* range.c (range_inspect): fix SEGV for cyclic range object.

  [ruby-core:18835]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19557 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 19 insertions, 10 deletions

diff --git a/range.c b/range.c
index 09dc762acf..5c77e03f73 100644
--- a/range.c
+++ b/range.c
@@ -663,6 +663,24 @@ range_to_s(VALUE range)
     return str;
 }
 
+static VALUE
+inspect_range(VALUE range, VALUE dummy, int recur)
+{
+    VALUE str, str2;
+
+    if (recur) {
+	return rb_str_new2(EXCL(range) ? "(... ... ...)" : "(... .. ...)");
+    }
+    str = rb_inspect(RANGE_BEG(range));
+    str2 = rb_inspect(RANGE_END(range));
+    str = rb_str_dup(str);
+    rb_str_cat(str, "...", EXCL(range) ? 3 : 2);
+    rb_str_append(str, str2);
+    OBJ_INFECT(str, str2);
+
+    return str;
+}
+
 /*
  * call-seq:
  *   rng.inspect  => string
@@ -676,16 +694,7 @@ range_to_s(VALUE range)
 static VALUE
 range_inspect(VALUE range)
 {
-    VALUE str, str2;
-
-    str = rb_inspect(RANGE_BEG(range));
-    str2 = rb_inspect(RANGE_END(range));
-    str = rb_str_dup(str);
-    rb_str_cat(str, "...", EXCL(range) ? 3 : 2);
-    rb_str_append(str, str2);
-    OBJ_INFECT(str, str2);
-
-    return str;
+    return rb_exec_recursive(inspect_range, range, 0);
 }
 
 /*