http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46086
--- Comment #13 from Anton Shterenlikht <mexas at bristol dot ac.uk> 2010-12-25 09:21:48 UTC --- I switched back to the default system compiler: gcc (GCC) 4.2.1 20070719 [FreeBSD] now GMP passes all tests, gcc45 is built fine, and I can build and run lapack fine. No idea what happened in the meantime, as I surely started from the system compiler in the first place. Perhaps something changed in GMP in the meantime. Anyway, please close this bug report. thanks anton