bug#19599: strace test suite failures

[ludo@gnu.org (Ludovic Courtès)]

Mark H Weaver <mhw@netris.org> skribis:

> ../strace: Bad OS release string: '3.14-2-amd64'

The relevant code in strace.c in 4.7 is this:

--8<---------------cut here---------------start------------->8---
	/* u.release has this form: "3.2.9[-some-garbage]" */
	rel = 0;
	p = u.release;
	for (;;) {
		if (!(*p >= '0' && *p <= '9'))
			error_msg_and_die("Bad OS release string: '%s'", u.release);
		/* Note: this open-codes KERNEL_VERSION(): */
		rel = (rel << 8) | atoi(p);
		if (rel >= KERNEL_VERSION(1,0,0))
			break;
		while (*p >= '0' && *p <= '9')
			p++;
		if (*p != '.')
			error_msg_and_die("Bad OS release string: '%s'", u.release);
		p++;
	}
	return rel;
--8<---------------cut here---------------end--------------->8---

Basically it expects A.B.C where A, B, and C are numbers, which is not
the case on this particular build machine.

This is really an strace bug since there are occasionally two-number
version strings for Linux:
<https://www.kernel.org/pub/linux/kernel/v3.x/>.
We should report it there.

Ludo’.