Use identhash as WeakMap

As ObjectSpace::WeakMap allows FLONUM as a key, needs the special
deal for its hash.  [Feature #16035]

1 files changed, 2 insertions, 1 deletions

diff --git a/hash.c b/hash.c
index 9b5f978dd9..b73ade7c01 100644
--- a/hash.c
+++ b/hash.c
@@ -330,7 +330,8 @@ rb_ident_hash(st_data_t n)
     return (st_index_t)st_index_hash((st_index_t)n);
 }
 
-static const struct st_hash_type identhash = {
+#define identhash rb_hashtype_ident
+const struct st_hash_type rb_hashtype_ident = {
     rb_ident_cmp,
     rb_ident_hash,
 };