mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-11-21 01:12:32 +08:00
80 lines
2.3 KiB
C++
80 lines
2.3 KiB
C++
// weak_undef_test_2.cc -- test handling of weak undefined symbols for gold
|
|
|
|
// Copyright (C) 2014-2017 Free Software Foundation, Inc.
|
|
// 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.
|
|
|
|
// This file tests that we correctly deal with weak undefined symbols
|
|
// when searching archive libraries. If we have a weak undefined symbol,
|
|
// it should not cause us to link an archive library member that defines
|
|
// that symbol. However, if the symbol is also listed in a -u option on
|
|
// the command line, it should cause the archive member to be linked.
|
|
|
|
|
|
#include <cstdio>
|
|
|
|
// This symbol is defined in weak_undef_file3.cc, but we should
|
|
// not load it from the library.
|
|
extern int weak_undef_1 __attribute__ ((weak));
|
|
|
|
// This symbol is defined in weak_undef_file4.cc, but is also
|
|
// listed in a -u option on the link command, so we should
|
|
// load it from the library.
|
|
extern int weak_undef_2 __attribute__ ((weak));
|
|
|
|
int *p1 = &weak_undef_1;
|
|
|
|
int *p2 = &weak_undef_2;
|
|
|
|
int
|
|
main()
|
|
{
|
|
int status = 0;
|
|
|
|
if (&weak_undef_1 != NULL)
|
|
{
|
|
fprintf(stderr, "FAILED weak undef test 1: %s\n",
|
|
"&weak_undef_1 is not NULL");
|
|
status = 1;
|
|
}
|
|
|
|
if (&weak_undef_2 == NULL)
|
|
{
|
|
fprintf(stderr, "FAILED weak undef test 2: %s\n",
|
|
"&weak_undef_2 is NULL");
|
|
status = 1;
|
|
}
|
|
|
|
if (p1 != NULL)
|
|
{
|
|
fprintf(stderr, "FAILED weak undef test 3: %s\n",
|
|
"p1 is not NULL");
|
|
status = 1;
|
|
}
|
|
|
|
if (p2 == NULL)
|
|
{
|
|
fprintf(stderr, "FAILED weak undef test 4: %s\n",
|
|
"p2 is NULL");
|
|
status = 1;
|
|
}
|
|
|
|
return status;
|
|
}
|