4 files changed, 8 insertions, 8 deletions
diff --git a/src/array.c b/src/array.c
index 2e8cf1116..7c07295c7 100644
--- a/src/array.c
+++ b/src/array.c
@@ -255,7 +255,7 @@ mrb_ary_s_create(mrb_state *mrb, mrb_value klass)
   mrb_int len;
   struct RArray *a;
 
-  mrb_get_args(mrb, "*", &vals, &len);
+  mrb_get_args(mrb, "*!", &vals, &len);
   ary = mrb_ary_new_from_values(mrb, len, vals);
   a = mrb_ary_ptr(ary);
   a->c = mrb_class_ptr(klass);
@@ -438,7 +438,7 @@ mrb_ary_push_m(mrb_state *mrb, mrb_value self)
   mrb_value *argv;
   mrb_int len;
 
-  mrb_get_args(mrb, "*", &argv, &len);
+  mrb_get_args(mrb, "*!", &argv, &len);
   while (len--) {
     mrb_ary_push(mrb, self, *argv++);
   }
@@ -526,7 +526,7 @@ mrb_ary_unshift_m(mrb_state *mrb, mrb_value self)
   mrb_value *vals;
   mrb_int len;
 
-  mrb_get_args(mrb, "*", &vals, &len);
+  mrb_get_args(mrb, "*!", &vals, &len);
   if (len > ARY_MAX_SIZE - a->len) {
     mrb_raise(mrb, E_ARGUMENT_ERROR, "array size too big");
   }
@@ -717,7 +717,7 @@ aget_index(mrb_state *mrb, mrb_value index)
     mrb_int i, argc;
     mrb_value *argv;
 
-    mrb_get_args(mrb, "i*", &i, &argv, &argc);
+    mrb_get_args(mrb, "i*!", &i, &argv, &argc);
     return i;
   }
 }
diff --git a/src/error.c b/src/error.c
index 92f4911f6..062282719 100644
--- a/src/error.c
+++ b/src/error.c
@@ -47,7 +47,7 @@ exc_initialize(mrb_state *mrb, mrb_value exc)
   mrb_int argc;
   mrb_value *argv;
 
-  if (mrb_get_args(mrb, "|o*", &mesg, &argv, &argc) >= 1) {
+  if (mrb_get_args(mrb, "|o*!", &mesg, &argv, &argc) >= 1) {
     mrb_iv_set(mrb, exc, mrb_intern_lit(mrb, "mesg"), mesg);
   }
   return exc;
diff --git a/src/kernel.c b/src/kernel.c
index f1d7700de..bd21ddf53 100644
--- a/src/kernel.c
+++ b/src/kernel.c
@@ -981,7 +981,7 @@ mrb_obj_missing(mrb_state *mrb, mrb_value mod)
   mrb_value *a;
   mrb_int alen;
 
-  mrb_get_args(mrb, "n*", &name, &a, &alen);
+  mrb_get_args(mrb, "n*!", &name, &a, &alen);
   mrb_method_missing(mrb, name, mod, mrb_ary_new_from_values(mrb, alen, a));
   /* not reached */
   return mrb_nil_value();
diff --git a/src/string.c b/src/string.c
index bfa751332..2cc54a8cf 100644
--- a/src/string.c
+++ b/src/string.c
@@ -1597,7 +1597,7 @@ mrb_str_index(mrb_state *mrb, mrb_value str)
   mrb_value sub;
   mrb_int pos, clen;
 
-  mrb_get_args(mrb, "*", &argv, &argc);
+  mrb_get_args(mrb, "*!", &argv, &argc);
   if (argc == 2) {
     mrb_get_args(mrb, "oi", &sub, &pos);
   }
@@ -1868,7 +1868,7 @@ mrb_str_rindex(mrb_state *mrb, mrb_value str)
   mrb_value sub;
   mrb_int pos, len = RSTRING_CHAR_LEN(str);
 
-  mrb_get_args(mrb, "*", &argv, &argc);
+  mrb_get_args(mrb, "*!", &argv, &argc);
   if (argc == 2) {
     mrb_get_args(mrb, "oi", &sub, &pos);
     if (pos < 0) {