1 files changed, 12 insertions, 0 deletions
diff --git a/iseq.c b/iseq.c
index 967b142425..de0bae7234 100644
--- a/iseq.c
+++ b/iseq.c
@@ -21,6 +21,8 @@
 
 VALUE rb_cISeq;
 
+#define hidden_obj_p(obj) (!SPECIAL_CONST_P(obj) && !RBASIC(obj)->klass)
+
 static void
 compile_data_free(struct iseq_compile_data *compile_data)
 {
@@ -699,6 +701,16 @@ insn_operand_intern(rb_iseq_t *iseq,
 	op = ID2SYM(op);
 
       case TS_VALUE:		/* VALUE */
+	if (hidden_obj_p(op)) {
+	    switch (BUILTIN_TYPE(op)) {
+	      case T_STRING:
+		op = rb_str_replace(rb_str_new(0, 0), op);
+		break;
+	      case T_ARRAY:
+		op = rb_ary_replace(rb_ary_new2(0), op);
+		break;
+	    }
+	}
 	ret = rb_inspect(op);
 	if (CLASS_OF(op) == rb_cISeq) {
 	    rb_ary_push(child, op);