3/llvm/lib/Support/Signals.cpp:14:
/var/tmp/portage/dev-lang/julia-1.8.3-r4/work/julia-1.8.3/deps/srccache/llvm-julia-13.0.1-3/llvm/include/llvm/Support/Signals.h:119:8: error: variable or field 'CleanupOnSignal' declared void
  119 |   void CleanupOnSignal(uintptr_t Context);
      |        ^~~~~~~~~~~~~~~
/var/tmp/portage/dev-lang/julia-1.8.3-r4/work/julia-1.8.3/deps/srccache/llvm-julia-13.0.1-3/llvm/include/llvm/Support/Signals.h:119:24: error: 'uintptr_t' was not declared in this scope
  119 |   void CleanupOnSignal(uintptr_t Context);
      |                        ^~~~~~~~~
/var/tmp/portage/dev-lang/julia-1.8.3-r4/work/julia-1.8.3/deps/srccache/llvm-julia-13.0.1-3/llvm/include/llvm/Support/Signals.h:18:1: note: 'uintptr_t' is defined in header '<cstdint>'; did you forget to '#include <cstdint>'?
   17 | #include <string>
  +++ |+#include <cstdint>
   18 | 

and

In file included from /var/tmp/portage/dev-lang/julia-1.8.3-r4/work/julia-1.8.3/deps/srccache/llvm-julia-13.0.1-3/llvm/lib/Support/Signals.cpp:251:
/var/tmp/portage/dev-lang/julia-1.8.3-r4/work/julia-1.8.3/deps/srccache/llvm-julia-13.0.1-3/llvm/lib/Support/Unix/Signals.inc:348:44: error: 'void llvm::sys::CleanupOnSignal(uintptr_t)' should have been declared inside 'llvm::sys'
  348 | void sys::CleanupOnSignal(uintptr_t Context) {
      |                                            ^

[inkydragon]

Julia's CI is still using GCC9 on most platforms, except for using GCC 12 on Windows.

https://github.com/JuliaCI/rootfs-images/blob/939120f806e3e5f39d1a43e29ebceea052b6d0b7/linux/package_linux.jl#L62

    curl -fL $(repo_release_url)/GCC.v9.1.0.$(host_triplet)-$(cross_tags).tar.gz | tar zx

[vchuravy]

very outdated LLVM 13

Released in Feb 2022, Julia 1.8 came out in August 2022.

Julia versions and LLVM versions are tightly matched so while it might seem like LLVM is outdated it is like saying that Clang 16 should be able to use LLVM 13.

[xgqt]

This bug is already fixed on master by a fellow (retired) Gentoo dev :) See: JuliaLang/llvm-project@ff1681d
I do want to ask however: Why only GCC 9?