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-rw-r--r--encoding.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/encoding.c b/encoding.c
index 3253bfdd24..8a2f9dbfb9 100644
--- a/encoding.c
+++ b/encoding.c
@@ -1297,6 +1297,7 @@ rb_enc_aliases_enc_i(st_data_t name, st_data_t orig, st_data_t arg)
if (NIL_P(str)) {
rb_encoding *enc = rb_enc_from_index(idx);
+ if (!enc) return ST_CONTINUE;
if (STRCASECMP((char*)name, rb_enc_name(enc)) == 0) {
return ST_CONTINUE;
}