File: pr17188-1.c

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gcc-riscv64-unknown-elf 8.3.0.2019.08%2Bdfsg-1
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/* A redefinition of an empty struct should be diagnosed the same as a
   redefinition of any other tag, but formerly only s2 and s4 were
   diagnosed.  Bug 17188.  */
/* Origin: Joseph Myers <jsm@polyomino.org.uk> */
/* { dg-do compile } */
/* { dg-options "" } */

struct s0 { }; /* { dg-message "note: originally defined here" } */
struct s0;
struct s0 { }; /* { dg-error "redefinition of 'struct s0'" } */

struct s1 { }; /* { dg-message "note: originally defined here" } */
struct s1 { }; /* { dg-error "redefinition of 'struct s1'" } */

struct s2 { int a : 1; }; /* { dg-message "note: originally defined here" } */
struct s2 { int a : 1; }; /* { dg-error "redefinition of 'struct s2'" } */

struct s3 { }; /* { dg-message "note: originally defined here" } */
struct s3 { int a : 1; }; /* { dg-error "redefinition of 'struct s3'" } */

struct s4 { int a : 1; }; /* { dg-message "note: originally defined here" } */
struct s4 { }; /* { dg-error "redefinition of 'struct s4'" } */

struct s5 { int a : 1; };
struct s5;

struct s6;
struct s6 { int a : 1; };

struct s7;
struct s7 { };