[Bug 43871] New: Programs compiled with winegcc SEGFAULT if using __atribute__(( constructor)) gcc extension

https://bugs.winehq.org/show_bug.cgi?id=43871

Bug ID: 43871
           Summary: Programs compiled with winegcc SEGFAULT if using
                    __atribute__((constructor)) gcc extension
           Product: Wine
           Version: 2.18
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: tools
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 59472
  --> https://bugs.winehq.org/attachment.cgi?id=59472
minimal repro

Hi

When I try to compile an executable with winegcc, and the executable is using
__atribute__((constructor)) extension, the resulting executable SEGFAULT.

I attach a minimal code that is causing my issue (derived from the original
code that was giving the issue).

The wine stdout/stderr:
fixme:winediag:start_process Wine Staging 2.18 is a testing version containing
experimental patches.
fixme:winediag:start_process Please mention your exact version when filing bug
reports on winehq.org.
zsh: segmentation fault (core dumped)  ./main.exe

The executable was compiled with winegcc main.c -o main.exe -lws2_32

Thanks for the help

[Bug 43871] Programs compiled with winegcc SEGFAULT if using __attribute__ ((constructor)) gcc extension

https://bugs.winehq.org/show_bug.cgi?id=43871

Lorenzo Ferrillo  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Programs compiled with      |Programs compiled with
                   |winegcc SEGFAULT if using   |winegcc SEGFAULT if using
                   |__atribute__((constructor)) |__attribute__((constructor)
                   |gcc extension               |) gcc extension

[Bug 43871] Programs compiled with winegcc SEGFAULT if using __attribute__ ((constructor)) gcc extension

https://bugs.winehq.org/show_bug.cgi?id=43871

--- Comment #1 from Lorenzo Ferrillo  ---
Created attachment 59473
  --> https://bugs.winehq.org/attachment.cgi?id=59473
minimal repro 2

Another small piece of code that cause this ill beheviour.

Note that in this case the SEGFAULT happen only when compiling with -mno-cygwin
flag.
If not compiling using -mno-cygwin flag the program works.

[Bug 43871] Some Programs compiled with winegcc SEGFAULT if using __attribute__(( constructor)) gcc extension

https://bugs.winehq.org/show_bug.cgi?id=43871

Lorenzo Ferrillo  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Programs compiled with      |Some Programs compiled with
                   |winegcc SEGFAULT if using   |winegcc SEGFAULT if using
                   |__attribute__((constructor) |__attribute__((constructor)
                   |) gcc extension             |) gcc extension