https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116077
Bug ID: 116077
Summary: GCC hasn't implemented CWG DR 2387
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Keywords: wrong-code
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: de34 at live dot cn
Target Milestone: ---
CWG 2387 (https://cplusplus.github.io/CWG/issues/2387.html), which makes const
variable templates has external linkage by default, is not implemented by GCC
yet.
As shown in https://wandbox.org/permlink/bVfvGTlfwJ9IQll7 (switch to Clang to
see the correct results):
common.h:
```
template<typename>
constexpr int non_inline{};
template<typename>
inline constexpr int inlined{};
```
other.cpp
```
#include "common.h"
#include <iostream>
void other_inlined()
{
std::cout << " other: " << &inlined<int> << '\n';
}
void other_non_inline()
{
std::cout << " other: " << &non_inline<int> << '\n';
}
```
main.cpp
```
#include "common.h"
#include <iostream>
void other_inlined();
void other_non_inline();
int main()
{
std::cout << "non-inline:\n";
std::cout << " main: " << &non_inline<int> << '\n';
other_non_inline();
std::cout << "inlined:\n";
std::cout << " main: " << &inlined<int> << '\n';
other_inlined();
}
```
