From 413c66ec880b44bcad4a5b093f52bb5ccc4eef50 Mon Sep 17 00:00:00 2001
From: Ivan Donchevskii <ivan.donchevskii@qt.io>
Date: Thu, 15 Feb 2018 14:55:07 +0100
Subject: [PATCH] C++: Fix crash on '{' press
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Introduced by 0629400.
Sometimes typing '{' after class crashes QtC.

Task-number: QTCREATORBUG-19726
Change-Id: Idbbfaaa21837ec4afbe7debbd80ddaa484120f09
Reviewed-by: Nikita Baryshnikov <nib952051@gmail.com>
Reviewed-by: André Hartmann <aha_1980@gmx.de>
Reviewed-by: David Schulz <david.schulz@qt.io>
---
 src/libs/cplusplus/MatchingText.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/libs/cplusplus/MatchingText.cpp b/src/libs/cplusplus/MatchingText.cpp
index 2909b164e16..9b3a3f75f54 100644
--- a/src/libs/cplusplus/MatchingText.cpp
+++ b/src/libs/cplusplus/MatchingText.cpp
@@ -347,7 +347,7 @@ static bool recordLikeMightFollowToken(const Token &token)
 
 static bool isAfterRecordLikeDefinition(const BackwardsScanner &tokens, int index)
 {
-    for (;; --index) {
+    for (; index >= 0; --index) {
         if (recordLikeHasToFollowToken(tokens[index]))
             return isRecordLikeToken(tokens, index + 1);