[Bug c/85443] New: internal compiler error: Segmentation fault

[xvl5190 at psu dot edu]

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;
}