================
@@ -2932,6 +2932,22 @@ def warn_private_extern : Warning<
def note_private_extern : Note<
"use __attribute__((visibility(\"hidden\"))) attribute instead">;
+// C23 constexpr
+def err_c23_thread_local_constexpr : Error<
+ "thread-local storage is not allowed with constexpr">;
+def err_c23_extern_constexpr : Error<
+ "extern specifier is not allowed with constexpr">;
----------------
Fznamznon wrote:
I'm not quite sure reusing `err_invalid_decl_spec_combination` will look clear
enough, here is what I got while trying:
```
t3.c:2:1: error: cannot combine with previous 'extern' declaration specifier
2 | constexpr extern int V79 = 10;
| ^ ~~~~~~
```
If that is still better, I can update it.
https://github.com/llvm/llvm-project/pull/73099
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