struct-empty-2.c

来自「Mac OS X 10.4.9 for x86 Source Code gcc」· C语言 代码 · 共 11 行

/* Test diagnostics for empty structures and unions.  Test with
   -pedantic.  */
/* Origin: Joseph Myers <[e-mail]> */
/* { dg-do compile } */
/* { dg-options "-pedantic" } */

struct s0 {}; /* { dg-warning "warning: struct has no members" } */
union u0 {}; /* { dg-warning "warning: union has no members" } */
struct s1 { int : 1; }; /* { dg-warning "warning: struct has no named members" } */
union u1 { int : 1; }; /* { dg-warning "warning: union has no named members" } */