diff --git a/ChangeLog b/ChangeLog
index 99c056c731..e07088c476 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Fri Feb 18 00:28:39 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
+
+	* compile.c (get_exception_sym2type): guard temporary object from GC.
+
 Thu Feb 17 23:54:29 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
 
 	* iseq.c (prepare_iseq_build): initialize iseq_compile_data::err_info
diff --git a/compile.c b/compile.c
index 459a3999ff..c5364ca0b2 100644
--- a/compile.c
+++ b/compile.c
@@ -5190,6 +5190,7 @@ get_exception_sym2type(VALUE sym)
 {
 #undef rb_intern
 #define rb_intern(str) rb_intern_const(str)
+    VALUE sym_inspect;
     static VALUE symRescue, symEnsure, symRetry;
     static VALUE symBreak, symRedo, symNext;
 
@@ -5208,8 +5209,9 @@ get_exception_sym2type(VALUE sym)
     if (sym == symBreak)  return CATCH_TYPE_BREAK;
     if (sym == symRedo)   return CATCH_TYPE_REDO;
     if (sym == symNext)   return CATCH_TYPE_NEXT;
+    sym_inspect = rb_inspect(sym);
     rb_raise(rb_eSyntaxError, "invalid exception symbol: %s",
-	     RSTRING_PTR(rb_inspect(sym)));
+	     RSTRING_PTR(RB_GC_GUARD(sym_inspect)));
     return 0;
 }