[groff] 02/05: Add regression test for Savannah #60189.

[G. Branden Robinson]

gbranden pushed a commit to branch master
in repository groff.

commit f2d7e3ee22ed281beb0d096a773f995b25269a48
Author: G. Branden Robinson <g.branden.robinson@gmail.com>
AuthorDate: Sat Sep 4 22:58:07 2021 +1000

    Add regression test for Savannah #60189.
    
    * src/roff/groff/tests/break_zero-length_output_line_sanely.sh: Do it.
    * src/roff/groff/groff.am (groff_TESTS): Run test.
    
    Test fails at this commit.
---
 ChangeLog                                          |  8 +++++
 src/roff/groff/groff.am                            |  1 +
 .../tests/break_zero-length_output_line_sanely.sh  | 42 ++++++++++++++++++++++
 3 files changed, 51 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index 78c3e39..c57e6e7 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2021-09-04  G. Branden Robinson <g.branden.robinson@gmail.com>
+
+       Add regression test for Savannah #60189.
+
+       * src/roff/groff/tests/break_zero-length_output_line_sanely.sh:
+       Do it.
+       * src/roff/groff/groff.am (groff_TESTS): Run test.
+
 2021-08-29  G. Branden Robinson <g.branden.robinson@gmail.com>
 
        [troff]: Tweak diagnostic message.
diff --git a/src/roff/groff/groff.am b/src/roff/groff/groff.am
index d39796a..3b99c20 100644
--- a/src/roff/groff/groff.am
+++ b/src/roff/groff/groff.am
@@ -37,6 +37,7 @@ EXTRA_DIST += src/roff/groff/groff.1.man
 
 groff_TESTS = \
   src/roff/groff/tests/adjustment_works.sh \
+  src/roff/groff/tests/break_zero-length_output_line_sanely.sh \
   src/roff/groff/tests/do_not_loop_infinitely_when_breaking_cjk.sh \
   src/roff/groff/tests/dot-cp_register_works.sh \
   src/roff/groff/tests/dot-nm_register_works.sh \
diff --git a/src/roff/groff/tests/break_zero-length_output_line_sanely.sh 
b/src/roff/groff/tests/break_zero-length_output_line_sanely.sh
new file mode 100755
index 0000000..5266362
--- /dev/null
+++ b/src/roff/groff/tests/break_zero-length_output_line_sanely.sh
@@ -0,0 +1,42 @@
+#!/bin/sh
+#
+# Copyright (C) 2021 Free Software Foundation, Inc.
+#
+# This file is part of groff.
+#
+# groff is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free
+# Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# groff is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+# for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+
+groff="${abs_top_builddir:-.}/test-groff"
+
+set -e
+
+# Do not core dump when attempting to distribute a space amount of zero
+# if someone sets the line length to zero.  See Savannah #61089.
+# Reproducer courtesy of John Gardner.
+
+INPUT='.de _
+.      na
+.      nh
+.      ll 0
+.      di A
+\\&\\\\$1
+.      di
+.      br
+..
+._ " XYZ"
+.A'
+
+OUTPUT=$(echo "$INPUT" | "$groff" -Tascii)
+echo "$OUTPUT" | grep -qx XYZ