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jochen pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/commons-io.git


The following commit(s) were added to refs/heads/master by this push:
     new fe7543e  IO-556: Protecting against regression.
fe7543e is described below

commit fe7543eee5cd4b2f9e78aa44c31031b68eba204d
Author: Jochen Wiedmann <jochen.wiedm...@gmail.com>
AuthorDate: Fri Apr 9 21:19:34 2021 +0200

    IO-556: Protecting against regression.
---
 src/test/java/org/apache/commons/io/FilenameUtilsTestCase.java | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/test/java/org/apache/commons/io/FilenameUtilsTestCase.java 
b/src/test/java/org/apache/commons/io/FilenameUtilsTestCase.java
index 559c111..ab1030b 100644
--- a/src/test/java/org/apache/commons/io/FilenameUtilsTestCase.java
+++ b/src/test/java/org/apache/commons/io/FilenameUtilsTestCase.java
@@ -272,6 +272,9 @@ public class FilenameUtilsTestCase {
         assertEquals(null, 
FilenameUtils.normalize("\\\\g:2:3:4:5:6:7:8\\a\\b\\c.txt"));
         assertEquals(null, 
FilenameUtils.normalize("\\\\1ffff:2:3:4:5:6:7:8\\a\\b\\c.txt"));
         assertEquals(null, FilenameUtils.normalize("\\\\1:2\\a\\b\\c.txt"));
+        // IO-556
+        assertEquals(null, FilenameUtils.normalize("//../foo"));
+        assertEquals(null, FilenameUtils.normalize("\\\\..\\foo"));
     }
 
     /**

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