From e8fa06e07363b6d5e6c371bbd454d51bab78d01d Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Tue, 12 May 2009 18:21:11 +0000
Subject: [PATCH] accept "#pragma clang foo" where we accept "#pragma GCC foo".

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71572 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Lex/Pragma.cpp     | 13 ++++++++++++-
 test/Lexer/constants.c |  4 ++--
 2 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/lib/Lex/Pragma.cpp b/lib/Lex/Pragma.cpp
index bde3fbc0e8..ce5934134f 100644
--- a/lib/Lex/Pragma.cpp
+++ b/lib/Lex/Pragma.cpp
@@ -666,6 +666,8 @@ struct PragmaSTDC_UnknownHandler : public PragmaHandler {
 void Preprocessor::RegisterBuiltinPragmas() {
   AddPragmaHandler(0, new PragmaOnceHandler(getIdentifierInfo("once")));
   AddPragmaHandler(0, new PragmaMarkHandler(getIdentifierInfo("mark")));
+  
+  // #pragma GCC ...
   AddPragmaHandler("GCC", new PragmaPoisonHandler(getIdentifierInfo("poison")));
   AddPragmaHandler("GCC", new PragmaSystemHeaderHandler(
                                           getIdentifierInfo("system_header")));
@@ -673,7 +675,16 @@ void Preprocessor::RegisterBuiltinPragmas() {
                                           getIdentifierInfo("dependency")));
   AddPragmaHandler("GCC", new PragmaDiagnosticHandler(
                                               getIdentifierInfo("diagnostic")));
-  
+  // #pragma clang ...
+  AddPragmaHandler("clang", new PragmaPoisonHandler(
+                                          getIdentifierInfo("poison")));
+  AddPragmaHandler("clang", new PragmaSystemHeaderHandler(
+                                          getIdentifierInfo("system_header")));
+  AddPragmaHandler("clang", new PragmaDependencyHandler(
+                                          getIdentifierInfo("dependency")));
+  AddPragmaHandler("clang", new PragmaDiagnosticHandler(
+                                          getIdentifierInfo("diagnostic")));
+
   AddPragmaHandler("STDC", new PragmaSTDC_FP_CONTRACTHandler(
                                              getIdentifierInfo("FP_CONTRACT")));
   AddPragmaHandler("STDC", new PragmaSTDC_FENV_ACCESSHandler(
diff --git a/test/Lexer/constants.c b/test/Lexer/constants.c
index c0355314b2..fcb6de9545 100644
--- a/test/Lexer/constants.c
+++ b/test/Lexer/constants.c
@@ -25,11 +25,11 @@ t',
 };
 
 
-#pragma GCC diagnostic ignored "-Wmultichar"
+#pragma clang diagnostic ignored "-Wmultichar"
 
 char d = 'df'; // no warning.
 char e = 'abcd';  // still warn: expected-warning {{multi-character character constant}}
 
-#pragma GCC diagnostic ignored "-Wfour-char-constants"
+#pragma clang diagnostic ignored "-Wfour-char-constants"
 
 char f = 'abcd';  // ignored.
-- 
2.40.0