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-rw-r--r--clang/test/Sema/attr-nocf_check.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/clang/test/Sema/attr-nocf_check.c b/clang/test/Sema/attr-nocf_check.c
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+++ b/clang/test/Sema/attr-nocf_check.c
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+// RUN: %clang_cc1 -triple=x86_64-unknown-unknown -verify -fcf-protection=branch -target-feature +ibt -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}}
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