gcc/testsuite/gcc.dg/diag-aka-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-Wc++-compat" } */
   3
   4 typedef struct A { int i; } B;
   5 typedef struct T { int i; } T;
   6 typedef const float TFA;
   7 typedef TFA TFB;
   8 typedef TFB TFC;
   9 typedef int IA[];
  10 typedef IA *IAP;
  11 extern IAP arr[];
  12
  13 void fn1 (B *); /* { dg-message "expected .B \\* {aka struct A \\*}. but argument is of type .struct B \\*." } */
  14 void fn2 (TFC *);
  15
  16 void
  17 bar (B *b, int *i)
  18 {
  19   fn1 ((struct B *) b); /* { dg-warning "passing argument" } */
  20   fn2 (i); /* { dg-warning "passing argument" } */
  21   sizeof (arr); /* { dg-error "invalid application of .sizeof. to incomplete type .int \\(\\*\\\[\\\]\\)\\\[\\\]." } */
  22 }
  23
  24 int
  25 foo (void *a)
  26 {
  27   T *t = a; /* { dg-warning "request for implicit conversion from .void \\*. to .T \\* {aka struct T \\*}. not" } */
  28   return t->i;
  29 }