When using a PTHLexer, use DiscardToEndOfLine() instead of ReadToEndOfLine().

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59668 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 3 insertions, 2 deletions

diff --git a/lib/Lex/Pragma.cpp b/lib/Lex/Pragma.cpp
index d4c5c6b835..0e0841da9a 100644
--- a/lib/Lex/Pragma.cpp
+++ b/lib/Lex/Pragma.cpp
@@ -193,8 +193,9 @@ void Preprocessor::HandlePragmaOnce(Token &OnceTok) {
 }
 
 void Preprocessor::HandlePragmaMark() {
-  assert(CurLexer && "No current lexer?");
-  CurLexer->ReadToEndOfLine();
+  assert(CurPPLexer && "No current lexer?");
+  if (CurLexer) CurLexer->ReadToEndOfLine();
+  else CurPTHLexer->DiscardToEndOfLine();
 }