Configuring with `./configure --cflags="-O3 -fno-caller-saves"' fixed the problem. So I guess it's a compiler problem. I'm using gcc 2.7.2.1 (which is the default compiler on FreeBSD 2.2.6). But I think newer versions of FreeBSD are also using this version of gcc. So, I'm afraid this might be a common situation. At the very least, there should be some mention about this in the MACHINES file. It would be even better if configure could detect this problem and add the necessary flag. -- Richard Coleman coleman(a)math.gatech.edu