compile.c, vm_insnhelper.c: flip-flop without hidden string key

* compile.c (iseq_compile_each): count flip-flop state in local iseq
  not in each iseqs, so that the keys can be other than hidden
  strings.  [ruby-core:47253] [Bug #6899]
* vm_insnhelper.c (lep_svar_get, lep_svar_set, vm_getspecial): store
  flip-flop states in an array instead of a hash.
* iseq.c (set_relation): main iseq also can has local scope.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38292 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 2 insertions, 0 deletions

diff --git a/iseq.h b/iseq.h
index 47aaa1a7c8..4a7965adf9 100644
--- a/iseq.h
+++ b/iseq.h
@@ -131,6 +131,8 @@ enum defined_type {
 
 VALUE rb_iseq_defined_string(enum defined_type type);
 
+#define DEFAULT_SPECIAL_VAR_COUNT 2
+
 #if defined __GNUC__ && __GNUC__ >= 4
 #pragma GCC visibility pop
 #endif