gcc/testsuite/gcc.dg/Wenum-int-mismatch-3.c

   1 /* PR c/105131 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-Wc++-compat -fno-short-enums" } */
   4
   5 enum E { E1 = -1, E2 = 0, E3 = 1 };
   6
   7 int foo(void); /* { dg-message "previous declaration" } */
   8 enum E foo(void) { return E2; } /* { dg-warning "conflicting types" } */
   9
  10 void bar(int); /* { dg-message "previous declaration" } */
  11 void bar(enum E); /* { dg-warning "conflicting types" } */
  12
  13 extern int arr[10]; /* { dg-message "previous declaration" } */
  14 extern enum E arr[10]; /* { dg-warning "conflicting types" } */
  15
  16 extern int i; /* { dg-message "previous declaration" } */
  17 extern enum E i; /* { dg-warning "conflicting types" } */
  18
  19 extern int *p; /* { dg-message "previous declaration" } */
  20 extern enum E *p; /* { dg-warning "conflicting types" } */
  21
  22 enum E foo2(void) { return E2; } /* { dg-message "previous definition" } */
  23 int foo2(void); /* { dg-warning "conflicting types" } */
  24
  25 void bar2(enum E); /* { dg-message "previous declaration" } */
  26 void bar2(int); /* { dg-warning "conflicting types" } */
  27
  28 extern enum E arr2[10]; /* { dg-message "previous declaration" } */
  29 extern int arr2[10]; /* { dg-warning "conflicting types" } */
  30
  31 extern enum E i2; /* { dg-message "previous declaration" } */
  32 extern int i2; /* { dg-warning "conflicting types" } */
  33
  34 extern enum E *p2; /* { dg-message "previous declaration" } */
  35 extern int *p2; /* { dg-warning "conflicting types" } */
  36
  37 enum F { F1 = -1, F2, F3 } __attribute__ ((__packed__));
  38
  39 enum F fn1(void); /* { dg-message "previous declaration" } */
  40 signed char fn1(void); /* { dg-warning "conflicting types" } */
  41
  42 signed char fn2(void); /* { dg-message "previous declaration" } */
  43 enum F fn2(void); /* { dg-warning "conflicting types" } */