[ros-bugs] [Bug 1212] New: C++ Exceptions broken: __CxxFrameHandler

[ReactOS.Bugzilla at reactos.org]

http://www.reactos.org/bugzilla/show_bug.cgi?id=1212

           Summary: C++ Exceptions broken: __CxxFrameHandler
           Product: ReactOS
           Version: TRUNK
          Platform: x86 Hardware
        OS/Version: ReactOS
            Status: NEW
          Severity: normal
          Priority: P3
         Component: Win32
        AssignedTo: ros-bugs at reactos.org
        ReportedBy: w3seek at reactos.com
         QAContact: ros-bugs at reactos.org


__CxxFrameHandler in msvcrt.dll doesn't restore the eax register. An application
to exploit the bug (endless loop of exceptions) can be found here:
http://www.codeproject.com/tools/todolist2.asp

(lib\rtl\exception.c:29) RtlRaiseException(Status 005cfc2c)
(lib\rtl\exception.c:36) ExceptionAddress 7c8010a6
(./ntoskrnl/ke/exception.c:94) KiRaiseException
(lib\crt\wine\cppexcept.c:342) invalid frame magic e06d7363
(lib\crt\wine\cppexcept.c:342) invalid frame magic e06d7363
Unhandled exception
ExceptionCode:    e06d7363
Address:          7c8010a6   C:\ReactOS\system32\kernel32.dll
CS:EIP 1b:7c8010a6
DS 23 ES 23 FS 3b GS 0
EAX: 00000001   EBX: 005cfc2c   ECX: 005cf6a8
EDX: 00000023   EBP: 005cfc88   ESI: 005cf94c   ESP: 005cfc28
EDI: 005cfc2c   EFLAGS: 00000246
Frames:
   78000000+2abb       C:\ReactOS\system32\msvcrt.dll
     400000+5d023      C:\ToDoList.exe
     400000+5cf9b      C:\ToDoList.exe
     400000+415c0      C:\ToDoList.exe
   73dd0000+cf74       C:\ReactOS\system32\MFC42.DLL
   7c800000+1ec6b      C:\ReactOS\system32\kernel32.dll
(lib\crt\wine\cppexcept.c:342) invalid frame magic c0000027
(lib\crt\wine\cppexcept.c:342) invalid frame magic c0000027
Unhandled exception
ExceptionCode:    c0000005
Faulting Address:        5
Address:          780030da   C:\ReactOS\system32\msvcrt.dll
CS:EIP 1b:780030da
DS 23 ES 23 FS 3b GS 0
EAX: 00000001   EBX: 00000000   ECX: 0045cf84
EDX: 7c91e344   EBP: 005cf428   ESI: 00000000   ESP: 005cf428
EDI: 00000000   EFLAGS: 00000202
Frames:
   7c900000+1e330      C:\ReactOS\system32\ntdll.dll
   7c900000+1e304      C:\ReactOS\system32\ntdll.dll
   7c800000+2b9ab      C:\ReactOS\system32\kernel32.dll
   7c900000+1e330      C:\ReactOS\system32\ntdll.dll
   7c900000+1e304      C:\ReactOS\system32\ntdll.dll
   7c900000+822b       C:\ReactOS\system32\ntdll.dll
   78000000+2abb       C:\ReactOS\system32\msvcrt.dll
     400000+5d023      C:\ToDoList.exe
     400000+5cf9b      C:\ToDoList.exe
     400000+415c0      C:\ToDoList.exe
   73dd0000+cf74       C:\ReactOS\system32\MFC42.DLL
   7c800000+1ec6b      C:\ReactOS\system32\kernel32.dll
Unhandled exception
ExceptionCode:    c0000005
Faulting Address:        5
Address:          780030da   C:\ReactOS\system32\msvcrt.dll
CS:EIP 1b:780030da
DS 23 ES 23 FS 3b GS 0
EAX: 00000001   EBX: 00000000   ECX: 0045cf84
EDX: 7c91e344   EBP: 005cec2c   ESI: 00000000   ESP: 005cec2c
EDI: 00000000   EFLAGS: 00000202
Frames:
   7c900000+1e330      C:\ReactOS\system32\ntdll.dll
   7c900000+1e304      C:\ReactOS\system32\ntdll.dll
   7c800000+2b9ab      C:\ReactOS\system32\kernel32.dll
   7c900000+1e330      C:\ReactOS\system32\ntdll.dll
   7c900000+1e304      C:\ReactOS\system32\ntdll.dll
   7c900000+822b       C:\ReactOS\system32\ntdll.dll
   7c900000+1e330      C:\ReactOS\system32\ntdll.dll
   7c900000+1e304      C:\ReactOS\system32\ntdll.dll
   7c800000+2b9ab      C:\ReactOS\system32\kernel32.dll
   7c900000+1e330      C:\ReactOS\system32\ntdll.dll
   7c900000+1e304      C:\ReactOS\system32\ntdll.dll
   7c900000+822b       C:\ReactOS\system32\ntdll.dll
   78000000+2abb       C:\ReactOS\system32\msvcrt.dll
     400000+5d023      C:\ToDoList.exe
     400000+5cf9b      C:\ToDoList.exe
     400000+415c0      C:\ToDoList.exe
   73dd0000+cf74       C:\ReactOS\system32\MFC42.DLL
   7c800000+1ec6b      C:\ReactOS\system32\kernel32.dll

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