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-rw-r--r--src/or/rendcommon.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/or/rendcommon.c b/src/or/rendcommon.c
index a9a561b09c..0b97e2141e 100644
--- a/src/or/rendcommon.c
+++ b/src/or/rendcommon.c
@@ -514,7 +514,7 @@ rend_encode_v2_descriptors(smartlist_t *descs_out,
ipos_base64 = tor_malloc_zero(ipos_len * 2);
if (base64_encode(ipos_base64, ipos_len * 2, ipos, ipos_len)<0) {
log_warn(LD_REND, "Could not encode introduction point string to "
- "base64. length=%d", ipos_len);
+ "base64. length=%d", (int)ipos_len);
tor_free(ipos_base64);
tor_free(ipos);
return -1;