gcc/testsuite/gcc.dg/uninit-pr89230-1.c

   1 /* PR middle-end/89230 - Bogus uninited usage warning with printf
   2    { dg-do compile }
   3    { dg-options "-O2 -Wall" } */
   4
   5 struct S { int i, j; };
   6
   7 /* attribute__ ((malloc)) */ struct S* f (void);
   8
   9 int g (void)
  10 {
  11   struct S *p = f ();
  12   struct S *q; // { dg-bogus "" "uninitialized" { xfail *-*-* } }
  13
  14   if (p->i || !(q = f ()) || p->j != q->i)
  15    {
  16      __builtin_printf ("%i", p->i);
  17
  18      if (p->i)
  19        return 1;
  20
  21      if (!q)        // { dg-bogus "\\\[-Wmaybe-uninitialized" "" { xfail *-*-* } }
  22        return 2;
  23    }
  24
  25   return 0;
  26 }