gcc/testsuite/gcc.dg/c23-stdarg-2.c

   1 /* Test C23 variadic functions with no named parameters.  Compilation tests,
   2    valid code, verify not considered unprototyped functions.  */
   3 /* { dg-do compile } */
   4 /* { dg-options "-std=c23 -pedantic-errors -Wstrict-prototypes -Wold-style-definition" } */
   5
   6 int f (...);
   7 int g (int (...));
   8 int h (...) { return 0; }
   9
  10 typedef int A[];
  11 typedef int A2[2];
  12
  13 A *f1 (...);
  14 A2 *f1 (...);
  15 A *f1 (...) { return 0; }
  16
  17 A2 *f2 (...);
  18 A *f2 (...);
  19 A2 *f2 (...) { return 0; }
  20 typeof (f1) f2;
  21
  22 int t () { return f () + f (1) + f (1, 2) + h () + h (1.5, 2, f1) + g (f); }