binutils-gdb/gold/testsuite/gc_dynamic_list_test.sh

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Fix problems with the --dynamic-list option. PR gold/13577 complains that even though symbols listed in the --dynamic-list script are exported, they are still bound symbolically if -Bsymbolic is also used. There are two underlying problems here. First, -Bsymbolic should be overridden by --dynamic-list, since the dynamic list provides an explicit list of symbols that are not bound within the library, and if we go ahead and set DT_SYMBOLIC, then the dynamic loader will bind it within the library anyway. Second, gold did not properly identify the symbols listed in the file as preemptible. PR gold/16530 complains that symbols listed in the --dynamic-list script can still be garbage collected. I've fixed this by checking the symbols as they're added to the symbol table. (Unlike the --export-dynamic-symbol option, we can't iterate over the list, because the --dynamic-list script can have wildcards in it.) gold/ 2014-02-05 Cary Coutant <ccoutant@google.com> PR gold/13577 * options.cc (General_options::parse_dynamic_list): Set have_dynamic_list_. (General_options::General_options): Initialize have_dynamic_list_. (General_options::finalize): Turn off -Bsymbolic and -Bsymbolic-functions if --dynamic-list provided. * options.h (General_options::have_dynamic_list): New function. (General_options::have_dynamic_list_): New data member. * symtab.h (Symbol::is_preemptible): Handle --dynamic-list correctly. PR gold/16530 * symtab.cc (Symbol_table::add_from_relobj): If symbol is named in --dynamic-list, mark it. * testsuite/Makefile.am (gc_dynamic_list_test.sh): New test case. (dynamic_list_2): New test case. * testsuite/Makefile.in: Regenerate. * testsuite/dynamic_list_2.cc: New file. * testsuite/dynamic_list_2.t: New file. * testsuite/dynamic_list_lib1.cc: New file. * testsuite/dynamic_list_lib2.cc: New file. * testsuite/gc_dynamic_list_test.c: New file. * testsuite/gc_dynamic_list_test.sh: New file. * testsuite/gc_dynamic_list_test.t: New file.
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#!/bin/sh
# gc_comdat_test.sh -- test --gc-sections
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# Copyright (C) 2014-2016 Free Software Foundation, Inc.
Fix problems with the --dynamic-list option. PR gold/13577 complains that even though symbols listed in the --dynamic-list script are exported, they are still bound symbolically if -Bsymbolic is also used. There are two underlying problems here. First, -Bsymbolic should be overridden by --dynamic-list, since the dynamic list provides an explicit list of symbols that are not bound within the library, and if we go ahead and set DT_SYMBOLIC, then the dynamic loader will bind it within the library anyway. Second, gold did not properly identify the symbols listed in the file as preemptible. PR gold/16530 complains that symbols listed in the --dynamic-list script can still be garbage collected. I've fixed this by checking the symbols as they're added to the symbol table. (Unlike the --export-dynamic-symbol option, we can't iterate over the list, because the --dynamic-list script can have wildcards in it.) gold/ 2014-02-05 Cary Coutant <ccoutant@google.com> PR gold/13577 * options.cc (General_options::parse_dynamic_list): Set have_dynamic_list_. (General_options::General_options): Initialize have_dynamic_list_. (General_options::finalize): Turn off -Bsymbolic and -Bsymbolic-functions if --dynamic-list provided. * options.h (General_options::have_dynamic_list): New function. (General_options::have_dynamic_list_): New data member. * symtab.h (Symbol::is_preemptible): Handle --dynamic-list correctly. PR gold/16530 * symtab.cc (Symbol_table::add_from_relobj): If symbol is named in --dynamic-list, mark it. * testsuite/Makefile.am (gc_dynamic_list_test.sh): New test case. (dynamic_list_2): New test case. * testsuite/Makefile.in: Regenerate. * testsuite/dynamic_list_2.cc: New file. * testsuite/dynamic_list_2.t: New file. * testsuite/dynamic_list_lib1.cc: New file. * testsuite/dynamic_list_lib2.cc: New file. * testsuite/gc_dynamic_list_test.c: New file. * testsuite/gc_dynamic_list_test.sh: New file. * testsuite/gc_dynamic_list_test.t: New file.
2014-02-05 23:01:52 +01:00
# Written by Cary Coutant <ccoutant@google.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.
# The goal of this program is to verify if comdat's and garbage
# collection work together. Files gc_comdat_test_1.cc and
# gc_comdat_test_2.cc are used in this test. This program checks
# if the kept comdat section is garbage collected.
check()
{
if ! grep -q "$2" "$1"
then
echo "Garbage collection should not have collected '$2'"
exit 1
fi
}
check gc_dynamic_list_test.stdout "keep"