[Bug 2682] New: PrgWin Fifth Edition - PoePoem.c - Unhandled Page Fault
Wine Bugs
wine-bugs at winehq.org
Fri Jan 28 15:12:32 CST 2005
http://bugs.winehq.org/show_bug.cgi?id=2682
Summary: PrgWin Fifth Edition - PoePoem.c - Unhandled Page Fault
Product: Wine
Version: 20010112
Platform: PC
OS/Version: Linux
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: wine-programs
AssignedTo: wine-bugs at winehq.org
ReportedBy: ikrakow_1999 at yahoo.com
Petzold Chapter 10 - PoePoem.c - produces the following message:
"Exception raised"
"Unhandled page fault on write access to 0x56ae117a at address 0x56ae0692. Do
you wish to debug it?" If you answer Yes, program enters Winedbg, with an
"Unhandled exception (thread 0009), starting debugger)" message.
The text of the poem is a locked resource. There's a pointer (*pText) to the
locked resource. The program bombs on the following line:
*pText = '\0';
If this line is commented out, the program runs fine, displaying the poem in the
window. Below is a diff -C 10 output to show the context:
*** PoePoemHasBug.c 2005-01-28 15:48:22.753580008 -0500
--- PoePoemRunsOk.c 2005-01-28 15:48:22.753580008 -0500
***************
*** 98,118 ****
pText = (char *) LockResource (hResource) ;
iNumLines = 0 ;
while (*pText != '\\' && *pText != '\0')
{
if (*pText == '\n')
iNumLines ++ ;
pText = AnsiNext (pText) ;
}
! *pText = '\0' ;
SetScrollRange (hScroll, SB_CTL, 0, iNumLines, FALSE) ;
SetScrollPos (hScroll, SB_CTL, 0, FALSE) ;
return 0 ;
case WM_SIZE :
MoveWindow (hScroll, LOWORD (lParam) - xScroll, 0,
xScroll, cyClient = HIWORD (lParam), TRUE) ;
SetFocus (hwnd) ;
return 0 ;
--- 98,118 ----
pText = (char *) LockResource (hResource) ;
iNumLines = 0 ;
while (*pText != '\\' && *pText != '\0')
{
if (*pText == '\n')
iNumLines ++ ;
pText = AnsiNext (pText) ;
}
! // *pText = '\0' ;
SetScrollRange (hScroll, SB_CTL, 0, iNumLines, FALSE) ;
SetScrollPos (hScroll, SB_CTL, 0, FALSE) ;
return 0 ;
case WM_SIZE :
MoveWindow (hScroll, LOWORD (lParam) - xScroll, 0,
xScroll, cyClient = HIWORD (lParam), TRUE) ;
SetFocus (hwnd) ;
return 0 ;
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