JDK_DEBUG_IMAGE_DIR

[Martin Buchholz]

The only reference to JDK_DEBUG_IMAGE_DIR
in the jdk workspace is

./make/common/Release.gmk:1239:	$(RM) -r $(JDK_DEBUG_IMAGE_DIR)

This variable is defined nowhere.

As a result, "make images-clobber" runs the command

rm -f -r

This is Mostly Harmless, but what would happen if a user happened to
have defined an environment variable

JDK_DEBUG_IMAGE_DIR=/

so I consider this a P2 bug.

Just remove that line from Release.gmk.

For bonus points, write a script to find all never-defined MAKE variables
in all the JDK makefiles.

# HG changeset patch
# User martin
# Date 1211056134 25200
# Node ID 9149e388e6e353da275887a0e6b4ae5ef63b4689
# Parent  1483094a7c17de9c594d51e0f0785d24e3858392
[mq]: JDK_DEBUG_IMAGE_DIR.patch

diff --git a/make/common/Release.gmk b/make/common/Release.gmk
--- a/make/common/Release.gmk
+++ b/make/common/Release.gmk
@@ -1236,7 +1236,6 @@ ifeq ($(PLATFORM), windows)
 	$(RM) $(TEMPDIR)/rebase.input
 endif
 	$(RM) -r $(JDK_IMAGE_DIR)
-	$(RM) -r $(JDK_DEBUG_IMAGE_DIR)
 	$(RM) -r $(JRE_IMAGE_DIR)

 images images-clobber::