diff --git a/ChangeLog b/ChangeLog
index 7515897e09..e87c0c5e4e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Tue Dec 13 12:23:47 2005  Tanaka Akira  <akr@m17n.org>
+
+	* re.c (rb_reg_regcomp): fix a GC problem on x86_64 with
+	  gcc 3.3.5 (Debian 1:3.3.5-13).
+
 Tue Dec 13 01:44:16 2005  Tanaka Akira  <akr@m17n.org>
 
 	* array.c (rb_ary_diff): fix a GC problem on IA64 with
diff --git a/re.c b/re.c
index ed51ee4838..66d9971854 100644
--- a/re.c
+++ b/re.c
@@ -1408,6 +1408,7 @@ VALUE
 rb_reg_regcomp(str)
     VALUE str;
 {
+    volatile VALUE save_str = str;
     if (reg_cache && RREGEXP(reg_cache)->len == RSTRING(str)->len
 	&& case_cache == ruby_ignorecase
 	&& kcode_cache == reg_kcode