gcc/testsuite/gcc.dg/uninit-5.c

   1 /* Spurious uninitialized-variable warnings.
   2    These cases are documented as not working in the gcc manual. */
   3
   4 /* { dg-do compile } */
   5 /* { dg-options "-O -Wuninitialized" } */
   6
   7 extern void use(int);
   8 extern void foo(void);
   9
  10 void
  11 func1(int cond)
  12 {
  13     int x;  /* { dg-bogus "x" "uninitialized variable warning" { xfail *-*-* } } */
  14
  15     if(cond)
  16         x = 1;
  17
  18     foo();
  19
  20     if(cond)
  21         use(x);
  22 }
  23
  24 void
  25 func2 (int cond)
  26 {
  27     int x;  /* { dg-bogus "x" "uninitialized variable warning" { xfail *-*-* } } */
  28     int flag = 0;
  29
  30     if(cond)
  31     {
  32         x = 1;
  33         flag = 1;
  34     }
  35
  36     foo();
  37
  38     if(flag)
  39         use(x);
  40 }