[src/trunk]: src/bin/sh Allocate alias pointers for qsort() to use on the sta...

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

details:   https://anonhg.NetBSD.org/src/rev/ed70d0a87c77
branches:  trunk
changeset: 448796:ed70d0a87c77
user:      kre <kre%NetBSD.org@localhost>
date:      Sat Feb 09 09:11:07 2019 +0000

description:
Allocate alias pointers for qsort() to use on the stack, rather than
directly via malloc() so they get cleaned up correctly on error/intr.

NFCI.

diffstat:

 bin/sh/alias.c |  14 +++++++-------
 1 files changed, 7 insertions(+), 7 deletions(-)

diffs (61 lines):

diff -r 86bb6bd5d6a3 -r ed70d0a87c77 bin/sh/alias.c
--- a/bin/sh/alias.c    Sat Feb 09 08:08:32 2019 +0000
+++ b/bin/sh/alias.c    Sat Feb 09 09:11:07 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: alias.c,v 1.20 2018/12/03 06:40:26 kre Exp $   */
+/*     $NetBSD: alias.c,v 1.21 2019/02/09 09:11:07 kre Exp $   */
 
 /*-
  * Copyright (c) 1993
@@ -37,7 +37,7 @@
 #if 0
 static char sccsid[] = "@(#)alias.c    8.3 (Berkeley) 5/4/95";
 #else
-__RCSID("$NetBSD: alias.c,v 1.20 2018/12/03 06:40:26 kre Exp $");
+__RCSID("$NetBSD: alias.c,v 1.21 2019/02/09 09:11:07 kre Exp $");
 #endif
 #endif /* not lint */
 
@@ -63,7 +63,7 @@
 STATIC int unalias(char *);
 STATIC struct alias **freealias(struct alias **, int);
 STATIC struct alias **hashalias(const char *);
-STATIC size_t countaliases(void);
+STATIC int countaliases(void);
 
 STATIC
 void
@@ -196,13 +196,13 @@
 STATIC void
 list_aliases(void)
 {
-       size_t i, j, n;
+       int i, j, n;
        const struct alias **aliases;
        const struct alias *ap;
 
        INTOFF;
        n = countaliases();
-       aliases = ckmalloc(n * sizeof aliases[0]);
+       aliases = stalloc(n * (int)(sizeof aliases[0]));
 
        j = 0;
        for (i = 0; i < ATABSIZE; i++)
@@ -221,7 +221,7 @@
                out1c('\n');
        }
 
-       ckfree(aliases);
+       stunalloc(aliases);
 }
 
 /*
@@ -230,7 +230,7 @@
  * Use this opportunity to clean up any of those
  * zombies that are no longer needed.
  */
-STATIC size_t
+STATIC int
 countaliases(void)
 {
        struct alias *ap, **app;