add comment about safety of cast

1 files changed, 1 insertions, 0 deletions

diff --git a/pop_lib.c b/pop_lib.c
index 42908732..d8cc9eaa 100644
--- a/pop_lib.c
+++ b/pop_lib.c
@@ -498,6 +498,7 @@ int pop_fetch_data (POP_DATA *pop_data, char *query, progress_t *progressbar,
     strfcpy (inbuf + lenbuf, p, sizeof (buf));
     pos += chunk;
 
+    /* cast is safe since we break out of the loop when chunk<=0 */
     if ((size_t)chunk >= sizeof (buf))
     {
       lenbuf += strlen (p);