gcc/testsuite/gcc.dg/pr79983.c

   1 /* PR c/79983 */
   2 /* { dg-do compile } */
   3 /* { dg-options "" } */
   4
   5 struct S;
   6 struct S { int i; }; /* { dg-message "originally defined here" } */
   7 struct S { int i, j; }; /* { dg-error "redefinition of 'struct S'" } */
   8
   9 enum E;
  10 enum E { A, B, C }; /* { dg-message "originally defined here" } */
  11 enum E { D, F }; /* { dg-error "nested redefinition of 'enum E'|redeclaration of 'enum E'" } */
  12
  13 union U;
  14 union U { int i; }; /* { dg-message "originally defined here" } */
  15 union U { int i; double d; }; /* { dg-error "redefinition of 'union U'" } */