https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85443
Bug ID: 85443 Summary: internal compiler error: Segmentation fault Product: gcc Version: 5.5.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c Assignee: unassigned at gcc dot gnu.org Reporter: xvl5190 at psu dot edu Target Milestone: --- This is the code that triggers the crash: char acDummy[0xf0] __attribute__ ((__BELOW100__)); unsigned short B100 __attribute__ ((__BELOW100__)); unsigned short *p = &B100; unsigned short wData = 0x1234; _Atomic int i = 3; int a1 = sizeof (i + 1); void Do (void) { B100 = wData; } int main (void) { *p = 0x9876; Do (); return (*p == 0x1234) ? 0 : 1; }