llvm-project/clang/test/CodeGenCXX/debug-info-alias.cpp

// RUN: %clang -g -gno-template-alias -std=c++11 -S -emit-llvm %s -o - | FileCheck %s

template<typename T>
struct foo {
};

template<typename T, typename T2 = int>
struct baz {
};

namespace x {
// splitting these over multiple lines to make sure the right token is used for
// the location
template<typename T>
using
# 42
bar
= foo<T*>;
}

// CHECK: !DIGlobalVariable(name: "bi",{{.*}} type: [[BINT:![0-9]+]]
x::bar<int> bi;
// CHECK: !DIGlobalVariable(name: "bf",{{.*}} type: [[BFLOAT:![0-9]+]]
// CHECK: [[BFLOAT]] = !DIDerivedType(tag: DW_TAG_typedef, name: "bar<float>"
x::bar<float> bf;
// CHECK: !DIGlobalVariable(name: "bz",{{.*}} type: [[BBAZ:![0-9]+]]
// CHECK: [[BBAZ]] = !DIDerivedType(tag: DW_TAG_typedef, name: "bar<baz<int,{{ *}}int> >"
x::bar<baz<int>> bz;

using
// CHECK: !DIGlobalVariable(name: "n",{{.*}} type: [[NARF:![0-9]+]]
# 142
narf // CHECK: [[NARF]] = !DIDerivedType(tag: DW_TAG_typedef, name: "narf"
// CHECK-SAME:                           line: 142
= int;
narf n;

template <typename T>
using tv = void;
// CHECK: !DIDerivedType(tag: DW_TAG_typedef, name: "tv<int>"
tv<int> *tvp;

using v = void;
// CHECK: !DIDerivedType(tag: DW_TAG_typedef, name: "v"
v *vp;

// CHECK: [[BINT]] = !DIDerivedType(tag: DW_TAG_typedef, name: "bar<int>"
// CHECK-SAME:                      line: 42,