You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
36 lines
1.0 KiB
36 lines
1.0 KiB
// RUN: %clang_cc1 -triple x86_64-unknown-linux -fvisibility hidden -fsanitize=cfi-nvcall -emit-llvm -o - %s | FileCheck %s
|
|
// 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
|
|
|
|
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();
|
|
}
|