[Bug 27367] New: widl: gcc warns about pointer mismatch when calling pfnFree
wine-bugs at winehq.org
wine-bugs at winehq.org
Thu Jun 2 04:45:35 CDT 2011
http://bugs.winehq.org/show_bug.cgi?id=27367
Summary: widl: gcc warns about pointer mismatch when calling
pfnFree
Product: Wine
Version: 1.3.21
Platform: x86-64
OS/Version: Linux
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: tools
AssignedTo: wine-bugs at winehq.org
ReportedBy: cerebro.alexiel at gmail.com
Created an attachment (id=34992)
--> (http://bugs.winehq.org/attachment.cgi?id=34992)
Patch that fixes the warning by adding a cast to void * when calling pfnFree
When compiling latest wine, I have the following warning :
../../tools/widl/widl -I../../../git-wine/dlls/actxprxy -I.
-I../../../git-wine/include -I../../include -D__WINESRC__ -DWINE_REGISTER_DLL
-DPROXY_DELEGATION -p -o actxprxy_shobjidl_p.c
../../../git-wine/dlls/actxprxy/actxprxy_shobjidl.idl
../../tools/widl/widl -I../../../git-wine/dlls/actxprxy -I.
-I../../../git-wine/include -I../../include -D__WINESRC__ -DWINE_REGISTER_DLL
-DPROXY_DELEGATION -h -o actxprxy_shobjidl.h
../../../git-wine/dlls/actxprxy/actxprxy_shobjidl.idl
gcc -c -I../../../git-wine/dlls/actxprxy -I. -I../../../git-wine/include
-I../../include -D__WINESRC__ -DWINE_REGISTER_DLL -DPROXY_DELEGATION
-D_REENTRANT -fPIC -Wall -pipe -fno-strict-aliasing
-Wdeclaration-after-statement -Wempty-body -Wstrict-prototypes -Wtype-limits
-Wwrite-strings -Wpointer-arith -Wlogical-op -g -O2 -U_FORTIFY_SOURCE
-D_FORTIFY_SOURCE=0 -o actxprxy_shobjidl_p.o actxprxy_shobjidl_p.c
actxprxy_shobjidl_p.c: In function ‘__finally_IFileDialog_SetFileTypes_Stub’:
actxprxy_shobjidl_p.c:94496:9: warning: passing argument 1 of
‘__frame->_StubMsg.pfnFree’ discards qualifiers from pointer target type
actxprxy_shobjidl_p.c:94496:9: note: expected ‘void *’ but argument is of type
‘const struct COMDLG_FILTERSPEC *’
The actxprxy_shobjidl_p.c file is generated by widl from include/shobjidl.idl.
I found 3 references for pfnFree in tools/widl/typegen.c so I added a (void *)
cast 3 times with more or less spaces.
It appears the relevant pfnFree is at typegen.c:3778.
I'm attaching a patch that made the warning disappear.
Can someone tell me if this is the right approach ?
Ideally, wine would compile without any warning whatever your compiler or
architecture is.
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