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llvm-project/clang/test/CodeGenCXX/dynamic-cast-always-null.cpp

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Update all tests other than Driver/std.cpp to use -std=c++11 rather than -std=c++0x. Patch by Ahmed Charles! llvm-svn: 141900
2011-10-14 06:29:44 +08:00
// RUN: %clang_cc1 -I%S %s -triple x86_64-apple-darwin10 -emit-llvm -fcxx-exceptions -fexceptions -std=c++11 -o - | FileCheck %s
When we know that a dynamic_cast always returns null, we can make CodeGenFunction::EmitDynamicCast always return null or throw a bad_cast exception. llvm-svn: 129264
2011-04-11 09:45:29 +08:00
struct A { virtual ~A(); };
struct B final : A { };
Cleanup tests, no functionality change. llvm-svn: 129672
2011-04-18 05:49:47 +08:00
struct C { virtual ~C(); int c; };
When we know that a dynamic_cast always returns null, we can make CodeGenFunction::EmitDynamicCast always return null or throw a bad_cast exception. llvm-svn: 129264
2011-04-11 09:45:29 +08:00
// CHECK: @_Z1fP1B
C *f(B* b) {
// CHECK-NOT: call i8* @__dynamic_cast
// CHECK: ret %struct.C* null
return dynamic_cast<C*>(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<C&>(b);
}