mame	2010-07-06 00:57:20 +0900 (Tue, 06 Jul 2010)

  New Revision: 28548

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=28548

  Log:
    * vm.c (thread_free): free altstack to prevent memory leak.  a patch
      from Tomoyuki Chikanaga in [ruby-dev:41815]. [Bug #3537]

  Modified files:
    trunk/ChangeLog
    trunk/vm.c

Index: ChangeLog
===================================================================
--- ChangeLog	(revision 28547)
+++ ChangeLog	(revision 28548)
@@ -1,3 +1,8 @@
+Tue Jul  6 00:34:50 2010  Yusuke Endoh  <mame@t...>
+
+	* vm.c (thread_free): free altstack to prevent memory leak.  a patch
+	  from Tomoyuki Chikanaga in [ruby-dev:41815]. [Bug #3537]
+
 Tue Jul  6 00:29:27 2010  Yusuke Endoh  <mame@t...>
 
 	* string.c (NONASCII_MASK): NONASCII_MASK must be unsigned.
Index: vm.c
===================================================================
--- vm.c	(revision 28547)
+++ vm.c	(revision 28548)
@@ -1726,6 +1726,11 @@
 	    RUBY_GC_INFO("main thread\n");
 	}
 	else {
+#ifdef USE_SIGALTSTACK
+	    if (th->altstack) {
+		free(th->altstack);
+	    }
+#endif
 	    ruby_xfree(ptr);
 	}
     }

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