Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
// RUN: %clang_cc1 -emit-llvm -std=c++11 -debug-info-kind=limited %s -o -| FileCheck %s void foo() { decltype(nullptr) t = 0; } // CHECK: !DIBasicType(tag: DW_TAG_unspecified_type, name: "decltype(nullptr)")