[Bug 32725] New: VC runtime functions crash when called from reloaded library in a thread

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=32725

             Bug #: 32725
           Summary: VC runtime functions crash when called from reloaded
                    library in a thread
           Product: Wine
           Version: 1.3.24
          Platform: x86
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: msvcrt
        AssignedTo: wine-bugs at winehq.org
        ReportedBy: most at museresearch.com
    Classification: Unclassified


Created attachment 43181
  --> http://bugs.winehq.org/attachment.cgi?id=43181
msvcrt-dll-problem.zip

Assume WHAT.DLL is a windows DLL with static MSVCRT linkage. If WHAT.DLL is
unloaded and reloaded, it's C runtime functions like std::cout can crash when
called from a thread.

According to Piotr Caban (piotr dot caban at gmail dot com) "The crash is
caused by incomplete FlsFree implementation. There's a comment in it's code
that says what needs to be added:
/* FIXME: add equivalent of ThreadZeroTlsCell here */"

The crash is repeatable with the attached example winelib program (captain.exe)
and windows DLL (what.dll). Code for the compiled what.dll is included. An
included README file describes the contents. 'make test' demonstrates the
problem.

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