[Bug 25310] New: Bugs in RtlUnwindEx
wine-bugs at winehq.org
wine-bugs at winehq.org
Fri Nov 26 15:50:17 CST 2010
http://bugs.winehq.org/show_bug.cgi?id=25310
Summary: Bugs in RtlUnwindEx
Product: Wine
Version: unspecified
Platform: x86-64
OS/Version: Linux
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: ntdll
AssignedTo: wine-bugs at winehq.org
ReportedBy: mkoegler at auto.tuwien.ac.at
MSDN (http://msdn.microsoft.com/en-us/library/ms680615(VS.85).aspx) describes
the passed context as scratch-space, not something that the application has to
initialize. The wine implemetation expect a valid context.
Looking at the debug output, it is also clearly visible, that the wine
implementation unwinds the stack pointer one stack frame to far.
The attached patch fixes these problems:
* RtlUnwindEx is called via DEFINE_REGS_ENTRYPOINT and the new context is used
as starting point.
* Stay at the same context, if the target stack frame has been reached.
There have been more infomation about the internal of RtlUnwindEx published:
http://www.nynaeve.net/?p=113
The patch make RtlUnwindEx more compilant with this description - it is still
incomplete.
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