bugzilla 44731: index out of bound in globmapper (due to overlap)

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@644043 13f79535-47bb-0310-9956-ffa450edef68

src/main/org/apache/tools/ant/util/GlobPatternMapper.java

@@ -132,7 +132,9 @@ public class GlobPatternMapper implements FileNameMapper {
     public String[] mapFileName(String sourceFileName) {
         if (fromPrefix == null
             || !modifyName(sourceFileName).startsWith(modifyName(fromPrefix))
-            || !modifyName(sourceFileName).endsWith(modifyName(fromPostfix))) {
+            || !modifyName(sourceFileName).endsWith(modifyName(fromPostfix))
+            || (sourceFileName.length() < (prefixLength + postfixLength))
+            ) {
             return null;
         }
         return new String[] {toPrefix