variadic-templates.cpp
624 Bytes
// RUN: %clang_cc1 -std=c++11 -triple x86_64-apple-darwin10 -emit-llvm -o - %s | FileCheck %s
template<typename ...Types>
int get_num_types(Types...) {
return sizeof...(Types);
}
// CHECK-LABEL: define weak_odr i32 @_Z13get_num_typesIJifdEEiDpT_
// CHECK: ret i32 3
template int get_num_types(int, float, double);
// PR10260 - argument packs that expand to nothing
namespace test1 {
template <class... T> void foo() {
int values[sizeof...(T)+1] = { T::value... };
// CHECK-LABEL: define linkonce_odr void @_ZN5test13fooIJEEEvv()
// CHECK: alloca [1 x i32], align 4
}
void test() {
foo<>();
}
}