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// RUN: %clang_cc1 -no-opaque-pointers -triple x86_64-unknown-linux -fvisibility hidden -fsanitize=cfi-nvcall -emit-llvm -o - %s | FileCheck %s
// RUN: %clang_cc1 -no-opaque-pointers -triple x86_64-unknown-linux -fvisibility hidden -fsanitize=cfi-nvcall,cfi-cast-strict -emit-llvm -o - %s | FileCheck --check-prefix=CHECK-STRICT %s
struct A {
virtual void f();
};
struct B : A {
int i;
void g();
};
struct C : A {
void g();
};
// CHECK-LABEL: @bg
// CHECK-STRICT-LABEL: @bg
extern "C" void bg(B *b) {
// CHECK: call i1 @llvm.type.test(i8* {{%[^ ]*}}, metadata !"_ZTS1B")
// CHECK-STRICT: call i1 @llvm.type.test(i8* {{%[^ ]*}}, metadata !"_ZTS1B")
b->g();
}
// CHECK-LABEL: @cg
// CHECK-STRICT-LABEL: @cg
extern "C" void cg(C *c) {
// http://clang.llvm.org/docs/ControlFlowIntegrity.html#strictness
// In this case C's layout is the same as its base class, so we allow
// c to be of type A in non-strict mode.
// CHECK: call i1 @llvm.type.test(i8* {{%[^ ]*}}, metadata !"_ZTS1A")
// CHECK-STRICT: call i1 @llvm.type.test(i8* {{%[^ ]*}}, metadata !"_ZTS1C")
c->g();
}
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