1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
|
// RUN: %clang_cc1 -triple=x86_64-unknown-unknown -verify -fcf-protection=branch -fsyntax-only %s
// Function pointer definition.
typedef void (*FuncPointerWithNoCfCheck)(void) __attribute__((nocf_check)); // no-warning
typedef void (*FuncPointer)(void);
// Dont allow function declaration and definition mismatch.
void __attribute__((nocf_check)) testNoCfCheck(); // expected-note {{previous declaration is here}}
void testNoCfCheck(){}; // expected-error {{conflicting types for 'testNoCfCheck'}}
// No variable or parameter declaration
__attribute__((nocf_check)) int i; // expected-warning {{'nocf_check' attribute only applies to function}}
void testNoCfCheckImpl(double __attribute__((nocf_check)) i) {} // expected-warning {{'nocf_check' attribute only applies to function}}
// Allow attributed function pointers as well as casting between attributed
// and non-attributed function pointers.
void testNoCfCheckMismatch(FuncPointer f) {
FuncPointerWithNoCfCheck fNoCfCheck = f; // expected-warning {{incompatible function pointer types}}
(*fNoCfCheck)(); // no-warning
}
// 'nocf_check' Attribute has no parameters.
int testNoCfCheckParams() __attribute__((nocf_check(1))); // expected-error {{'nocf_check' attribute takes no arguments}}
|
