Enable refinements on symbol-proc in ruby-level methods

* vm_args.c (refine_sym_proc_call): resolve refinements when the
  proc is invoked, instead of resolving at making the proc, to
  enable refinements on symbol-proc in ruby-level methods

* vm.c (vm_cref_dup): clear cached symbol-procs when duplicating.

[Bug #15114] [Fix GH-2039]

From: manga_osyo <manga.osyo@gmail.com>

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66439 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 9 insertions, 1 deletions

diff --git a/vm.c b/vm.c
index 7b79ca9890..d5434697b2 100644
--- a/vm.c
+++ b/vm.c
@@ -229,6 +229,12 @@ vm_cref_new_use_prev(VALUE klass, rb_method_visibility_t visi, int module_func,
     return vm_cref_new0(klass, visi, module_func, prev_cref, pushed_by_eval, TRUE);
 }
 
+static int
+ref_delete_symkey(VALUE key, VALUE value, VALUE unused)
+{
+    return SYMBOL_P(key) ? ST_DELETE : ST_CONTINUE;
+}
+
 static rb_cref_t *
 vm_cref_dup(const rb_cref_t *cref)
 {
@@ -240,7 +246,9 @@ vm_cref_dup(const rb_cref_t *cref)
     new_cref = vm_cref_new(klass, visi->method_visi, visi->module_func, next_cref, pushed_by_eval);
 
     if (!NIL_P(CREF_REFINEMENTS(cref))) {
-	CREF_REFINEMENTS_SET(new_cref, rb_hash_dup(CREF_REFINEMENTS(cref)));
+        VALUE ref = rb_hash_dup(CREF_REFINEMENTS(cref));
+        rb_hash_foreach(ref, ref_delete_symkey, Qnil);
+        CREF_REFINEMENTS_SET(new_cref, ref);
 	CREF_OMOD_SHARED_UNSET(new_cref);
     }