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-rw-r--r--io.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/io.c b/io.c
index e69fc9dc46..4017778e0c 100644
--- a/io.c
+++ b/io.c
@@ -2860,8 +2860,8 @@ rb_io_each_codepoint(VALUE io)
c = rb_enc_codepoint(fptr->cbuf+fptr->cbuf_off,
fptr->cbuf+fptr->cbuf_off+fptr->cbuf_len,
fptr->encs.enc);
- fptr->rbuf_off += n;
- fptr->rbuf_len -= n;
+ fptr->cbuf_off += n;
+ fptr->cbuf_len -= n;
rb_yield(UINT2NUM(c));
}
}