mystring: fix "Illegal number" on FreeBSD & macOS for x=; echo $((x))

Op 07-03-18 om 06:26 schreef Herbert Xu:
> Martijn Dekker <martijn@inlv.org> wrote:
>>
>>> Since base is always a constant 0 or a constant 10, never a
>>> user-provided value, the only error that strtoimax will ever report on
>>> glibc systems is ERANGE. Checking only ERANGE therefore preserves the
>>> glibc behaviour, and allows the exact same set of errors to be detected
>>> on non-glibc systems.
>>
>> That makes sense, thanks.
>
> Could you resend your patch with this change please?

OK, see below.

- M.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

src/mystring.c

@@ -125,7 +125,7 @@ intmax_t atomax(const char *s, int base)
 	errno = 0;
 	r = strtoimax(s, &p, base);
-	if (errno != 0)
+	if (errno == ERANGE)
 		badnum(s);
 	/*