diff --git a/ChangeLog b/ChangeLog
index 8ac2bf1d1e..a511efc0ee 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Wed Jan 26 22:28:49 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
+
+	* vm_eval.c (rb_throw_obj): add GC guard to prevent intermediate
+	  variable from GC. [Bug #4322] [ruby-dev:43108]
+
 Wed Jan 26 10:36:28 2011  NARUSE, Yui  <naruse@ruby-lang.org>
 
 	* string.c (=~): documentation fix; the return value is nil when
diff --git a/version.h b/version.h
index 3cf2e615c3..706df0f4fe 100644
--- a/version.h
+++ b/version.h
@@ -1,13 +1,13 @@
 #define RUBY_VERSION "1.9.2"
-#define RUBY_PATCHLEVEL 174
+#define RUBY_PATCHLEVEL 175
 #define RUBY_VERSION_MAJOR 1
 #define RUBY_VERSION_MINOR 9
 #define RUBY_VERSION_TEENY 1
 
 #define RUBY_RELEASE_YEAR 2011
-#define RUBY_RELEASE_MONTH 1
-#define RUBY_RELEASE_DAY 28
-#define RUBY_RELEASE_DATE "2011-01-28"
+#define RUBY_RELEASE_MONTH 2
+#define RUBY_RELEASE_DAY 18
+#define RUBY_RELEASE_DATE "2011-02-18"
 
 #include "ruby/version.h"
 
diff --git a/vm_eval.c b/vm_eval.c
index b0718ab5f3..0afbd285d9 100644
--- a/vm_eval.c
+++ b/vm_eval.c
@@ -1437,6 +1437,7 @@ rb_throw_obj(VALUE tag, VALUE value)
     }
     if (!tt) {
 	VALUE desc = rb_inspect(tag);
+	RB_GC_GUARD(desc);
 	rb_raise(rb_eArgError, "uncaught throw %s", RSTRING_PTR(desc));
     }
     rb_trap_restore_mask();