1 files changed, 2 insertions, 1 deletions
diff --git a/variable.c b/variable.c
index f27b73841b..d97c7eff1a 100644
--- a/variable.c
+++ b/variable.c
@@ -310,7 +310,8 @@ rb_class_name(VALUE klass)
 const char *
 rb_class2name(VALUE klass)
 {
-    return RSTRING_PTR(rb_class_name(klass));
+    VALUE name = rb_class_name(klass);
+    return RSTRING_PTR(name);
 }
 
 const char *