r332961 - [clang-format] Fix crash in getLengthToMatchingParen

[Krasimir Georgiev via cfe-commits]

Author: krasimir
Date: Tue May 22 02:46:55 2018
New Revision: 332961

URL: http://llvm.org/viewvc/llvm-project?rev=332961&view=rev
Log:
[clang-format] Fix crash in getLengthToMatchingParen

Summary:
Found by oss-fuzz:
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=8212

Reviewers: bkramer

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D47191

Modified:
    cfe/trunk/lib/Format/ContinuationIndenter.cpp

Modified: cfe/trunk/lib/Format/ContinuationIndenter.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Format/ContinuationIndenter.cpp?rev=332961&r1=332960&r2=332961&view=diff
==============================================================================
--- cfe/trunk/lib/Format/ContinuationIndenter.cpp (original)
+++ cfe/trunk/lib/Format/ContinuationIndenter.cpp Tue May 22 02:46:55 2018
@@ -94,9 +94,9 @@ static unsigned getLengthToMatchingParen
       break;
     if (!End->Next->closesScope())
       continue;
-    if (End->Next->MatchingParen->isOneOf(tok::l_brace,
-                                          TT_ArrayInitializerLSquare,
-                                          tok::less)) {
+    if (End->Next->MatchingParen &&
+        End->Next->MatchingParen->isOneOf(
+            tok::l_brace, TT_ArrayInitializerLSquare, tok::less)) {
       const ParenState *State = FindParenState(End->Next->MatchingParen);
       if (State && State->BreakBeforeClosingBrace)
         break;