http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58011
Bug ID: 58011 Summary: GCC segfaults at -O1 Product: gcc Version: 4.9.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization Assignee: unassigned at gcc dot gnu.org Reporter: antoine.balestrat at gmail dot com Using GCC 4.9.0 as of 20130728 : $ cat seg.c int a, b; void f(unsigned p) { unsigned *pp = &p; if(!a) p = 0; for(b = 0; b < 1; b++) if(3 * p + 5 * *pp) a = 0; } $ xgcc -O1 seg.c seg.c: In function âfâ: seg.c:3:6: internal compiler error: Segmentation fault void f(unsigned p) ^ Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions.