regex: don't loop 10000 identical matches to find a single $ anchor

Change-Id: Ic130ecc4b0b6d58ba7ef063040bd9a11a90db425
2013-03-09 18:50:33 +01:00
parent 3bc5cb3c48
commit ccc349d3ab
1 changed files with 5 additions and 0 deletions
@@ -752,6 +752,11 @@ SearchResult TextSearch::RESrchFrwrd( const OUString& searchStr,
        int nEndOfs = pRegexMatcher->end( nIcuErr);
        if( nStartOfs < nEndOfs)
            break;
+        // If the zero-length match is behind the string, do not match it again
+        // and again until startPos reaches there. A match behind the string is
+        // a "$" anchor.
+        if (nStartOfs == endPos)
+            break;
        // try at next position if there was a zero-length match
        if( ++startPos >= endPos)
            return aRet;