akr	2011-11-13 15:41:19 +0900 (Sun, 13 Nov 2011)

  New Revision: 33732

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=33732

  Log:
    * ext/dbm/extconf.rb: duplicate $libs and $defs when save them.

  Modified files:
    trunk/ChangeLog
    trunk/ext/dbm/extconf.rb

Index: ChangeLog
===================================================================
--- ChangeLog	(revision 33731)
+++ ChangeLog	(revision 33732)
@@ -1,3 +1,7 @@
+Sun Nov 13 15:40:43 2011  Tanaka Akira  <akr@f...>
+
+	* ext/dbm/extconf.rb: duplicate $libs and $defs when save them.
+
 Sun Nov 13 12:43:48 2011  Tanaka Akira  <akr@f...>
 
 	* ext/dbm/extconf.rb: rollback $libs and $defs when db detection is
Index: ext/dbm/extconf.rb
===================================================================
--- ext/dbm/extconf.rb	(revision 33731)
+++ ext/dbm/extconf.rb	(revision 33732)
@@ -29,8 +29,8 @@
 headers.defs = nil
 
 def headers.db_check(db)
-  old_libs = $libs
-  old_defs = $defs
+  old_libs = $libs.dup
+  old_defs = $defs.dup
   result = db_check2(db)
   if !result
     $libs = old_libs

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