gcc/testsuite/gcc.dg/c23-tag-7.c

   1 /*
   2  * { dg-do compile }
   3  * { dg-options "-std=c23" }
   4  */
   5
   6 // recursive declarations
   7
   8 extern struct bar { struct bar* p; int x; } b;
   9 extern struct bar { struct bar* p; int x; } b;
  10
  11 struct foo { struct foo { struct foo* p; int x; }* p; int x; } a;       /* { dg-error "nested" } */
  12