http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58472
--- Comment #6 from vincenzo Innocente <vincenzo.innocente at cern dot ch> --- seems so gcc -O2 libgomp/testsuite/libgomp.c/simd-4.c -fopenmp c++ -O2 -S omp4red.cc -fopenmp| cat omp4red.s .text .align 4,0x90 .globl __Z5sumO1v __Z5sumO1v: LFB0: etc could you please send me your ./configure I do not understand why it crashes on me both on Linux and MacOS mine are in the previous comments…