Hi. I compiled qhull [1] with the following versions:
gcc (GCC) 4.2.1 gcc (GCC) 4.3.0 20070906 (experimental) When compiled with -O it works: qhull/src$ make CFLAGS=-O -j > /dev/null; ./rbox 5 | ./qhull > /dev/null but if I qhull/src$ touch qset.c and recompile it with -O2 then qhull segfaults: qhull/src$ make CFLAGS=-O2 -j > /dev/null; ./rbox 5 | ./qhull Segmentation fault If I touch the file again and recompile with -O2, but with an older version of gcc gcc (GCC) 4.1.1 20070105 (Red Hat 4.1.1-52) it works again. [1] <http://www.qhull.org/download/qhull-2003.1.tar.gz> [2] sha1 of qset.c is cb61179b8dee6b36a8cdc4cba0a6fcc6383e1771 Yes, I read `What we do not want' section, but it seems a single file will be of no use. The bug repeats on different versions of Linux (both 2.4 and 2.6). -- Regards, ASK
