https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117047
Bug ID: 117047
Summary: Segfault in gcc/jit/jit-playback.cc when compiling GNU
Emacs with Native Compilation
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: jit
Assignee: dmalcolm at gcc dot gnu.org
Reporter: dario.gjorgjevski at gmail dot com
Target Milestone: ---
GCC commit ff889b359
GNU Emacs commit 9ed82c2
When I attempt to compile GNU Emacs with `Native Compilation
<https://www.gnu.org/software/emacs/manual/html_node/elisp/Native-Compilation.html>_,
there is a segfault in gcc/jit/jit-playback.cc.
(lldb) run
Process 96017 launched: '/Volumes/src/emacs/src/bootstrap-emacs' (x86_64)
Process 96017 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS
(code=1, address=0x0)
frame #0: 0x0000000104ce7553
libgccjit.0.dylib`gcc::jit::wrapper_finalizer(ptr=0x0000000104777f50) at
jit-playback.cc:1900:22
1897 wrapper_finalizer (void *ptr)
1898 {
1899 playback::wrapper *wrapper = reinterpret_cast <playback::wrapper *>
(ptr);
-> 1900 wrapper->finalizer ();
1901 }
1902
1903 /* gcc::jit::playback::wrapper subclasses are GC-managed:
Target 0: (bootstrap-emacs) stopped.
(lldb) bt
* thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS
(code=1, address=0x0)
* frame #0: 0x0000000104ce7553
libgccjit.0.dylib`gcc::jit::wrapper_finalizer(ptr=0x0000000104777f50) at
jit-playback.cc:1900:22
frame #1: 0x0000000105acc827 libgccjit.0.dylib`ggc_collect(ggc_collect)
[inlined] finalizer::call(this=0x00007fca639372f8) const at ggc-page.cc:333:35
frame #2: 0x0000000105acc820 libgccjit.0.dylib`ggc_collect(ggc_collect) at
ggc-page.cc:1932:15
frame #3: 0x0000000105acc7c2
libgccjit.0.dylib`ggc_collect(mode=<unavailable>) at ggc-page.cc:2232:25
frame #4: 0x0000000105b8f767
libgccjit.0.dylib`cgraph_node::finalize_function(decl=0x0000000100c56c00,
no_collect=<unavailable>) at cgraphunit.cc:506:17
frame #5: 0x0000000104ce8f0e
libgccjit.0.dylib`gcc::jit::playback::function::postprocess(this=0x0000000100c25d70)
at jit-playback.cc:2111:38
frame #6: 0x0000000104cea49a
libgccjit.0.dylib`gcc::jit::playback::context::replay(this=0x00007ff7bfef6c30)
at jit-playback.cc:3455:22
frame #7: 0x0000000107adb9e0 libgccjit.0.dylib`global_options_set + 6400
frame #8: 0x00000001078ecfa0
libgccjit.0.dylib`hard_frame_pointer_adjustment + 24
frame #9: 0x0000000107adb9e0 libgccjit.0.dylib`global_options_set + 6400
The issue does not happen with the releases/gcc-14 branch -- commit be06962b3
in particular.
Any hints how to debug this further?
