[Bug 49755] New: Invalid write of size 4 - in signal_start_thread (unix/signal_i386.c)

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=49755

            Bug ID: 49755
           Summary: Invalid write of size 4 - in signal_start_thread
                    (unix/signal_i386.c)
           Product: Wine
           Version: 5.16
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: ntdll
          Assignee: wine-bugs at winehq.org
          Reporter: jeffersoncarpenter2 at gmail.com
      Distribution: ---

Created attachment 68059
  --> https://bugs.winehq.org/attachment.cgi?id=68059
Valgrind output

Occurs as of 5bb27d1edb2.

Steps to reproduce:

* Build 'int main() { return 0; }' using i686-w64-mingw32-gcc.
* Run wine under valgrind (valgrind output attached).


Valgrind output snippet:

==9652== Invalid write of size 4
==9652==    at 0x4859FE1: ??? (signal_i386.c:2419)
==9652==    by 0xFEC94B57: ???
==9652==    by 0x7BC5B777: process_init (loader.c:4053)
==9652==    by 0x7BC5B7BD: __wine_set_unix_funcs (loader.c:4063)
==9652==    by 0x4846E72: start_main_thread (loader.c:1403)
==9652==    by 0x48470B1: __wine_main (loader.c:1668)
==9652==    by 0x7D0018E4: main (main.c:289)

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