* re.c (match_inspect): avoid SEGV with MatchData.allocate.inspect.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@15509 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 4 insertions, 0 deletions

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);