Fix a potential integer overflow

Because nr_files and new_size are not same types.It can cause new_size
less than zero.Then realloc will be failed.

Signed-off-by: Jianpeng Ma <majianpeng@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/filesetup.c b/filesetup.c
index b1ca9217c1f30a1a7bb8eec6452f1c0ecb8c1316..69eb37cd70ea9192606cc6bd4226f09f68216621 100644 (file)
--- a/filesetup.c
+++ b/filesetup.c
@@ -1074,7 +1074,7 @@ int add_file(struct thread_data *td, const char *fname)
        fio_file_reset(f);
 
        if (td->files_size <= td->files_index) {
-               int new_size = td->o.nr_files + 1;
+               unsigned int new_size = td->o.nr_files + 1;
 
                dprint(FD_FILE, "resize file array to %d files\n", new_size);