| 1 | // RUN: %clang_cc1 -triple=x86_64-unknown-unknown -verify -fcf-protection=branch -fsyntax-only %s |
|---|
| 2 | |
|---|
| 3 | // Function pointer definition. |
|---|
| 4 | typedef void (*FuncPointerWithNoCfCheck)(void) __attribute__((nocf_check)); // no-warning |
|---|
| 5 | typedef void (*FuncPointer)(void); |
|---|
| 6 | |
|---|
| 7 | // Dont allow function declaration and definition mismatch. |
|---|
| 8 | void __attribute__((nocf_check)) testNoCfCheck(); // expected-note {{previous declaration is here}} |
|---|
| 9 | void testNoCfCheck(){}; // expected-error {{conflicting types for 'testNoCfCheck'}} |
|---|
| 10 | |
|---|
| 11 | // No variable or parameter declaration |
|---|
| 12 | __attribute__((nocf_check)) int i; // expected-warning {{'nocf_check' attribute only applies to function}} |
|---|
| 13 | void 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 attributed |
|---|
| 16 | // and non-attributed function pointers. |
|---|
| 17 | void testNoCfCheckMismatch(FuncPointer f) { |
|---|
| 18 | FuncPointerWithNoCfCheck fNoCfCheck = f; // expected-warning {{incompatible function pointer types}} |
|---|
| 19 | (*fNoCfCheck)(); // no-warning |
|---|
| 20 | } |
|---|
| 21 | |
|---|
| 22 | // 'nocf_check' Attribute has no parameters. |
|---|
| 23 | int testNoCfCheckParams() __attribute__((nocf_check(1))); // expected-error {{'nocf_check' attribute takes no arguments}} |
|---|
| 24 | |
|---|