[libc-commits] [libc] [libc] Remove unused _Thread_local define from headers. (PR #156967)

[via libc-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-libc

Author: Alexey Samsonov (vonosmas)

<details>
<summary>Changes</summary>

It was added in dd33f9cdef9f6209aa34713e1417f4a2e24e5ca6 to describe thread-local errno, but is no longer used in the codebase (with the exception of a single integration test, but the llvm-libc-provided `#define _Thread_local thread_local` is not needed there anyway, since `_Thread_local` is a keyword from C11 onwards.

---
Full diff: https://github.com/llvm/llvm-project/pull/156967.diff


1 Files Affected:

- (modified) libc/include/__llvm-libc-common.h (-3) 


``````````diff
diff --git a/libc/include/__llvm-libc-common.h b/libc/include/__llvm-libc-common.h
index 1fe3f4d2aea9c..70d8263e63b65 100644
--- a/libc/include/__llvm-libc-common.h
+++ b/libc/include/__llvm-libc-common.h
@@ -37,9 +37,6 @@
 #undef _Alignof
 #define _Alignof alignof
 
-#undef _Thread_local
-#define _Thread_local thread_local
-
 #undef __NOEXCEPT
 #if __cplusplus >= 201103L
 #define __NOEXCEPT noexcept

``````````

</details>


https://github.com/llvm/llvm-project/pull/156967