Bug#288739: gcc optimization bug

["Falk Hueffner" <falk@debian.org>]

Marco Fabbricatore <mfabb@dword.de>, 288739@bugs.debian.org schrieb am 05.01.05 14:08:32:

> Package: gcc
> Version: 2.95.4 20011002
> 
> following function compiled w/ gcc -O
> 
> int foo(unsigned int a)
> {
>     if(a * sizeof(int) / sizeof(int) != a)
>        return -1;
>     return 0;
> }
> 
> gcc optimizes the arithmetic overflow check away!

Indeed. This is fixed in the 3.x series. I suggest upgrading, since it seems unlikely
that somebody will find and backport the fix...

Falk