gnu/dist/gcc4/gcc/testsuite/gcc.dg/transparent-union-1.c

   1 /* PR c/20043 */
   2 /* { dg-compile } */
   3 /* { dg-options "-std=gnu99" } */
   4
   5 extern void f0 (int *);
   6 extern void f0 (int *__restrict);
   7
   8 extern void f1 (int *__restrict);
   9 extern void f1 (int *);
  10
  11 typedef union { int *i; long *l; } U2
  12   __attribute__((transparent_union));
  13 extern void f2 (U2);
  14 extern void f2 (int *);
  15
  16 typedef union { int *__restrict i; long *__restrict l; } U3
  17   __attribute__((transparent_union));
  18 extern void f3 (U3);
  19 extern void f3 (int *__restrict);
  20
  21 extern void f4 (U3);
  22 extern void f4 (int *);
  23
  24 extern void f5 (U2);
  25 extern void f5 (int *__restrict);
  26
  27 typedef union { long *l; int *i; } U6
  28   __attribute__((transparent_union));
  29 extern void f6 (U6);
  30 extern void f6 (int *);
  31
  32 typedef union { long *__restrict l; int *__restrict i; } U7
  33   __attribute__((transparent_union));
  34 extern void f7 (U7);
  35 extern void f7 (int *__restrict);
  36
  37 extern void f8 (U7);
  38 extern void f8 (int *);
  39
  40 extern void f9 (U6);
  41 extern void f9 (int *__restrict);
  42
  43 extern void f10 (U2);
  44 extern void f11 (U3);
  45 extern void f12 (U6);
  46 extern void f13 (U7);
  47
  48 int i;
  49 long l;
  50
  51 int
  52 main (void)
  53 {
  54   f0 (&i);
  55   f0 (&l);      /* { dg-warning "warning: passing argument 1 of 'f0' from incompatible pointer type" } */
  56   f1 (&i);
  57   f1 (&l);      /* { dg-warning "warning: passing argument 1 of 'f1' from incompatible pointer type" } */
  58   f2 (&i);
  59   f2 (&l);      /* { dg-warning "warning: passing argument 1 of 'f2' from incompatible pointer type" } */
  60   f3 (&i);
  61   f3 (&l);      /* { dg-warning "warning: passing argument 1 of 'f3' from incompatible pointer type" } */
  62   f4 (&i);
  63   f4 (&l);      /* { dg-warning "warning: passing argument 1 of 'f4' from incompatible pointer type" } */
  64   f5 (&i);
  65   f5 (&l);      /* { dg-warning "warning: passing argument 1 of 'f5' from incompatible pointer type" } */
  66   f6 (&i);
  67   f6 (&l);      /* { dg-warning "warning: passing argument 1 of 'f6' from incompatible pointer type" } */
  68   f7 (&i);
  69   f7 (&l);      /* { dg-warning "warning: passing argument 1 of 'f7' from incompatible pointer type" } */
  70   f8 (&i);
  71   f8 (&l);      /* { dg-warning "warning: passing argument 1 of 'f8' from incompatible pointer type" } */
  72   f9 (&i);
  73   f9 (&l);      /* { dg-warning "warning: passing argument 1 of 'f9' from incompatible pointer type" } */
  74   f10 (&i);
  75   f10 (&l);
  76   f11 (&i);
  77   f11 (&l);
  78   f12 (&i);
  79   f12 (&l);
  80   f13 (&i);
  81   f13 (&l);
  82   return 0;
  83 }