[haiku-bugs] Re: [Haiku] #7736: Browsing back to a rotated image crashes ShowImage
- From: "Janus" <trac@xxxxxxxxxxxx>
- Date: Mon, 17 Dec 2012 06:40:23 -0000
#7736: Browsing back to a rotated image crashes ShowImage
--------------------------------------+----------------------------
Reporter: humdinger | Owner: leavengood
Type: bug | Status: new
Priority: normal | Milestone: R1
Component: Applications/ShowImage | Version: R1/Development
Resolution: | Keywords: GCI2011
Blocked By: | Blocking:
Has a Patch: 1 | Platform: All
--------------------------------------+----------------------------
Comment (by Janus):
A simple explanation...
If fBitmapOwner isn't set, the invocation of _DeleteBitmap deletes fBitmap
instead of releasing the reference (fBitmapOwner).
{{{
void
ShowImageView::_DeleteBitmap()
{
_DeleteSelectionBitmap();
if (fDisplayBitmap != fBitmap)
delete fDisplayBitmap;
fDisplayBitmap = NULL;
if (fBitmapOwner != NULL)
fBitmapOwner->ReleaseReference();
else{
delete fBitmap;
}
fBitmapOwner = NULL;
fBitmap = NULL;
}
}}}
After that you have an invalid pointer stored in ImageCache.
--
Ticket URL: <http://dev.haiku-os.org/ticket/7736#comment:9>
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