http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56409
--- Comment #1 from Marcin Kasperski <Marcin.Kasperski at mekk dot waw.pl> 2013-02-20 14:38:49 UTC --- Rather unimportant, but let me note that attempt to compile python 2.6.8 fails the same way: ~~~~~~~~~~~~~~~~~~~ gcc -c -fno-strict-aliasing -g -O2 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I. -IInclude -I./Include -fPIC -DPy_BUILD_CORE -o Objects/longobject.o Objects/longobject.c init2.c:37: assertion failed: ((64 - 0)+0) == (((64 - 0)+0)/8) * 8 && sizeof(mp_limb_t) == (((64 - 0)+0)/8) Objects/longobject.c: In function ‘PyLong_FromString’: Objects/longobject.c:1611: internal compiler error: Abort Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions. ~~~~~~~~~~~~~~~~~~~