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-rw-r--r--encoding.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/encoding.c b/encoding.c
index df3d65cd48..b1afc87bd2 100644
--- a/encoding.c
+++ b/encoding.c
@@ -747,6 +747,9 @@ rb_enc_get_index(VALUE obj)
obj = rb_id2str(SYM2ID(obj));
}
switch (BUILTIN_TYPE(obj)) {
+ case T_SYMBOL:
+ obj = RSYMBOL(obj)->fstr;
+ /* fall through */
as_default:
default:
case T_STRING: