gcc/testsuite/gcc.dg/uninit-pred-9_b.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 (l > 100)
  20     if ( (n <= 9) &&  (m < 100)  && (r < 19) )
  21       blah(v); /* { dg-bogus "uninitialized" "bogus warning" } */
  22
  23   if ( (n <= 8) &&  (m < 99)  && (r < 19) )
  24       blah(v); /* { dg-bogus "uninitialized" "bogus warning" } */
  25
  26   return 0;
  27 }
  28
  29 int foo_2 (int n, int l, int m, int r)
  30 {
  31   int v;
  32
  33   if ( (n < 10) && (m != 100)  && (r < 20) )
  34     v = r;
  35
  36   if (m) g++;
  37   else  bar();
  38
  39   if (l > 100)
  40     if ( (n <= 8) &&  (m < 101)  && (r < 19) )
  41       blah(v); /* { dg-warning "uninitialized" "real warning" } */
  42
  43   return 0;
  44 }