[libc-commits] [libc] b29bfa5 - [libc][NFC] Fix GCC build in __futex_word.h (#192078)

[via libc-commits]

Author: Jeff Bailey
Date: 2026-04-14T18:07:29+01:00
New Revision: b29bfa5e9b2b1cd395566759f5f0f27cb706fe94

URL: https://github.com/llvm/llvm-project/commit/b29bfa5e9b2b1cd395566759f5f0f27cb706fe94
DIFF: https://github.com/llvm/llvm-project/commit/b29bfa5e9b2b1cd395566759f5f0f27cb706fe94.diff

LOG: [libc][NFC] Fix GCC build in __futex_word.h (#192078)

Included __llvm-libc-common.h in __futex_word.h to fix a build failure
with GCC.

GCC in C++ mode does not recognize _Alignas without the mapping to
alignas provided in __llvm-libc-common.h.

The failure was introduced in commit 91c0fdfe1392.

Added: 
    

Modified: 
    libc/include/llvm-libc-types/__futex_word.h

Removed: 
    


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diff  --git a/libc/include/llvm-libc-types/__futex_word.h b/libc/include/llvm-libc-types/__futex_word.h
index 04023c7e2d5ff..302984a8867dd 100644
--- a/libc/include/llvm-libc-types/__futex_word.h
+++ b/libc/include/llvm-libc-types/__futex_word.h
@@ -9,6 +9,8 @@
 #ifndef LLVM_LIBC_TYPES___FUTEX_WORD_H
 #define LLVM_LIBC_TYPES___FUTEX_WORD_H
 
+#include "__llvm-libc-common.h"
+
 typedef struct {
   // Futex word should be aligned appropriately to allow target atomic
   // instructions. This declaration mimics the internal setup.