gcc/testsuite/gcc.dg/pr61162-2.c

   1 /* PR c/61162 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-Wc++-compat -Wpointer-sign -Wpedantic" } */
   4
   5 enum e { A };
   6 struct s { int a; };
   7
   8 enum e
   9 fn1 (void)
  10 {
  11   return 0; /* { dg-warning "10:enum conversion from 'int' to 'enum e' in return" } */
  12 }
  13
  14 int
  15 fn2 (struct s s)
  16 {
  17   return s; /* { dg-error "10:incompatible types when returning" } */
  18 }
  19
  20 void
  21 fn3 (void)
  22 {
  23   return 3; /* { dg-warning "10:in function returning void" } */
  24 }
  25
  26 int
  27 fn4 (int *a)
  28 {
  29   return a; /* { dg-warning "10:returning 'int \\*' from a function with return type 'int' makes integer from pointer without a cast" } */
  30 }
  31
  32 int *
  33 fn5 (int a)
  34 {
  35   return a; /* { dg-warning "10:returning 'int' from a function with return type 'int \\*' makes pointer from integer without a cast" } */
  36 }
  37
  38 unsigned int *
  39 fn6 (int *i)
  40 {
  41   return i; /* { dg-warning "10:pointer targets in returning 'int \\*' from a function with return type 'unsigned int \\*' differ" } */
  42 }
  43
  44 void *
  45 fn7 (void (*fp) (void))
  46 {
  47   return fp; /* { dg-warning "10:ISO C forbids return between function pointer" } */
  48 }