[Bug 27468] QQ International crashes on attempted login

wine-bugs at winehq.org wine-bugs at winehq.org
Mon Feb 6 10:53:33 CST 2012


http://bugs.winehq.org/show_bug.cgi?id=27468

--- Comment #29 from Qian Hong <fracting at gmail.com> 2012-02-06 10:53:33 CST ---
(In reply to comment #28)
> Hello, retest with latest git:
> 
> This bug can be reproduced if wine is builded with CFLAGS="-O2" or
> CFLAGS="-O1", CFLAGS="-O2" is used by the Ubuntu packager. I can't reproduce
> the bug if wine is builded with CFLAGS="-O0"
> 
> wine-1.4-rc2

Hello, QQ.exe try to call call_hook_proc() function when clicking on the
password form, however, call_hook_proc in hook.c is missing when CFLAGS="-g
-O2"

--- snip ---
WineDbg starting on pid 0023
start_process () at /home/fracting/wine-git/dlls/kernel32/process.c:1083
0x7ed80e53 start_process+0x53
[/home/fracting/wine-git/dlls/kernel32/process.c:1083] in kernel32: movl   
%edi,0x4(%esp)
1083        return call_process_entry( peb, entry );
Wine-dbg>b call_hook_proc
fixme:dbghelp_dwarf:dwarf2_parse_variable Unsupported constant (parameter)
pEncodePara in function
fixme:dbghelp_dwarf:dwarf2_parse_variable Unsupported constant (parameter)
dwFlags in function
fixme:dbghelp_dwarf:compute_location Unhandled attr op: 9d
fixme:dbghelp_dwarf:compute_location Unhandled attr op: 9d
fixme:dbghelp_dwarf:compute_location Unhandled attr op: 9e
fixme:dbghelp_dwarf:compute_location Unhandled attr op: 9e
fixme:dbghelp_dwarf:compute_location Only supporting one reg (edi/24 -> -2)
No symbols found for call_hook_proc
Unable to add breakpoint, will check again when a new DLL is loaded
--- snip ---

A dirty workaround is removing the "static" before call_hook_proc, another way
of workaround is adding below line in the call_hook() function:
TRACE("call_hook_proc is %p\n", call_hook_proc);

With any of the workaround, I can get the call_hook_proc symbol in winedbg
again, and the crash disappear.

I don't have enough knowledge to fix this bug, is it a bug of winegcc or a bug
of hook.c? Great appreciating if anyone take this bug :)

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