gcc/testsuite/gcc.dg/misc-column.c

   1 /* { dg-options "-fshow-column -Wall -Wfloat-equal -pedantic" } */
   2
   3 int i, j;
   4 float a, b;
   5
   6 int *p;
   7 struct {
   8         int a;
   9         char b;
  10 } *q;
  11
  12 extern void bar();
  13
  14 void foo (void)
  15 {
  16   if (a == b) /* { dg-warning "9:comparing floating point with" } */
  17     bar ();
  18
  19   if (p < q) /* { dg-warning "9:comparison of distinct pointer types" } */
  20     bar ();
  21
  22   if (&p == 0) /* { dg-warning "10:comparison will always evaluate as 'false'" } */
  23     bar();
  24
  25   if (p == 4) /* { dg-warning "9:comparison between pointer and integer" } */
  26     bar();
  27
  28   if (p < 0) /* { dg-warning "9:ordered comparison of pointer with" } */
  29     bar();
  30
  31   -q;    /* { dg-error "3:wrong type argument to unary" } */
  32
  33   ~q;    /* { dg-error "3:wrong type argument to bit" } */
  34
  35   ++*q; /* { dg-error "3:wrong type argument to increment" } */
  36
  37   i = j / 0;  /* { dg-warning "9:division by zero" } */
  38
  39   i /= 0; /* { dg-warning "5:division by zero" } */
  40 }