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Re: gcc 3.3.3 is doing stupid shit
David Holland wrote:
On Sun, Feb 10, 2008 at 09:31:31AM +1100, Darren Reed wrote:
> Can anyone explain why gcc is doing what it is below?
> (gdb) print hlen
> $1 = 4448
Does slen (set to l3len - hlen) come out correct? Given that it's
inlined htons, I'm assuming you compiled with a nontrivial -O level,
so it shouldn't be surprising either that it optimized out a local
variable or that the debug info gives you misleading results which may
or may not reflect what's actually happening.
No, slen is wrong and that's the problem: the program later core
dumps beause it is wrong. The code was compiled with "-O", not
-O2 or -O3.
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