gcc/testsuite/gcc.dg/va-arg-pack-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2" } */
   3
   4 int bar (int, const char *, int, ...);
   5 int baz (int, const char *, long int);
   6
   7 int
   8 f1 (int x, ...)
   9 {
  10   return bar (5, "", 6, __builtin_va_arg_pack ());      /* { dg-error "invalid use of" } */
  11 }
  12
  13 extern inline __attribute__((always_inline)) int
  14 f2 (int y, ...)
  15 {
  16   return bar (y, "", __builtin_va_arg_pack ());         /* { dg-error "invalid use of" } */
  17 }
  18
  19 extern inline __attribute__((always_inline)) int
  20 f3 (int y, ...)
  21 {
  22   return bar (y, "", 5, __builtin_va_arg_pack ());
  23 }
  24
  25 extern inline __attribute__((always_inline)) int
  26 f4 (int y, ...)
  27 {
  28   return bar (y, "", 4, __builtin_va_arg_pack (), 6);   /* { dg-error "invalid use of" } */
  29 }
  30
  31 extern inline __attribute__((always_inline)) int
  32 f5 (int y, ...)
  33 {
  34   return baz (y, "", __builtin_va_arg_pack ());         /* { dg-error "invalid use of" } */
  35 }
  36
  37 extern inline __attribute__((always_inline)) int
  38 f6 (int y, ...)
  39 {
  40   return __builtin_va_arg_pack ();                      /* { dg-error "invalid use of" } */
  41 }
  42
  43 int
  44 test (void)
  45 {
  46   int a = f2 (5, "a", 6);
  47   a += f3 (6, "ab", 17LL);
  48   a += f4 (7, 1, 2, 3);
  49   a += f5 (8, 7L);
  50   a += f6 (9);
  51   return a;
  52 }