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Protect against division by zero. b=368427 r+sr=pavlov

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mats.palmgren%bredband.net 2007-02-08 13:52:25 +00:00
parent 3bc55d798e
commit 505d703399
1 changed files with 6 additions and 0 deletions
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6
gfx/src/thebes/nsThebesImage.h
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@ -124,6 +124,12 @@ protected:
return PR_FALSE;
}
// protect against division by zero - this really shouldn't happen
// if our consumers were well behaved, but they aren't (bug 368427)
if (NS_UNLIKELY(aHeight == 0)) {
return PR_FALSE;
}
// check to make sure we don't overflow a 32-bit
PRInt32 tmp = aWidth * aHeight;
if (NS_UNLIKELY(tmp / aHeight != aWidth)) {