Messages in this thread | | | From | Duncan Sands <> | Subject | Re: BUGed to death | Date | Tue, 15 Apr 2003 16:58:10 +0200 |
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> > No, I meant what happens if BUG() is non-trivial and BUG_ON is a no-op. > > I thought it might give an indication of whether time was being lost > > evaluating the condition (occurs with BUG and BUG_ON), or mispredicting > > the branch (only occurs with BUG). > > Mmmm. wouldn't that just optimise away the BUG_ONs, but not the BUGs ? > Which will tell you something, but I'm not sure anything interesting. > My impression is that if I do: > > if (foo) > do {} while (0); > > the compiler will just ditch the whole thing, and not evaluate foo. > I'll admit to not having checked that, but still ....
Good point. So much for trying to get info without converting a bunch of BUG's into BUG_ON's...
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