Stop using rb_fstring publicly

rb_fstring is a private API, so we should use rb_str_to_interned_str
instead, which is a public API.

1 files changed, 0 insertions, 1 deletions

diff --git a/string.c b/string.c
index 24dd29b32e..8ed058eead 100644
--- a/string.c
+++ b/string.c
@@ -398,7 +398,6 @@ fstr_update_callback(st_data_t *key, st_data_t *value, st_data_t data, int exist
     }
 }
 
-RUBY_FUNC_EXPORTED
 VALUE
 rb_fstring(VALUE str)
 {