[libc-commits] [libc] 369b2a7 - [libc] Remove unused _Thread_local define from headers. (#156967)

[via libc-commits]

Author: Alexey Samsonov
Date: 2025-09-04T14:02:43-07:00
New Revision: 369b2a783d90a501c7234ecfdd7c863bdb03ce3c

URL: https://github.com/llvm/llvm-project/commit/369b2a783d90a501c7234ecfdd7c863bdb03ce3c
DIFF: https://github.com/llvm/llvm-project/commit/369b2a783d90a501c7234ecfdd7c863bdb03ce3c.diff

LOG: [libc] Remove unused _Thread_local define from headers. (#156967)

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.

Added: 
    

Modified: 
    libc/include/__llvm-libc-common.h

Removed: 
    


################################################################################
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