https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69187
--- Comment #1 from Vladimir Smirnov <civil.over at gmail dot com> --- I've also tried to test gcc 6.0, snapshot 20160103 but still getting this: root@katje ~ # gcc-6.0.0-alpha20160103 -mfpu=neon ./bug.c ./bug.c: In function 'bug': ./bug.c:3:9: internal compiler error: Segmentation fault __builtin_neon_vmlals_lanev4hi(a, b, c, 0); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Please submit a full bug report, with preprocessed source if appropriate. See <https://bugs.gentoo.org/> for instructions.