cmake: re-enable -Werror in the maintainer mode

now we can afford it. Fix -Werror errors. Note:
* old gcc is bad at detecting uninit variables, disable it.
* time_t is int or long, cast it for printf's

1 files changed, 1 insertions, 1 deletions

diff --git a/unittest/sql/mf_iocache-t.cc b/unittest/sql/mf_iocache-t.cc
index 97b2ef0f80f..51656c02e57 100644
--- a/unittest/sql/mf_iocache-t.cc
+++ b/unittest/sql/mf_iocache-t.cc
@@ -356,7 +356,7 @@ void mdev17133()
       // random size 2nd read
       res= my_b_read(&info, buf_i + total + MY_MIN(19, curr_read_size),
                      19 >= curr_read_size ? 0 : curr_read_size - 19);
-      ok(res == 0, "rest of read %lu", curr_read_size - 19);
+      ok(res == 0, "rest of read %zu", curr_read_size - 19);
       // mark read bytes in the used part of the cache buffer
       memset(info.buffer, 0, info.read_pos - info.buffer);