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#!/bin/sh
# weak_as_needed.sh -- a test case for version handling with weak symbols
# and --as-needed libraries.
# Copyright (C) 2018-2021 Free Software Foundation, Inc.
# Written by Cary Coutant <ccoutant@gmail.com>.
# This file is part of gold.
# This program 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.
# 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.
# This test verifies that a weak reference is properly bound to
# an as-needed library, when it is first resolved to a symbol in
# a library that ends up being not needed.
# Ref: https://stackoverflow.com/questions/50751421/undefined-behavior-in-shared-lib-using-libpthread-but-not-having-it-in-elf-as-d
check()
{
if ! grep -q "$2" "$1"
then
echo "Did not find expected output in $1:"
echo " $2"
echo ""
echo "Actual output below:"
cat "$1"
exit 1
fi
}
check_missing()
{
if grep -q "$2" "$1"
then
echo "Found unexpected output in $1:"
echo " $2"
echo ""
echo "Actual output below:"
cat "$1"
exit 1
fi
}
check weak_as_needed.stdout "WEAK .* UND *bar@v2"
check weak_as_needed.stdout "NEEDED.*weak_as_needed_c\.so"
check_missing weak_as_needed.stdout "NEEDED.*weak_as_needed_b\.so"
exit 0
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