[src/trunk]: src/lib/libc/stdlib Distinguish invalid syntax from trailing gar...

[riastradh <riastradh%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/459399484154
branches:  trunk
changeset: 818881:459399484154
user:      riastradh <riastradh%NetBSD.org@localhost>
date:      Fri Nov 04 20:14:31 2016 +0000

description:
Distinguish invalid syntax from trailing garbage cases.  Clarify.

diffstat:

 lib/libc/stdlib/strtol.3 |  6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diffs (21 lines):

diff -r ee2a8e6a0d4e -r 459399484154 lib/libc/stdlib/strtol.3
--- a/lib/libc/stdlib/strtol.3  Fri Nov 04 20:06:09 2016 +0000
+++ b/lib/libc/stdlib/strtol.3  Fri Nov 04 20:14:31 2016 +0000
@@ -1,4 +1,4 @@
-.\"    $NetBSD: strtol.3,v 1.35 2015/11/13 16:00:32 christos Exp $
+.\"    $NetBSD: strtol.3,v 1.36 2016/11/04 20:14:31 riastradh Exp $
 .\"
 .\" Copyright (c) 1990, 1991, 1993
 .\"    The Regents of the University of California.  All rights reserved.
@@ -225,8 +225,10 @@
 
 errno = 0;
 lval = strtol(buf, \*[Am]ep, 10);
-if (buf[0] == '\e0' || *ep != '\e0')
+if (ep == buf)
        goto not_a_number;
+if (*ep != '\e0')
+       goto trailing_garbage;
 if (errno == ERANGE \*[Am]\*[Am] (lval == LONG_MAX || lval == LONG_MIN))
        goto out_of_range;
 .Ed