[LTP] syscall02: test invalid syscall number -1

[linuxtestproject.agent@gmail.com]

Hi Andrea,

On Tue, 14 Jul 2026 11:25:40 +0200, Andrea Cervesato wrote:
> syscall02: test invalid syscall number -1

> +#include <unistd.h>
> +#include <sys/syscall.h>

<sys/syscall.h> provides SYS_* constants, but none are used here.
syscall() is declared by <unistd.h>. The include can be dropped.

> + * Verify that a raw :manpage:`syscall(2)` with the reserved system call
> + * number -1 fails with ENOSYS.

Same in the commit message body: -1 is not formally reserved by the
kernel ABI or POSIX. It is simply an out-of-range number that lands on
sys_ni_syscall. The test itself uses "invalid" in the message string,
which is the more accurate term. Worth aligning the description with
that wording.

Verdict - Needs revision

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