diff --git a/ChangeLog b/ChangeLog
index 7d3508490f..c609c0d145 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Sat Feb 16 20:12:47 2008  Tanaka Akira  <akr@fsij.org>
+
+	* re.c (match_inspect): avoid SEGV with MatchData.allocate.inspect.
+
 Sat Feb 16 19:04:17 2008  NARUSE, Yui  <naruse@ruby-lang.org>
 
 	* string.c (str_strlen): revert r15507. [ruby-dev:33810]
diff --git a/re.c b/re.c
index 4867104250..90dae9ba9e 100644
--- a/re.c
+++ b/re.c
@@ -1510,6 +1510,10 @@ match_inspect(VALUE match)
     struct backref_name_tag *names;
     VALUE regexp = RMATCH(match)->regexp;
 
+    if (regexp == 0) {
+        return rb_sprintf("#<%s:%p>", cname, (void*)match);
+    }
+
     names = ALLOCA_N(struct backref_name_tag, num_regs);
     MEMZERO(names, struct backref_name_tag, num_regs);