Kernel#initialize should not break existing mt; fix #3397

This issue was reported by https://hackerone.com/icanthack The solution is suggested by @clayton-shopify.
mruby · Jan 12, 2017 · 38acb9ec36bdd56123e6680885499fbf7f729f21 · 38acb9e
1 parent 41eff63
commit 38acb9ec36bdd56123e6680885499fbf7f729f21
Unified Split

Showing with 3 additions and 1 deletion.

+3 −1 src/class.c
diff --git a/src/class.c b/src/class.c
@@ -915,7 +915,9 @@ boot_defclass(mrb_state *mrb, struct RClass *super)
 static void
 boot_initmod(mrb_state *mrb, struct RClass *mod)
 {
-  mod->mt = kh_init(mt, mrb);
+  if (!mod->mt) {
+    mod->mt = kh_init(mt, mrb);
+  }
 }

 static struct RClass*