The warning is due to 'strncpy' with a maximum number of characters equal to the destination buffer size, without space for null termination. aiodio_sparse2.c: In function 'main': aiodio_sparse2.c:404:9: warning: 'strncpy' specified bound 4096 equals destination size [-Wstringop-truncation] 404 | strncpy(filename, argv[argc-1], PATH_MAX); However, PATH_MAX is including null termination at the end. Anyways, fix warning by setting NULL. Signed-off-by: Anand Jain <anand.jain@xxxxxxxxxx> --- src/aio-dio-regress/aiodio_sparse2.c | 1 + 1 file changed, 1 insertion(+) diff --git a/src/aio-dio-regress/aiodio_sparse2.c b/src/aio-dio-regress/aiodio_sparse2.c index 51ede5bb6c8b..685e3b9dce48 100644 --- a/src/aio-dio-regress/aiodio_sparse2.c +++ b/src/aio-dio-regress/aiodio_sparse2.c @@ -402,6 +402,7 @@ int main(int argc, char **argv) } strncpy(filename, argv[argc-1], PATH_MAX); + filename[PATH_MAX - 1] = '\0'; if (alignment == 0) alignment = get_logical_block_size(filename); -- 2.38.1
