* variable.c (rb_class2name): call rb_tmp_class_path() directly to avoid extra rb_str_dup() from rb_class_name().

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43365 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 4 insertions, 2 deletions

diff --git a/variable.c b/variable.c
index fa4a769b33..1614afb742 100644
--- a/variable.c
+++ b/variable.c
@@ -385,8 +385,10 @@ rb_class_name(VALUE klass)
 const char *
 rb_class2name(VALUE klass)
 {
-    VALUE name = rb_class_name(klass);
-    return RSTRING_PTR(name);
+    int permanent;
+    VALUE path = rb_tmp_class_path(klass, &permanent, rb_ivar_set);
+    if (NIL_P(path)) return NULL;
+    return RSTRING_PTR(path);
 }
 
 const char *