gcc/testsuite/gcc.dg/uninit-pred-7_c.c

   1
   2 /* { dg-do compile } */
   3 /* { dg-options "-Wuninitialized -O2" } */
   4
   5 int g;
   6 void bar();
   7 void blah(int);
   8
   9 int foo (int n, int l, int m, int r)
  10 {
  11   int v;
  12
  13   if (n)
  14     v = r;
  15
  16   if (m) g++;
  17   else   bar();
  18
  19   if (n )
  20     {
  21       if (l)
  22         g++;
  23       else
  24         goto l;
  25     }
  26   else
  27     {
  28 l:
  29       blah (v); /* { dg-warning "uninitialized" "warning" } */
  30     }
  31
  32   return 0;
  33 }