#! /bin/sh -e
# tup - A file-based build system
#
# Copyright (C) 2010-2024  Mike Shal <marfey@gmail.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# This program 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, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

# Ran into a rather annoying problem when changing tup.config and also
# removing something that linked to a variable. The problem is in the first
# phase, the scan finds the missing file and removes it and all its links
# from the database. The other end of the removed links are checked for
# possible ghosts, which adds their tup_entrys to the entry tree. If an
# entry is a variable, that variable will fail to get added properly if
# tup.config was also changed, resulting in a database error. Also due to
# my poor error handling logic, the error was partially committed (I think),
# making it difficult to reproduce.
#
# This test reproduces the issue by making a directory dependent on @(ARCH),
# and then removing the dir and modifying tup.config in the same step.

. ./tup.sh

mkdir foo
cat > foo/Tupfile <<HERE
files-@(ARCH) = foo.c
HERE
varsetall ARCH=y
update

rm -rf foo
touch tup.config
update

eotup
