New subject: [Bug 40385] usp10:usp10 regression caused by new cross-compiler

30 Mar 2016


      https://bugs.winehq.org/show_bug.cgi?id=40385
Bug ID: 40385
           Summary: usp10:usp10 regression caused by new cross-compiler
           Product: Wine
           Version: 1.9.6
          Hardware: x86
                OS: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: usp10
          Assignee: wine-bugs@winehq.org
          Reporter: fgouget@codeweavers.com
The WineHQ upgrade changed the cross-compiler used to generate the reference
WineTest executables. Since the upgrade the usp10:usp10 64 bit test has this
failure on Windows Vista to Windows 10:
usp10.c:3087: Test failed: ScriptStringCPtoX should return E_INVALIDARG not
00000000
See:
https://test.winehq.org/data/tests/usp10:usp10.html
https://www.winehq.org/pipermail/wine-devel/2016-March/112371.html
I can reproduce the problem with this compiler:
$ i686-w64-mingw32-gcc --version
i686-w64-mingw32-gcc (GCC) 5.3.1 20160205
But if I recompile the tests with -O0 the failures go away which points to a
compiler bug.
We need to either:
* Switch to a non buggy compiler to build the reference WineTest executables.
  (which might involve reporting the bug in the first place)
* Add 'CFLAGS = -g -O0' to the test's Makefile.in as a workaround.
  (preferably once we can point to a relevant compiler bug)
* Find some other nicer workaround in the C file.
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[Bug 40385] New: usp10:usp10 regression caused by new cross-compiler