string.c: reduce objects in rb_fstring

* string.c (rb_fstring, rb_str_free): use st_data_t instead of VALUE.
* string.c (rb_fstring): get rid of duplicating already frozen object.
* parse.y (str_suffix_gen): freeze in advance to reduce objects.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42846 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 0 deletions

diff --git a/parse.y b/parse.y
index d17591253c..6cfb9421d2 100644
--- a/parse.y
+++ b/parse.y
@@ -8561,6 +8561,7 @@ str_suffix_gen(struct parser_params *parser, NODE *node, long opt)
 #endif
 #if STR_OPTION_FROZEN
 	if (opt & STR_OPTION_FROZEN) {
+	    OBJ_FREEZE(node->nd_lit);
 	    node->nd_lit = rb_fstring(node->nd_lit);
 	    nd_set_type(node, NODE_LIT);
 	}