diff options
Diffstat (limited to 'gcc/testsuite/gcc.dg/cpp/tr-warn2.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/cpp/tr-warn2.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/cpp/tr-warn2.c b/gcc/testsuite/gcc.dg/cpp/tr-warn2.c new file mode 100644 index 000000000..85b624761 --- /dev/null +++ b/gcc/testsuite/gcc.dg/cpp/tr-warn2.c @@ -0,0 +1,18 @@ +/* K+R rejects use of function-like macros in non-function context. + ANSI C explicitly permits this (the macro is not expanded). + + We should not warn about this during pre-expansion of arguments, + since traditional preprocessors don't do pre-expansion, and we get + the warning anyway during the re-scan pass if and only if it is + appropriate. */ + +/* { dg-do preprocess } */ +/* { dg-options -Wtraditional } */ + +#define f(x) x +#define g(x) x / 2 +#define h(a, b) a(b) +f(g) (3) /* { dg-bogus "must be used with arguments" } */ +f 2 /* { dg-warning "must be used with arguments" } */ +f(g) 3 /* { dg-warning "must be used with arguments" } */ +h(f, 3) /* { dg-bogus "must be used with arguments" } */ |