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Trapping on overflowTrapping on overflowPosted Feb 28, 2008 21:23 UTC (Thu) by anton (guest, #25547)In reply to: Trapping on overflow by giraffedata Parent article: vmsplice(): the making of a local root exploit Apart from asm statements and modifying gcc I don't know of a way to get gcc or other compilers to use the trapping instructions for C code. Concerning "no arithmetic in here is supposed to wrap around", unsigned arithmetic is supposed to wrap around in standard C, only signed arithmetic is allowed to trap (or do anything else) on overflow.
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