* parse.y: support Symbol GC. [ruby-trunk Feature #9634]

  See this ticket about Symbol GC.

* include/ruby/ruby.h:
  Declare few functions.
  * rb_sym2id: almost same as old SYM2ID but support dynamic symbols.
  * rb_id2sym: almost same as old ID2SYM but support dynamic symbols.
  * rb_sym2str: almost same as `rb_id2str(SYM2ID(sym))` but not
    pin down a dynamic symbol.
  Declare a new struct.
  * struct RSymbol: represents a dynamic symbol as object in
    Ruby's heaps.
  Add few macros.
  * STATIC_SYM_P: check a static symbol.
  * DYNAMIC_SYM_P: check a dynamic symbol.
  * RSYMBOL: cast to RSymbol

* gc.c: declare RSymbol. support T_SYMBOL.

* internal.h: Declare few functions.
  * rb_gc_free_dsymbol: free up a dynamic symbol. GC call this
    function at a sweep phase.
  * rb_str_dynamic_intern: convert a string to a dynamic symbol.
  * rb_check_id_without_pindown: not pinning function.
  * rb_sym2id_without_pindown: ditto.
  * rb_check_id_cstr_without_pindown: ditto.

* string.c (Init_String): String#intern and String#to_sym use
  rb_str_dynamic_intern.

* template/id.h.tmpl: use LSB of ID as a flag for determining a
  static symbol, so we shift left other ruby_id_types.

* string.c: use rb_sym2str instead `rb_id2str(SYM2ID(sym))` to
  avoid pinning.

* load.c: use xx_without_pindown function at creating temporary ID
  to avoid pinning.

* object.c: ditto.

* sprintf.c: ditto.

* struct.c: ditto.

* thread.c: ditto.

* variable.c: ditto.

* vm_method.c: ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45426 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 5 insertions, 5 deletions

diff --git a/vm_method.c b/vm_method.c
index 6516a0b03e..6b2eaf8f1b 100644
--- a/vm_method.c
+++ b/vm_method.c
@@ -791,7 +791,7 @@ rb_mod_remove_method(int argc, VALUE *argv, VALUE mod)
 
     for (i = 0; i < argc; i++) {
 	VALUE v = argv[i];
-	ID id = rb_check_id(&v);
+	ID id = rb_check_id_without_pindown(&v);
 	if (!id) {
 	    rb_name_error_str(v, "method `%s' not defined in %s",
 			      RSTRING_PTR(v), rb_class2name(mod));
@@ -1002,7 +1002,7 @@ rb_mod_undef_method(int argc, VALUE *argv, VALUE mod)
     int i;
     for (i = 0; i < argc; i++) {
 	VALUE v = argv[i];
-	ID id = rb_check_id(&v);
+	ID id = rb_check_id_without_pindown(&v);
 	if (!id) {
 	    rb_method_name_error(mod, v);
 	}
@@ -1042,7 +1042,7 @@ rb_mod_undef_method(int argc, VALUE *argv, VALUE mod)
 static VALUE
 rb_mod_method_defined(VALUE mod, VALUE mid)
 {
-    ID id = rb_check_id(&mid);
+    ID id = rb_check_id_without_pindown(&mid);
     if (!id || !rb_method_boundp(mod, id, 1)) {
 	return Qfalse;
     }
@@ -1056,7 +1056,7 @@ static VALUE
 check_definition(VALUE mod, VALUE mid, rb_method_flag_t noex)
 {
     const rb_method_entry_t *me;
-    ID id = rb_check_id(&mid);
+    ID id = rb_check_id_without_pindown(&mid);
     if (!id) return Qfalse;
     me = rb_method_entry(mod, id, 0);
     if (me) {
@@ -1685,7 +1685,7 @@ obj_respond_to(int argc, VALUE *argv, VALUE obj)
     ID id;
 
     rb_scan_args(argc, argv, "11", &mid, &priv);
-    if (!(id = rb_check_id(&mid))) {
+    if (!(id = rb_check_id_without_pindown(&mid))) {
 	if (!rb_method_basic_definition_p(CLASS_OF(obj), idRespond_to_missing)) {
 	    VALUE args[2];
 	    args[0] = ID2SYM(rb_to_id(mid));