[src/netbsd-6]: src/external/historical/nawk/dist Pull up following revision(...

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

details:   https://anonhg.NetBSD.org/src/rev/ae5e4784f897
branches:  netbsd-6
changeset: 775721:ae5e4784f897
user:      riz <riz%NetBSD.org@localhost>
date:      Thu Mar 14 15:54:58 2013 +0000

description:
Pull up following revision(s) (requested by cheusov in ticket #836):
        external/historical/nawk/dist/tran.c: revision 1.8
PR/47553: Aleksev Cheusov: awk segfault: NULL dereference.

diffstat:

 external/historical/nawk/dist/tran.c |  2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diffs (12 lines):

diff -r 83999cd3de98 -r ae5e4784f897 external/historical/nawk/dist/tran.c
--- a/external/historical/nawk/dist/tran.c      Thu Mar 14 15:48:28 2013 +0000
+++ b/external/historical/nawk/dist/tran.c      Thu Mar 14 15:54:58 2013 +0000
@@ -344,7 +344,7 @@
                donefld = 0;    /* mark $1... invalid */
                donerec = 1;
        }
-       t = tostring(s);        /* in case it's self-assign */
+       t = s ? tostring(s) : tostring("");     /* in case it's self-assign */
        if (freeable(vp))
                xfree(vp->sval);
        vp->tval &= ~NUM;