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0fb8c877c4
in gcc by https://gcc.gnu.org/ml/gcc-cvs/2018-04/msg00534.html. The -mibt feature flag is being removed, and the -fcf-protection option now also defines a CET macro and causes errors when used on non-X86 targets, while X86 targets no longer check for -mibt and -mshstk to determine if -fcf-protection is supported. -mshstk is now used only to determine availability of shadow stack intrinsics. Comes with an LLVM patch (D46882). Patch by mike.dvoretsky Differential Revision: https://reviews.llvm.org/D46881 llvm-svn: 332704
24 lines
1.3 KiB
C++
24 lines
1.3 KiB
C++
// RUN: %clang_cc1 -triple=i386-unknown-unknown -verify -fcf-protection=branch -std=c++11 -fsyntax-only %s
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// Function pointer definition.
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[[gnu::nocf_check]] typedef void (*FuncPointerWithNoCfCheck)(void); // 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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[[gnu::nocf_check]] void 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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int [[gnu::nocf_check]] i; // expected-error {{'nocf_check' attribute cannot be applied to types}}
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void testNoCfCheckImpl(double i [[gnu::nocf_check]]) {} // expected-warning {{'nocf_check' attribute only applies to functions and function pointers}}
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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-error {{cannot initialize a variable of type}}
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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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[[gnu::nocf_check(1)]] int testNoCfCheckParams(); // expected-error {{'nocf_check' attribute takes no arguments}}
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