diff options
Diffstat (limited to 'clang/test/Preprocessor/warning_tests.c')
| -rw-r--r-- | clang/test/Preprocessor/warning_tests.c | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/clang/test/Preprocessor/warning_tests.c b/clang/test/Preprocessor/warning_tests.c index ac0b37b645a..77b84562694 100644 --- a/clang/test/Preprocessor/warning_tests.c +++ b/clang/test/Preprocessor/warning_tests.c @@ -11,7 +11,7 @@ #warning Should have -Wparentheses #endif -// expected-error@+2 {{builtin warning check macro requires a parenthesized string}} +// expected-error@+2 {{expected string literal}} // expected-error@+1 {{expected value in expression}} #if __has_warning(-Wfoo) #endif @@ -21,3 +21,26 @@ #else #warning Not a valid warning flag #endif + +// expected-error@+2 {{builtin warning check macro requires a parenthesized string}} +// expected-error@+1 {{invalid token}} +#if __has_warning "not valid" +#endif + +// Macro expansion does not occur in the parameter to __has_warning +// (as is also expected behaviour for ordinary macros), so the +// following should not expand: + +#define MY_ALIAS "-Wparentheses" + +// expected-error@+1 2{{expected}} +#if __has_warning(MY_ALIAS) +#error Alias expansion not allowed +#endif + +// But deferring should expand: +#define HAS_WARNING(X) __has_warning(X) + +#if !HAS_WARNING(MY_ALIAS) +#error Expansion should have occurred +#endif |
