tests/qtest: migration-test: Fix [-Werror=format-overflow=] build warning
commitb1f6208cf986a60e1c9f8b960db5a00851f48f98
authorBin Meng <bin.meng@windriver.com>
Mon, 17 Oct 2022 13:20:22 +0000 (17 21:20 +0800)
committerLaurent Vivier <laurent@vivier.eu>
Sat, 22 Oct 2022 21:16:37 +0000 (22 23:16 +0200)
tree235e6aa7bb9df2f8f079109efb078ba6f871ba5c
parent0a553c12c71d5627abf223a926ab9688a5573f54
tests/qtest: migration-test: Fix [-Werror=format-overflow=] build warning

When tmpfs is NULL, a build warning is seen with GCC 9.3.0.
It's strange that GCC 11.2.0 on Ubuntu 22.04 does not catch this,
neither did the QEMU CI.

While we are here, improve the error message as well.

Reported-by: Shengjiang Wu <shengjiang.wu@windriver.com>
Fixes: e5553c1b8d28 ("tests/qtest: migration-test: Avoid using hardcoded /tmp")
Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20221017132023.2228641-1-bmeng.cn@gmail.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
tests/qtest/migration-test.c