Prohibit array changes by `mrb_get_argv()`

The `mrb_get_argv()` function will now return `const mrb_value *`.
This is because it is difficult for the caller to check if it is a splat argument (array object) and to write-barrier if necessary.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/class.c b/src/class.c
index bbf64e8ea..eb472900c 100644
--- a/src/class.c
+++ b/src/class.c
@@ -806,7 +806,7 @@ mrb_get_argc(mrb_state *mrb)
   return argc;
 }
 
-MRB_API mrb_value*
+MRB_API const mrb_value*
 mrb_get_argv(mrb_state *mrb)
 {
   mrb_int argc = mrb->c->ci->argc;