X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Frrd_open.c;h=7c508ff27cfda33ed9bab64c7b65fae9e4e0a8e8;hb=2d99eb86ab3bc3a01be6c65502a04151335316ba;hp=5f3723f30cef086d44c6bab4a3c434b1d74e6507;hpb=9d7aa8ddae065b774fe4eb1df76a3242b9db2d53;p=rrdtool.git

diff --git a/src/rrd_open.c b/src/rrd_open.c
index 5f3723f..7c508ff 100644
--- a/src/rrd_open.c
+++ b/src/rrd_open.c
@@ -671,7 +671,7 @@ ssize_t rrd_write(
     
     if((rrd_file->pos + count) > old_size)
     {
-        rrd_set_error("attempting to write beyond end of file");
+        rrd_set_error("attempting to write beyond end of file (%ld + %ld > %ld)",rrd_file->pos, count, old_size);
         return -1;
     }
     memcpy(rrd_simple_file->file_start + rrd_file->pos, buf, count);