Fix rb_interned_str: create strings with BINARY (akak ASCII_8BIT) encoding

[Bug #21842]

The documentation always stated as much, and it's consistent with the
rb_str_* family of functions.

1 files changed, 3 insertions, 3 deletions

diff --git a/encoding.c b/encoding.c
index 8bb393b471..e9510fe3c1 100644
--- a/encoding.c
+++ b/encoding.c
@@ -1367,7 +1367,7 @@ enc_names_i(st_data_t name, st_data_t idx, st_data_t args)
     VALUE *arg = (VALUE *)args;
 
     if ((int)idx == (int)arg[0]) {
-        VALUE str = rb_interned_str_cstr((char *)name);
+        VALUE str = rb_enc_interned_str_cstr((char *)name, rb_usascii_encoding());
         rb_ary_push(arg[1], str);
     }
     return ST_CONTINUE;
@@ -1873,7 +1873,7 @@ static int
 rb_enc_name_list_i(st_data_t name, st_data_t idx, st_data_t arg)
 {
     VALUE ary = (VALUE)arg;
-    VALUE str = rb_interned_str_cstr((char *)name);
+    VALUE str = rb_enc_interned_str_cstr((char *)name, rb_usascii_encoding());
     rb_ary_push(ary, str);
     return ST_CONTINUE;
 }
@@ -1921,7 +1921,7 @@ rb_enc_aliases_enc_i(st_data_t name, st_data_t orig, st_data_t arg)
         str = rb_fstring_cstr(rb_enc_name(enc));
         rb_ary_store(ary, idx, str);
     }
-    key = rb_interned_str_cstr((char *)name);
+    key = rb_enc_interned_str_cstr((char *)name, rb_usascii_encoding());
     rb_hash_aset(aliases, key, str);
     return ST_CONTINUE;
 }