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// RUN: %clang_cc1 -fsyntax-only -verify %s
#if !__has_attribute(warning)
#warning "warning attribute missing"
#endif
__attribute__((warning("don't call me!"))) int good0(void);
__attribute__((warning)) // expected-error {{'warning' attribute takes one argument}}
int
bad0(void);
int bad1(__attribute__((warning("bad1"))) int param); // expected-error {{'warning' attribute only applies to functions}}
int bad2(void) {
__attribute__((warning("bad2"))); // expected-error {{'warning' attribute cannot be applied to a statement}}
}
__attribute__((warning(3))) // expected-error {{expected string literal as argument of 'warning' attribute}}
int
bad3(void);
__attribute__((warning("foo"), warning("foo"))) int good1(void);
__attribute__((warning("foo"))) int good1(void);
__attribute__((warning("foo"))) int good1(void) {}
__attribute__((warning("foo"), error("foo"))) // expected-error {{'error' and 'warning' attributes are not compatible}}
int
bad4(void);
// expected-note@-3 {{conflicting attribute is here}}
/*
* Note: we differ from GCC here; rather than support redeclarations that add
* or remove this fn attr, we diagnose such differences.
*/
void foo(void); // expected-note {{previous declaration is here}}
__attribute__((warning("oh no foo"))) void foo(void); // expected-error {{'warning' attribute does not appear on the first declaration}}
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