forked from OSchip/llvm-project
57 lines
2.0 KiB
C++
57 lines
2.0 KiB
C++
// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm -fsanitize=cfi-icall -o - %s | FileCheck %s
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#if !__has_builtin(__builtin_function_start)
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#error "missing __builtin_function_start"
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#endif
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void a(void) {}
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// CHECK: @e = global i8* bitcast (void ()* no_cfi @_Z1av to i8*)
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const void *e = __builtin_function_start(a);
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constexpr void (*d)() = &a;
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// CHECK: @f = global i8* bitcast (void ()* no_cfi @_Z1av to i8*)
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const void *f = __builtin_function_start(d);
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void b(void) {}
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// CHECK: @g = global [2 x i8*] [i8* bitcast (void ()* @_Z1bv to i8*), i8* bitcast (void ()* no_cfi @_Z1bv to i8*)]
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void *g[] = {(void *)b, __builtin_function_start(b)};
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void c(void *p) {}
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class A {
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public:
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void f();
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virtual void g();
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static void h();
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int i() const;
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int i(int n) const;
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};
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void A::f() {}
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void A::g() {}
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void A::h() {}
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// CHECK: define {{.*}}i32 @_ZNK1A1iEv(%class.A* {{.*}}%this)
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int A::i() const { return 0; }
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// CHECK: define {{.*}}i32 @_ZNK1A1iEi(%class.A* noundef {{.*}}%this, i32 noundef %n)
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int A::i(int n) const { return 0; }
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void h(void) {
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// CHECK: store i8* bitcast (void ()* no_cfi @_Z1bv to i8*), i8** %g
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void *g = __builtin_function_start(b);
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// CHECK: call void @_Z1cPv(i8* noundef bitcast (void ()* no_cfi @_Z1av to i8*))
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c(__builtin_function_start(a));
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// CHECK: store i8* bitcast (void (%class.A*)* no_cfi @_ZN1A1fEv to i8*), i8** %Af
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void *Af = __builtin_function_start(&A::f);
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// CHECK: store i8* bitcast (void (%class.A*)* no_cfi @_ZN1A1gEv to i8*), i8** %Ag
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void *Ag = __builtin_function_start(&A::g);
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// CHECK: store i8* bitcast (void ()* no_cfi @_ZN1A1hEv to i8*), i8** %Ah
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void *Ah = __builtin_function_start(&A::h);
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// CHECK: store i8* bitcast (i32 (%class.A*)* no_cfi @_ZNK1A1iEv to i8*), i8** %Ai1
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void *Ai1 = __builtin_function_start((int(A::*)() const) & A::i);
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// CHECK: store i8* bitcast (i32 (%class.A*, i32)* no_cfi @_ZNK1A1iEi to i8*), i8** %Ai2
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void *Ai2 = __builtin_function_start((int(A::*)(int) const) & A::i);
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}
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