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From: | Richard Kenner |
Subject: | Re: changing "configure" to default to "gcc -g -O2 -fwrapv ..." |
Date: | Sun, 31 Dec 2006 09:03:17 EST |
> And I doubt that GCC (or any compiler) could reliably detect code > that checks for overflow. It doesn't need to "detect" all such code: all it needs to do is ensure that it doesn't BREAK such code. And that's a far easier condition: you just have to avoid folding a condition into TRUE or FALSE based on assumptions about overflow.
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