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36 lines
1.0 KiB
36 lines
1.0 KiB
4 months ago
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// RUN: %clang_cc1 -triple x86_64-unknown-linux -fvisibility hidden -fsanitize=cfi-nvcall -emit-llvm -o - %s | FileCheck %s
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// RUN: %clang_cc1 -triple x86_64-unknown-linux -fvisibility hidden -fsanitize=cfi-nvcall,cfi-cast-strict -emit-llvm -o - %s | FileCheck --check-prefix=CHECK-STRICT %s
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struct A {
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virtual void f();
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};
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struct B : A {
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int i;
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void g();
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};
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struct C : A {
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void g();
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};
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// CHECK-LABEL: @bg
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// CHECK-STRICT-LABEL: @bg
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extern "C" void bg(B *b) {
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// CHECK: call i1 @llvm.type.test(i8* {{%[^ ]*}}, metadata !"_ZTS1B")
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// CHECK-STRICT: call i1 @llvm.type.test(i8* {{%[^ ]*}}, metadata !"_ZTS1B")
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b->g();
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}
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// CHECK-LABEL: @cg
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// CHECK-STRICT-LABEL: @cg
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extern "C" void cg(C *c) {
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// http://clang.llvm.org/docs/ControlFlowIntegrity.html#strictness
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// In this case C's layout is the same as its base class, so we allow
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// c to be of type A in non-strict mode.
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// CHECK: call i1 @llvm.type.test(i8* {{%[^ ]*}}, metadata !"_ZTS1A")
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// CHECK-STRICT: call i1 @llvm.type.test(i8* {{%[^ ]*}}, metadata !"_ZTS1C")
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c->g();
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}
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