I got the same warning even with ubuntu new distro, this patch fixed this issue.
$ gcc --version gcc (Ubuntu 6.3.0-12ubuntu2) 6.3.0 20170406 Copyright (C) 2016 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
$ make -v GNU Make 4.1 Built for x86_64-pc-linux-gnu Copyright (C) 1988-2014 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later http://gnu.org/licenses/gpl.html This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. $ uname -a Linux pek-lyang0-u17 4.10.0-38-generic #42-Ubuntu SMP Tue Oct 10 13:24:27 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
---------------------
memfd_test.c: In function mfd_assert_grow_write: memfd_test.c:517:19: warning: format %d expects argument of type int, but argument 2 has type size_t {aka long unsigned int} [-Wformat=] printf("malloc(%d) failed: %m\n", mfd_def_size * 8); ^ memfd_test.c: In function mfd_fail_grow_write: memfd_test.c:537:19: warning: format %d expects argument of type int, but argument 2 has type size_t {aka long unsigned int} [-Wformat=] printf("malloc(%d) failed: %m\n", mfd_def_size * 8);
Lei
On 2017年11月07日 07:46, Shuah Khan wrote:
On 11/05/2017 03:56 AM, Lei Yang wrote:
Replace '%d' by '%zu' to fix the following compilation warning.
memfd_test.c:517:3: warning: format ‘%d’ expects argument of type ‘int’,but argument 2 has type ‘size_t’ [-Wformat=] printf("malloc(%d) failed: %m\n", mfd_def_size * 8); ^ memfd_test.c: In function ‘mfd_fail_grow_write’: memfd_test.c:537:3: warning: format ‘%d’ expects argument of type ‘int’,but argument 2 has type ‘size_t’ [-Wformat=] printf("malloc(%d) failed: %m\n", mfd_def_size * 8);
Signed-off-by: Lei Yang Lei.Yang@windriver.com
tools/testing/selftests/memfd/memfd_test.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/tools/testing/selftests/memfd/memfd_test.c b/tools/testing/selftests/memfd/memfd_test.c index f94c6d1..95df9e6 100644 --- a/tools/testing/selftests/memfd/memfd_test.c +++ b/tools/testing/selftests/memfd/memfd_test.c @@ -514,7 +514,7 @@ static void mfd_assert_grow_write(int fd) buf = malloc(mfd_def_size * 8); if (!buf) {
printf("malloc(%d) failed: %m\n", mfd_def_size * 8);
printf("malloc(%zu) failed: %m\n", mfd_def_size * 8);@@ -534,7 +534,7 @@ static void mfd_fail_grow_write(int fd) buf = malloc(mfd_def_size * 8); if (!buf) {
printf("malloc(%d) failed: %m\n", mfd_def_size * 8);
printf("malloc(%zu) failed: %m\n", mfd_def_size * 8);Relates to gcc version perhaps. What's your gcc version?
thanks, -- Shuah
-- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html