xref: /aosp_15_r20/external/clang/test/CodeGenCXX/cxx1y-variable-template.cpp (revision 67e74705e28f6214e480b399dd47ea732279e315)
1*67e74705SXin Li // RUN: %clang_cc1 -std=c++1y -triple x86_64-linux-gnu -emit-llvm -o - %s | FileCheck %s
2*67e74705SXin Li 
3*67e74705SXin Li // Check that we keep the 'extern' when we instantiate the definition of this
4*67e74705SXin Li // variable template specialization.
5*67e74705SXin Li template<typename T> extern const int extern_redecl;
6*67e74705SXin Li template<typename T> const int extern_redecl = 5;
7*67e74705SXin Li template const int extern_redecl<int>;
8*67e74705SXin Li 
9*67e74705SXin Li // CHECK: @_Z13extern_redeclIiE = weak_odr constant
10*67e74705SXin Li 
11*67e74705SXin Li template<typename T> struct Outer {
12*67e74705SXin Li   template<typename U> struct Inner {
13*67e74705SXin Li     template<typename V> static int arr[];
14*67e74705SXin Li   };
15*67e74705SXin Li };
16*67e74705SXin Li Outer<char[100]> outer_int;
17*67e74705SXin Li int init_arr();
18*67e74705SXin Li template<typename T> template<typename U> template<typename V> int Outer<T>::Inner<U>::arr[sizeof(T) + sizeof(U) + sizeof(V)] = { init_arr() };
19*67e74705SXin Li int *p = Outer<char[100]>::Inner<char[20]>::arr<char[3]>;
20*67e74705SXin Li 
21*67e74705SXin Li // CHECK: @_ZN5OuterIA100_cE5InnerIA20_cE3arrIA3_cEE = linkonce_odr global [123 x i32] zeroinitializer
22*67e74705SXin Li // CHECK: @_ZGVN5OuterIA100_cE5InnerIA20_cE3arrIA3_cEE = linkonce_odr global
23*67e74705SXin Li 
24*67e74705SXin Li // CHECK: call {{.*}}@_Z8init_arrv
25