| /* { dg-do run } */ |
| /* { dg-options -w } */ |
| |
| /* count() used to give 1 owing to a buggy test for varargs. */ |
| #define count(y...) count1 ( , ##y) |
| #define count1(y...) count2 (y,1,0) |
| #define count2(_,x0,n,y...) n |
| #if count() != 0 || count(A) != 1 |
| #error Incorrect vararg argument counts |
| #endif |
| |
| /* Test for changed behavior of the GNU varargs extension. |
| ##args, where args is a rest argument which received zero tokens, |
| used to delete the previous sequence of nonwhitespace characters. |
| Now it deletes the previous token. */ |
| |
| #include <string.h> |
| |
| #define S(str, args...) " " str "\n", ##args |
| |
| int |
| main() |
| { |
| const char *s = S("foo"); |
| return strchr (s, '\n') == NULL; |
| } |
