gcc/testsuite/gcc.dg/uninit-pred-8_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 < 10 && m > 100  && r < 20 )
  14     v = r;
  15
  16   if (m) g++;
  17   else  bar();
  18
  19   if ( n <= 8 &&  m > 101  && r < 19 )
  20       blah(v); /* { dg-bogus "uninitialized" "bogus warning" } */
  21
  22   return 0;
  23 }
  24
  25 int foo_2 (int n, int l, int m, int r)
  26 {
  27   int v;
  28
  29   if (n < 10 && m > 100  && r < 20 )
  30     v = r;
  31
  32   if (m) g++;
  33   else  bar();
  34
  35   if ( n <= 8 &&  m > 99  && r < 19 )
  36       blah(v); /* { dg-warning "uninitialized" "warning" } */
  37
  38   return 0;
  39 }