From 60d4a10710693d9562fa2c01307d2acddbe104bb Mon Sep 17 00:00:00 2001
From: Alex Brachet <abrachet@google.com>
Date: Tue, 14 Jun 2022 15:05:16 +0000
Subject: [PATCH] [libc] Guard common macro names

Differential revision: https://reviews.llvm.org/D127692
---
 libc/src/__support/common.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/libc/src/__support/common.h b/libc/src/__support/common.h
index 2660e7f..9e28be0 100644
--- a/libc/src/__support/common.h
+++ b/libc/src/__support/common.h
@@ -11,9 +11,15 @@
 
 #define LIBC_INLINE_ASM __asm__ __volatile__
 
+#ifndef likely
 #define likely(x) __builtin_expect(!!(x), 1)
+#endif
+#ifndef unlikely
 #define unlikely(x) __builtin_expect(x, 0)
+#endif
+#ifndef UNUSED
 #define UNUSED __attribute__((unused))
+#endif
 
 #ifndef LLVM_LIBC_FUNCTION_ATTR
 #define LLVM_LIBC_FUNCTION_ATTR
-- 
2.7.4