24 lines
1.3 KiB
C
24 lines
1.3 KiB
C
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// RUN: %clang_cc1 -triple=x86_64-unknown-unknown -verify -fcf-protection=branch -fsyntax-only %s
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// Function pointer definition.
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typedef void (*FuncPointerWithNoCfCheck)(void) __attribute__((nocf_check)); // no-warning
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typedef void (*FuncPointer)(void);
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// Dont allow function declaration and definition mismatch.
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void __attribute__((nocf_check)) testNoCfCheck(); // expected-note {{previous declaration is here}}
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void testNoCfCheck(){}; // expected-error {{conflicting types for 'testNoCfCheck'}}
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// No variable or parameter declaration
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__attribute__((nocf_check)) int i; // expected-warning {{'nocf_check' attribute only applies to function}}
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void testNoCfCheckImpl(double __attribute__((nocf_check)) i) {} // expected-warning {{'nocf_check' attribute only applies to function}}
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// Allow attributed function pointers as well as casting between attributed
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// and non-attributed function pointers.
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void testNoCfCheckMismatch(FuncPointer f) {
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FuncPointerWithNoCfCheck fNoCfCheck = f; // expected-warning {{incompatible function pointer types}}
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(*fNoCfCheck)(); // no-warning
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}
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// 'nocf_check' Attribute has no parameters.
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int testNoCfCheckParams() __attribute__((nocf_check(1))); // expected-error {{'nocf_check' attribute takes no arguments}}
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