diff --git a/libc/include/__llvm-libc-common.h b/libc/include/__llvm-libc-common.h
index e0e29bbbd5f87..d54ee7b9f91f3 100644
--- a/libc/include/__llvm-libc-common.h
+++ b/libc/include/__llvm-libc-common.h
@@ -53,7 +53,11 @@
 #define __restrict restrict // C99 and above support the restrict keyword.
 
 #undef __NOEXCEPT
+#ifdef __GNUC__
+#define __NOEXCEPT __attribute__((__nothrow__))
+#else
 #define __NOEXCEPT
+#endif
 
 #endif // __cplusplus