| // 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(); |
| } |
