From 4921ecfc8194c11ec7c659ad1de11da6e8307361 Mon Sep 17 00:00:00 2001
From: "Yaxun (Sam) Liu" <yaxun.liu@amd.com>
Date: Fri, 25 Jun 2021 10:10:27 -0400
Subject: [PATCH] [clang] Fix build failure due to _S

_S is a reserved identifier in <ctype.h> on Solaris.
---
 clang/include/clang/Sema/Sema.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/clang/include/clang/Sema/Sema.h b/clang/include/clang/Sema/Sema.h
index d50d2dd83530e..4c3a7035bcc94 100644
--- a/clang/include/clang/Sema/Sema.h
+++ b/clang/include/clang/Sema/Sema.h
@@ -1778,8 +1778,8 @@ class Sema final {
     bool SavedDeferDiags = false;
 
   public:
-    DeferDiagsRAII(Sema &_S, bool DeferDiags)
-        : S(_S), SavedDeferDiags(S.DeferDiags) {
+    DeferDiagsRAII(Sema &S, bool DeferDiags)
+        : S(S), SavedDeferDiags(S.DeferDiags) {
       S.DeferDiags = DeferDiags;
     }
     ~DeferDiagsRAII() { S.DeferDiags = SavedDeferDiags; }