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, 1 insertions, 1 deletions

diff --git a/ext/-test-/iter/yield.c b/ext/-test-/iter/yield.c
index 3cd408a928..0f6f3e87eb 100644
--- a/ext/-test-/iter/yield.c
+++ b/ext/-test-/iter/yield.c
@@ -4,7 +4,7 @@ static VALUE
 yield_block(int argc, VALUE *argv, VALUE self)
 {
     rb_check_arity(argc, 1, UNLIMITED_ARGUMENTS);
-    return rb_block_call(self, rb_to_id(argv[0]), argc-1, argv+1, rb_yield_block, 0);
+    return rb_block_call_kw(self, rb_to_id(argv[0]), argc-1, argv+1, rb_yield_block, 0, RB_PASS_CALLED_KEYWORDS);
 }
 
 void