[Bug tree-optimization/39120] New: [4.2/4.3/4.4 Regression] Missed escape constraints for call results

[rguenth at gcc dot gnu dot org]

struct X { int *p; } x;

struct X __attribute__((noinline))
foo(int *p) { struct X x; x.p = p; return x; }

void __attribute((noinline))
bar() { *x.p = 1; }

extern void abort (void);
int main()
{
  int i = 0;
  x = foo(&i);
  bar();
  if (i != 1)
    abort ();
  return 0;
}


-- 
           Summary: [4.2/4.3/4.4 Regression] Missed escape constraints for
                    call results
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Keywords: wrong-code, alias
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: rguenth at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39120