[Bug 49754] New: Invalid write of size 4 - while clearing thread stack

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=49754

Bug ID: 49754
           Summary: Invalid write of size 4 - while clearing thread stack
           Product: Wine
           Version: 5.16
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: ntdll
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 68058
  --> https://bugs.winehq.org/attachment.cgi?id=68058
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:

==9636== Invalid write of size 4
==9636==    at 0x7BC7AA17: ??? (signal_i386.c:470)
==9636==  Address 0x61bab0 is on thread 1's stack