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-rw-r--r--src/or/buffers.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/or/buffers.c b/src/or/buffers.c
index 033f86288e..85eff36b4c 100644
--- a/src/or/buffers.c
+++ b/src/or/buffers.c
@@ -559,8 +559,8 @@ buf_clear(buf_t *buf)
}
/** Return the number of bytes stored in <b>buf</b> */
-size_t
-buf_datalen(const buf_t *buf)
+MOCK_IMPL(size_t,
+buf_datalen, (const buf_t *buf))
{
return buf->datalen;
}