24 lines · c
1// RUN: %clang_cc1 -triple=x86_64-unknown-unknown -verify -fcf-protection=branch -fsyntax-only %s2 3// Function pointer definition.4typedef void (*FuncPointerWithNoCfCheck)(void) __attribute__((nocf_check)); // no-warning5typedef void (*FuncPointer)(void);6 7// Dont allow function declaration and definition mismatch.8void __attribute__((nocf_check)) testNoCfCheck(void); // expected-note {{previous declaration is here}}9void testNoCfCheck(void){}; // expected-error {{conflicting types for 'testNoCfCheck'}}10 11// No variable or parameter declaration12__attribute__((nocf_check)) int i; // expected-warning {{'nocf_check' attribute only applies to function}}13void testNoCfCheckImpl(double __attribute__((nocf_check)) i) {} // expected-warning {{'nocf_check' attribute only applies to function}}14 15// Allow attributed function pointers as well as casting between attributed16// and non-attributed function pointers.17void testNoCfCheckMismatch(FuncPointer f) {18 FuncPointerWithNoCfCheck fNoCfCheck = f; // expected-error {{incompatible function pointer types}}19 (*fNoCfCheck)(); // no-warning20}21 22// 'nocf_check' Attribute has no parameters.23int testNoCfCheckParams(void) __attribute__((nocf_check(1))); // expected-error {{'nocf_check' attribute takes no arguments}}24