#define MOZ_NO_DANGLING_ON_TEMPORARIES \ __attribute__((annotate("moz_no_dangling_on_temporaries"))) class AnnotateConflict { MOZ_NO_DANGLING_ON_TEMPORARIES int *get() && { return nullptr; } // expected-error {{methods annotated with MOZ_NO_DANGLING_ON_TEMPORARIES cannot be && ref-qualified}} MOZ_NO_DANGLING_ON_TEMPORARIES int test() { return 0; } // expected-error {{methods annotated with MOZ_NO_DANGLING_ON_TEMPORARIES must return a pointer}} }; class NS_ConvertUTF8toUTF16 { public: MOZ_NO_DANGLING_ON_TEMPORARIES int *get() { return nullptr; } operator int*() { return get(); // This should be ignored because the call is implcitly on this } }; NS_ConvertUTF8toUTF16 TemporaryFunction() { return NS_ConvertUTF8toUTF16(); } void UndefinedFunction(int* test); void NoEscapeFunction(int *test) {} int *glob; // expected-note {{through the variable declared here}} void EscapeFunction1(int *test) { glob = test; } // expected-note {{the raw pointer escapes the function scope here}} void EscapeFunction2(int *test, int *&escape) { escape = test; } // expected-note {{the raw pointer escapes the function scope here}} \ expected-note {{through the parameter declared here}} int *EscapeFunction3(int *test) { return test; } // expected-note {{the raw pointer escapes the function scope here}} \ expected-note {{through the return value of the function declared here}} int main() { int *test = TemporaryFunction().get(); // expected-error {{calling `get` on a temporary, potentially allowing use after free of the raw pointer}} int *test2 = NS_ConvertUTF8toUTF16().get(); // expected-error {{calling `get` on a temporary, potentially allowing use after free of the raw pointer}} UndefinedFunction(NS_ConvertUTF8toUTF16().get()); NoEscapeFunction(TemporaryFunction().get()); EscapeFunction1(TemporaryFunction().get()); // expected-error {{calling `get` on a temporary, potentially allowing use after free of the raw pointer}} int *escape; EscapeFunction2(TemporaryFunction().get(), escape); // expected-error {{calling `get` on a temporary, potentially allowing use after free of the raw pointer}} int *escape2 = EscapeFunction3(TemporaryFunction().get()); // expected-error {{calling `get` on a temporary, potentially allowing use after free of the raw pointer}} }