[Bug 24241] New: Open file dialog triggers "Invalid free" Valgrind warning

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=24241

           Summary: Open file dialog triggers "Invalid free" Valgrind
                    warning
           Product: Wine
           Version: unspecified
          Platform: x86
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: shell32
        AssignedTo: wine-bugs at winehq.org
        ReportedBy: bart.vanassche at gmail.com


Occurred with a clone of the Wine git repository last updated on Monday August
30, 2010 + a patch that informs Valgrind about heap tail zones. The Valgrind
complaint below was triggered by the open file dialog (MFC CFileDialog) and
shows that Wine tries to free static memory (a static variable called emptyW):

Invalid free() / delete / delete[]
   at 0x476F851: do_VALGRIND_FREELIKE_BLOCK (wine.git/dlls/ntdll/heap.c:231)
   by 0x47727A5: RtlFreeHeap (wine.git/dlls/ntdll/heap.c:1778)
   by 0x509BB83: IMalloc_fnFree (wine.git/dlls/ole32/ifs.c:262)
   by 0x509C1D6: CoTaskMemFree (wine.git/dlls/ole32/ifs.c:411)
   by 0x4DEC027: StrRetToStrNW (wine.git/dlls/shell32/shellstring.c:99)
   by 0x4E0E67E: ShellView_OnNotify (wine.git/dlls/shell32/shlview.c:1432)
   by 0x4E0F735: ShellView_WndProc (wine.git/dlls/shell32/shlview.c:1684)
   by 0x4CB21E9: ??? (in /usr/lib/wine/user32.dll.so)
   by 0x4CB2873: call_window_proc (wine.git/dlls/user32/winproc.c:242)
   by 0x4CB4C2B: WINPROC_call_window (wine.git/dlls/user32/winproc.c:899)
   by 0x4C7B35C: call_window_proc (wine.git/dlls/user32/message.c:2201)
   by 0x4C80B42: send_message (wine.git/dlls/user32/message.c:3041)
   by 0x4C81063: SendMessageW (wine.git/dlls/user32/message.c:3164)
   by 0x4FABB7B: notify_hdr (wine.git/dlls/comctl32/listview.c:839)
   by 0x4FAD06C: notify_dispinfoT (wine.git/dlls/comctl32/listview.c:984)
   by 0x4FADD5C: LISTVIEW_GetItemT (wine.git/dlls/comctl32/listview.c:6613)
   by 0x4FADFA8: LISTVIEW_GetItemW (wine.git/dlls/comctl32/listview.c:1601)
   by 0x4FAF48C: LISTVIEW_DrawItem (wine.git/dlls/comctl32/listview.c:4459)
   by 0x4FB63D4: LISTVIEW_RefreshReport
(wine.git/dlls/comctl32/listview.c:4751)
   by 0x4FBAFDA: LISTVIEW_Refresh (wine.git/dlls/comctl32/listview.c:4998)
   by 0x4FBDB68: LISTVIEW_Paint (wine.git/dlls/comctl32/listview.c:10392)
   by 0x4FBDCC6: LISTVIEW_WMPaint (wine.git/dlls/comctl32/listview.c:10417)
   by 0x4FBF4CC: LISTVIEW_WindowProc (wine.git/dlls/comctl32/listview.c:11452)
   by 0x4CB21E9: ??? (in /usr/lib/wine/user32.dll.so)
   by 0x4CB2873: call_window_proc (wine.git/dlls/user32/winproc.c:242)
   by 0x4CB4C2B: WINPROC_call_window (wine.git/dlls/user32/winproc.c:899)
   by 0x4C7C0FD: DispatchMessageW (wine.git/dlls/user32/message.c:3709)
   by 0x4C4EAE1: IsDialogMessageW (wine.git/dlls/user32/dialog.c:1258)
   by 0x4C4EC43: DIALOG_DoDialogBox (wine.git/dlls/user32/dialog.c:812)
   by 0x4C509BD: DialogBoxIndirectParamAorW (wine.git/dlls/user32/dialog.c:877)
   by 0x4C50A51: DialogBoxIndirectParamA (wine.git/dlls/user32/dialog.c:887)
   by 0x92CDCD8: GetFileName95 (wine.git/dlls/comdlg32/filedlg.c:317)
 Address 0x4f7116c is 0 bytes inside data symbol "emptyW.55484"

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