commit 16a9af0a12329871e1bce30e10c2c3f7bf5d4942
author Martin Balao <mbalao@openjdk.org> Wed Mar 09 21:16:49 2022 +0000
committer Christoph Langer <clanger@openjdk.org> Fri Apr 08 07:42:40 2022 +0200
tree 4c1b67d5e4a796a465877e962554921c34f6782a
parent ab8d162abb4f2ebb6e5e234cc7eb15bf96ef8afe

8282397: createTempFile method of java.io.File is failing when called with suffix of spaces character

Reviewed-by: mbaesken
Backport-of: d48181536fa9b99f01fc80f8adb73777ec6ffa58

src/java.base/windows/classes/java/io/WinNTFileSystem.java

diff --git a/src/java.base/windows/classes/java/io/WinNTFileSystem.java b/src/java.base/windows/classes/java/io/WinNTFileSystem.java
index f912fa0..a45fd3e 100644
--- a/src/java.base/windows/classes/java/io/WinNTFileSystem.java
+++ b/src/java.base/windows/classes/java/io/WinNTFileSystem.java
@@ -331,9 +331,12 @@
         // is a ":" at position 1 and the first character is not a letter
         String pathname = f.getPath();
         int lastColon = pathname.lastIndexOf(":");
-        if (lastColon > 1 ||
-            (lastColon == 1 && !isLetter(pathname.charAt(0))))
-            return true;
+
+        // Valid if there is no ":" present or if the last ":" present is
+        // at index 1 and the first character is a latter
+        if (lastColon < 0 ||
+            (lastColon == 1 && isLetter(pathname.charAt(0))))
+            return false;
 
         // Invalid if path creation fails
         Path path = null;