t/test-extensions-empty.sh

   1 #! /bin/sh
   2 # Copyright (C) 2020-2024 Free Software Foundation, Inc.
   3 #
   4 # This program is free software; you can redistribute it and/or modify
   5 # it under the terms of the GNU General Public License as published by
   6 # the Free Software Foundation; either version 2, or (at your option)
   7 # any later version.
   8 #
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU General Public License
  15 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
  16
  17 # Empty assignment to TEST_EXTENSIONS should not provoke Perl warning.
  18 # https://bugs.gnu.org/42635
  19
  20 . test-init.sh
  21
  22 cat > configure.ac << 'END'
  23 AC_INIT([foo],[1.0])
  24 AM_INIT_AUTOMAKE([foreign])
  25 AC_PROG_CC  dnl comment this line to make the warning disappear
  26 AC_CONFIG_FILES([Makefile])
  27 AC_OUTPUT
  28 END
  29
  30 cat > Makefile.am << 'END'
  31 TEST_EXTENSIONS =
  32 LOG_COMPILER = echo
  33 TESTS = foo.test
  34 END
  35
  36 touch foo.test
  37
  38 autoreconf -fi >reconf.out 2>&1
  39 grep 'uninitialized value' reconf.out && exit 1
  40
  41 # What we're trying to avoid:
  42 # ...
  43 # Use of uninitialized value in string eq at /usr/bin/automake line 4953.
  44 # ...
  45 # nl -ba `command -v automake` | sed -n '4951,4955p'
  46 #  4951            if ($handle_exeext)
  47 #  4952              {
  48 #  4953                unshift (@test_suffixes, $at_exeext)
  49 #  4954                  unless $test_suffixes[0] eq $at_exeext;
  50 #  4955              }
  51
  52 :