[Bug 6399] Crash with debugging tools of Gameboy Advance emulator
"Visualboy Advance"
Wine Bugs
wine-bugs at winehq.org
Sun Oct 8 12:12:17 CDT 2006
http://bugs.winehq.org/show_bug.cgi?id=6399
mike at codeweavers.com changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed| |1
------- Additional Comments From mike at codeweavers.com 2006-08-10 12:12 -------
0009:CALL MFC42.5788(00000060) ret=004e79a0
trace:seh:raise_exception code=c0000005 flags=0 addr=0x6c3c01b3
MFC42.5788 is CPen *CDC::SelectObject(CPen *);
A bad pointer is being passed as a CPen, so the program is crashing.
The source for this project is available on SourceForge.
Examining the relay trace, it looks like the crash is at:
gba/VisualBoyAdvance-1.7/src/win32/ZoomControl.cpp #144
CPen pen;
pen.CreatePen(PS_SOLID, 1, RGB(192,192,192));
CPen *old = (CPen *)memDC.SelectObject(pen);
for(i = 0; i < 8; i++) {
memDC.MoveTo(0, i * multY);
memDC.LineTo(w, i * multY);
memDC.MoveTo(i * multX, 0);
memDC.LineTo(i * multX, h);
}
if(selected != -1) { <---- looks like this condition is false
CPen pen2;
pen2.CreatePen(PS_SOLID, 2, RGB(255, 0, 0));
CPen *old2 = (CPen*)memDC.SelectObject(&pen2);
int startX = (selected & 7)*multX+1;
int startY = (selected / 8)*multY+1;
int endX = startX + multX-2;
int endY = startY + multY-2;
memDC.MoveTo(startX, startY);
memDC.LineTo(endX, startY);
memDC.LineTo(endX, endY);
memDC.LineTo(startX, endY);
memDC.LineTo(startX, startY-1);
memDC.SelectObject(old2);
pen2.DeleteObject();
}
memDC.SelectObject(old); <----- looks like it crashes here.
pen.DeleteObject();
The relay trace for this section of code shows nothing obviously wrong, however
it seems the problem must be in something called here, as the variable "old" is
initialized at the top of the section...
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