[src/trunk]: src/usr.bin/make make: return failure in TryParseIntBase0 for em...

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

details:   https://anonhg.NetBSD.org/src/rev/89834cccbe69
branches:  trunk
changeset: 981538:89834cccbe69
user:      rillig <rillig%NetBSD.org@localhost>
date:      Sun Mar 14 16:03:04 2021 +0000

description:
make: return failure in TryParseIntBase0 for empty string

No functional change since the only caller of TryParseIntBase0 already
handles all possible parse errors.  Without this check, the code just
looked wrong though.

diffstat:

 usr.bin/make/var.c |  7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)

diffs (28 lines):

diff -r 7c02b60f268b -r 89834cccbe69 usr.bin/make/var.c
--- a/usr.bin/make/var.c        Sun Mar 14 16:00:07 2021 +0000
+++ b/usr.bin/make/var.c        Sun Mar 14 16:03:04 2021 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: var.c,v 1.864 2021/03/14 15:43:31 rillig Exp $ */
+/*     $NetBSD: var.c,v 1.865 2021/03/14 16:03:04 rillig Exp $ */
 
 /*
  * Copyright (c) 1988, 1989, 1990, 1993
@@ -140,7 +140,7 @@
 #include "metachar.h"
 
 /*     "@(#)var.c      8.3 (Berkeley) 3/19/94" */
-MAKE_RCSID("$NetBSD: var.c,v 1.864 2021/03/14 15:43:31 rillig Exp $");
+MAKE_RCSID("$NetBSD: var.c,v 1.865 2021/03/14 16:03:04 rillig Exp $");
 
 typedef enum VarFlags {
        VFL_NONE        = 0,
@@ -2308,6 +2308,9 @@
 
        errno = 0;
        n = strtol(*pp, &end, 0);
+
+       if (end == *pp)
+               return FALSE;
        if ((n == LONG_MIN || n == LONG_MAX) && errno == ERANGE)
                return FALSE;
        if (n < INT_MIN || n > INT_MAX)