Bug#382638: bsdmainutils: [column] -t segfaults on empty column

[Roland Rosenfeld]

Package: bsdmainutils
Version: 6.1.3
Severity: normal
Tags: patch

"column -t -s," segfaults with the following input:

-------------- schnipp --------------
foo,bar
,
-------------- schnipp --------------

The attached patch solves this bug.

-- System Information:
Debian Release: testing/unstable
  APT prefers testing
  APT policy: (500, 'testing'), (50, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Shell:  /bin/sh linked to /bin/bash
Kernel: Linux 2.6.15-1-amd64-k8
Locale: LANG=de_DE, LC_CTYPE=de_DE (charmap=ISO-8859-1)

Versions of packages bsdmainutils depends on:
ii  bsdutils                      1:2.12r-10 Basic utilities from 4.4BSD-Lite
ii  debianutils                   2.17       Miscellaneous utilities specific t
ii  libc6                         2.3.6-15   GNU C Library: Shared libraries
ii  libncurses5                   5.5-2      Shared libraries for terminal hand

bsdmainutils recommends no packages.

-- no debconf information

Ciao

        Roland

--- column.c.org        2006-01-02 22:43:26.000000000 +0100
+++ column.c    2006-08-12 14:38:48.000000000 +0200
@@ -249,7 +249,8 @@
                for (coloff = 0; coloff < t->cols  - 1; ++coloff)
                        (void)printf("%s%*s", t->list[coloff],
                            lens[coloff] - t->len[coloff] + 2, " ");
-               (void)printf("%s\n", t->list[coloff]);
+               if (t->list[coloff])
+                       (void)printf("%s\n", t->list[coloff]);
        }
 }