From 222e2a7620e6520ffaf4fc4e69d79c18da31542e Mon Sep 17 00:00:00 2001 From: "Zancanaro; Carlo" Date: Mon, 24 Sep 2012 09:58:17 +1000 Subject: Add the clang library to the repo (with some of my changes, too). --- clang/test/CodeGenCXX/dynamic-cast-always-null.cpp | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 clang/test/CodeGenCXX/dynamic-cast-always-null.cpp (limited to 'clang/test/CodeGenCXX/dynamic-cast-always-null.cpp') diff --git a/clang/test/CodeGenCXX/dynamic-cast-always-null.cpp b/clang/test/CodeGenCXX/dynamic-cast-always-null.cpp new file mode 100644 index 0000000..2c3ea13 --- /dev/null +++ b/clang/test/CodeGenCXX/dynamic-cast-always-null.cpp @@ -0,0 +1,19 @@ +// RUN: %clang_cc1 -I%S %s -triple x86_64-apple-darwin10 -emit-llvm -fcxx-exceptions -fexceptions -std=c++11 -o - | FileCheck %s +struct A { virtual ~A(); }; +struct B final : A { }; +struct C { virtual ~C(); int c; }; + +// CHECK: @_Z1fP1B +C *f(B* b) { + // CHECK-NOT: call i8* @__dynamic_cast + // CHECK: ret %struct.C* null + return dynamic_cast(b); +} + +// CHECK: @_Z1fR1B +C &f(B& b) { + // CHECK-NOT: call i8* @__dynamic_cast + // CHECK: call void @__cxa_bad_cast() noreturn + // CHECK: ret %struct.C* undef + return dynamic_cast(b); +} -- cgit v1.2.3