fix optimization for hash aset/aref with fstring

Patch by Eric Wong [ruby-core:78797].
I don't like the idea of making insns.def any bigger to support
a corner case, and "test_hash_aref_fstring_identity" shows
how contrived this is.

[ruby-core:78783] [Bug #12855]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57278 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 3 deletions

diff --git a/hash.c b/hash.c
index 9cb4dcfa2e..4672934566 100644
--- a/hash.c
+++ b/hash.c
@@ -2758,8 +2758,6 @@ rb_hash_compact_bang(VALUE hash)
     return Qnil;
 }
 
-static VALUE rb_hash_compare_by_id_p(VALUE hash);
-
 /*
  *  call-seq:
  *     hsh.compare_by_identity -> hsh
@@ -2795,7 +2793,7 @@ rb_hash_compare_by_id(VALUE hash)
  *
  */
 
-static VALUE
+VALUE
 rb_hash_compare_by_id_p(VALUE hash)
 {
     if (!RHASH(hash)->ntbl)