Fix more keyword separation issues

This fixes instance_exec and similar methods. It also fixes
Enumerator::Yielder#yield, rb_yield_block, and a couple of cases
with Proc#{<<,>>}.

This support requires the addition of rb_yield_values_kw, similar to
rb_yield_values2, for passing the keyword flag.

Unlike earlier attempts at this, this does not modify the rb_block_call_func
type or add a separate function type.  The functions of type
rb_block_call_func are called by Ruby with a separate VM frame, and we can
get the keyword flag information from the VM frame flags, so it doesn't need
to be passed as a function argument.

These changes require the following VM functions accept a keyword flag:

* vm_yield_with_cref
* vm_yield
* vm_yield_with_block

1 files changed, 2 insertions, 2 deletions

diff --git a/enumerator.c b/enumerator.c
index 63322197d6..9eb530c91b 100644
--- a/enumerator.c
+++ b/enumerator.c
@@ -1320,7 +1320,7 @@ yielder_yield(VALUE obj, VALUE args)
 {
     struct yielder *ptr = yielder_ptr(obj);
 
-    return rb_proc_call(ptr->proc, args);
+    return rb_proc_call_kw(ptr->proc, args, RB_PASS_CALLED_KEYWORDS);
 }
 
 /* :nodoc: */
@@ -1357,7 +1357,7 @@ yielder_to_proc(VALUE obj)
 static VALUE
 yielder_yield_i(RB_BLOCK_CALL_FUNC_ARGLIST(obj, memo))
 {
-    return rb_yield_values2(argc, argv);
+    return rb_yield_values_kw(argc, argv, RB_PASS_CALLED_KEYWORDS);
 }
 
 static VALUE