[all-commits] [llvm/llvm-project] 62a16d: [C++2x][Modules] Amend module purview constant lin...

[Iain Sandoe via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 62a16d5e2069542351c164aa0e3b216dc8e153c4
      https://github.com/llvm/llvm-project/commit/62a16d5e2069542351c164aa0e3b216dc8e153c4
  Author: Iain Sandoe <iain at sandoe.co.uk>
  Date:   2023-03-19 (Sun, 19 Mar 2023)

  Changed paths:
    M clang/lib/AST/Decl.cpp
    M clang/test/CXX/module/basic/basic.def.odr/p4.cppm
    M clang/test/CXX/module/basic/basic.link/p3.cppm

  Log Message:
  -----------
  [C++2x][Modules] Amend module purview constant linkage [P2788R0].

This paper has been applied to the working draft and is believed to be
a DR against C++20, so that the patch here makes the change unconditionally.

for:
```
export module A;

const int mod_cst = 10;
```
Before the change, mod_cst would have internal linkage; after the change it
has module linkage.

Differential Revision: https://reviews.llvm.org/D145886