binutils-gdb/gold/testsuite/weak_unresolved_symbols_test.cc
Alan Modra a2c5833233 Update year range in copyright notice of binutils files
The result of running etc/update-copyright.py --this-year, fixing all
the files whose mode is changed by the script, plus a build with
--enable-maintainer-mode --enable-cgen-maint=yes, then checking
out */po/*.pot which we don't update frequently.

The copy of cgen was with commit d1dd5fcc38ead reverted as that commit
breaks building of bfp opcodes files.
2022-01-02 12:04:28 +10:30

46 lines
1.4 KiB
C++

// weak_unresolved_symbols_test.cc -- a test case for gold
// Copyright (C) 2015-2022 Free Software Foundation, Inc.
// Written by Sriraman Tallam <tmsriram@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.
// Test --weak-unresolved-symbols. Symbol foo remains unresolved but
// with -fPIE, needs a GOT entry and has a dynsym entry and a dynamic
// relocation against it created. This will fail to link and run without
// --weak-unresolved-symbols. With --warn-unresolved-symbols, it will link
// but the dynamic linker will complain that foo(_Z3foov) is unresolved.
extern int foo();
int bar() {
return 0;
}
int (*p)() = &bar;
int main() {
if (p == &foo)
{
foo();
}
else
(*p)();
return 0;
}