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Fixed small bug in InheritableThreadLocal

From: Mark Wielaard
Subject: Fixed small bug in InheritableThreadLocal
Date: Wed, 3 Oct 2001 00:34:17 +0200
User-agent: Mutt/1.3.22i


when adding InheritableThreadLocal to libgcj I found a small bug.
When you would call get() from within an overridden childValue()
method the heritage set would be modified while in the process of
being iterated in the newChildThread() method. This has been
fixed by the following patch which I have checked in.

    * java/lang/ (addToHeritage): check if this
      local is already contained in the heritage before adding it.



-- classpath/classpath/java/lang/    2000/05/30
22:02:34        1.1
+++ classpath/classpath/java/lang/   2001/10/02
22:27:22        1.2
@@ -122,7 +122,9 @@
                                threadMap.put(currentThread, heritage);
-               heritage.add(this);
+               if (!heritage.contains(this)) {
+                       heritage.add(this);
+               }

Stuff to read:
  What's Wrong with Copy Protection, by John Gilmore

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