[src/trunk]: src/usr.bin/make Maybe fix a problem that appeared on loonix.

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

details:   https://anonhg.NetBSD.org/src/rev/2072a3f8c245
branches:  trunk
changeset: 760075:2072a3f8c245
user:      dholland <dholland%NetBSD.org@localhost>
date:      Sat Dec 25 20:46:18 2010 +0000

description:
Maybe fix a problem that appeared on loonix.

diffstat:

 usr.bin/make/parse.c |  12 +++++++-----
 1 files changed, 7 insertions(+), 5 deletions(-)

diffs (39 lines):

diff -r 45296fcafd33 -r 2072a3f8c245 usr.bin/make/parse.c
--- a/usr.bin/make/parse.c      Sat Dec 25 20:45:49 2010 +0000
+++ b/usr.bin/make/parse.c      Sat Dec 25 20:46:18 2010 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: parse.c,v 1.171 2010/12/25 17:19:04 dholland Exp $     */
+/*     $NetBSD: parse.c,v 1.172 2010/12/25 20:46:18 dholland Exp $     */
 
 /*
  * Copyright (c) 1988, 1989, 1990, 1993
@@ -69,14 +69,14 @@
  */
 
 #ifndef MAKE_NATIVE
-static char rcsid[] = "$NetBSD: parse.c,v 1.171 2010/12/25 17:19:04 dholland Exp $";
+static char rcsid[] = "$NetBSD: parse.c,v 1.172 2010/12/25 20:46:18 dholland Exp $";
 #else
 #include <sys/cdefs.h>
 #ifndef lint
 #if 0
 static char sccsid[] = "@(#)parse.c    8.3 (Berkeley) 3/19/94";
 #else
-__RCSID("$NetBSD: parse.c,v 1.171 2010/12/25 17:19:04 dholland Exp $");
+__RCSID("$NetBSD: parse.c,v 1.172 2010/12/25 20:46:18 dholland Exp $");
 #endif
 #endif /* not lint */
 #endif
@@ -545,8 +545,10 @@
        assert(bufpos <= lf->len);
 
        /* truncate malloc region to actual length (maybe not useful) */
-       lf->len = bufpos;
-       lf->buf = bmake_realloc(lf->buf, lf->len);
+       if (lf->len > 0) {
+               lf->len = bufpos;
+               lf->buf = bmake_realloc(lf->buf, lf->len);
+       }
 
 done:
        if (path != NULL) {