gcc/testsuite/gcc.dg/pr17188-1.c

   1 /* A redefinition of an empty struct should be diagnosed the same as a
   2    redefinition of any other tag, but formerly only s2 and s4 were
   3    diagnosed.  Bug 17188.  */
   4 /* Origin: Joseph Myers <jsm@polyomino.org.uk> */
   5 /* { dg-do compile } */
   6 /* { dg-options "" } */
   7
   8 struct s0 { }; /* { dg-message "note: originally defined here" } */
   9 struct s0;
  10 struct s0 { }; /* { dg-error "redefinition of 'struct s0'" } */
  11
  12 struct s1 { }; /* { dg-message "note: originally defined here" } */
  13 struct s1 { }; /* { dg-error "redefinition of 'struct s1'" } */
  14
  15 struct s2 { int a : 1; }; /* { dg-message "note: originally defined here" } */
  16 struct s2 { int a : 1; }; /* { dg-error "redefinition of 'struct s2'" } */
  17
  18 struct s3 { }; /* { dg-message "note: originally defined here" } */
  19 struct s3 { int a : 1; }; /* { dg-error "redefinition of 'struct s3'" } */
  20
  21 struct s4 { int a : 1; }; /* { dg-message "note: originally defined here" } */
  22 struct s4 { }; /* { dg-error "redefinition of 'struct s4'" } */
  23
  24 struct s5 { int a : 1; };
  25 struct s5;
  26
  27 struct s6;
  28 struct s6 { int a : 1; };
  29
  30 struct s7;
  31 struct s7 { };