fronzen-string-literal pragma

* compile.c (iseq_compile_each): override compile option by option
  given by pragma.
* iseq.c (rb_iseq_make_compile_option): extract a function to
  overwrite rb_compile_option_t.
* parse.y (parser_set_compile_option_flag): introduce pragma to
  override compile options.
* parse.y (magic_comments): new pragma "fronzen-string-literal".
  [Feature #8976]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51953 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 3 insertions, 1 deletions

diff --git a/node.c b/node.c
index 79f65ec684..1153431206 100644
--- a/node.c
+++ b/node.c
@@ -804,8 +804,10 @@ dump_node(VALUE buf, VALUE indent, int comment, NODE *node)
 	ANN("format: BEGIN { [nd_head] }; [nd_body]");
 	ANN("example: bar; BEGIN { foo }");
 	F_NODE(nd_head, "prelude");
-	LAST_NODE;
 	F_NODE(nd_body, "body");
+	LAST_NODE;
+#define nd_compile_option u3.value
+	F_LIT(nd_compile_option, "compile_option");
 	break;
 
       case NODE_LAMBDA: