On Mon, Oct 29, 2007 at 08:37:52PM +0100, Duncan Sands wrote: > Hi Tomash, > > > moonlight:/tmp$ /usr/local/gcc-4.3-trunk/bin/gcc -O0 mmap.c -o mmap > > moonlight:/tmp$ ./mmap > > GCC is the best compiler ever! > > moonlight:/tmp$ /usr/local/gcc-4.3-trunk/bin/gcc -O1 mmap.c -o mmap > > moonlight:/tmp$ ./mmap > > Segmentation fault > > I don't see this with gcc 4.1 or 4.2. Just a data point.
I tried this and didn't see any problems with 4.1.1 20070105 and 4.3.0 20070907 (Linux/amd64) with or without optimization (-O0, -O2, -O2 -ftree-vectorize). I thought the relevant optimization pass went in to gcc 3.4? -Jack
