bug#23949: 25.0.95; Regression in handling error caused by (string-match-p "." nil)

[Noam Postavsky]

On Tue, Jul 12, 2016 at 2:35 PM, Kaushal Modi <kaushal.modi@gmail.com> wrote:
> (gdb) xstring
> $16 = (struct Lisp_String *) 0x33a14e0
> "(nilory is relative, it is com"
> (gdb) xtype
> Argument to arithmetic operation not a number or boolean.
> (gdb)
>
> I do not know what to make out of that.

I think you have to use xtype before xstring (otherwise it applies to
$16, the return value from xstring).