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From: "sebunger44 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/113183] New: LTO crashes with Segmentation fault
Date: Sat, 30 Dec 2023 19:35:57 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D113183

            Bug ID: 113183
           Summary: LTO crashes with Segmentation fault
           Product: gcc
           Version: 13.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: lto
          Assignee: unassigned at gcc dot gnu.org
          Reporter: sebunger44 at gmail dot com
                CC: marxin at gcc dot gnu.org
  Target Milestone: ---

Created attachment 56968
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D56968&action=3Dedit
Contains the LD and CPP files

I'm in the process of creating a tool-chain and porting FreeRTOS to our Leo=
n2
based platform and ran into this with GCC 13.2. However, after reducing it =
to a
near trivial example, I can now also reproduce it on GCC 11.4 as shipped by
Ubuntu  22.04. So it probably has nothing to do with how I compiled my GCC =
etc.

Output:

$ gcc -nostartfiles -O2 -flto -T link.ld tt.cpp -o tt
=E2=80=98
Segmentation fault
0x7f23ac64251f ???
        ./signal/../sysdeps/unix/sysv/linux/x86_64/libc_sigaction.c:0
0x7f23ac629d8f __libc_start_call_main
        ../sysdeps/nptl/libc_start_call_main.h:58
0x7f23ac629e3f __libc_start_main_impl
        ../csu/libc-start.c:392
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <file:///usr/share/doc/gcc-11/README.Bugs> for instructions.
lto-wrapper: fatal error: gcc returned 1 exit status
compilation terminated.
/usr/bin/ld: error: lto-wrapper failed
collect2: error: ld returned 1 exit status

Note that I do not expect this example to run in any way. I have cut out all
the target specific stuff so only plain old C++ remained.=