gcc/testsuite/gcc.dg/uninit-pr61677.c

   1 /* PR tree-optimization/61677 - False positive with -Wmaybe-uninitialized
   2    { dg-do compile }
   3    { dg-options "-O2 -Wall" } */
   4
   5 void *xmalloc (void);
   6
   7 struct menu { struct menu *parent; };
   8
   9 struct jump_key { int offset; };
  10
  11 void f (struct menu *menu)
  12 {
  13   int i;
  14   struct menu *submenu[8], *location;
  15   struct jump_key *jump;
  16   location = menu;
  17   for (i = 0; menu && i < 8; menu = menu->parent)
  18     submenu[i++] = menu;
  19   if (location)
  20     jump = xmalloc ();
  21   while (--i >= 0) {
  22     menu = submenu[i];
  23     if (location)
  24       jump->offset = 42;
  25   }
  26 }