-O2 bug in gcc 3.2, 3.3 and 3.4 with 64 bit integers on x86

[Andreas Schwab]

Anders Torger <torger@ludd.luth.se> writes:

> unsigned long
> hash(void *key)
> {
>     unsigned long long ull;
>     ull = *(unsigned long long *)key;
>     return ((unsigned long *)&ull)[0] ^ ((unsigned long *)&ull)[1];

Try -Wstrict-aliasing.

Andreas.

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Andreas Schwab, SuSE Labs, schwab@suse.de
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