1# Test handling of weak undefined symbols 2# Copyright (C) 2001-2016 Free Software Foundation, Inc. 3# 4# This file is part of the GNU Binutils. 5# 6# This program is free software; you can redistribute it and/or modify 7# it under the terms of the GNU General Public License as published by 8# the Free Software Foundation; either version 3 of the License, or 9# (at your option) any later version. 10# 11# This program is distributed in the hope that it will be useful, 12# but WITHOUT ANY WARRANTY; without even the implied warranty of 13# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14# GNU General Public License for more details. 15# 16# You should have received a copy of the GNU General Public License 17# along with this program; if not, write to the Free Software 18# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 19# MA 02110-1301, USA. 20 21set testname "weak undefined symbols" 22 23# This test only works for ELF targets. It ought to work for some 24# a.out targets, but it doesn't. 25 26if { ![istarget *-*-sysv4*] \ 27 && ![istarget *-*-unixware*] \ 28 && ![istarget *-*-elf*] \ 29 && ![istarget *-*-eabi*] \ 30 && ![istarget hppa*64*-*-hpux*] \ 31 && ![istarget *-*-linux*] \ 32 && ![istarget *-*-gnu*] \ 33 && ![istarget *-*-nacl*] \ 34 && ![istarget *-*-irix5*] \ 35 && ![istarget *-*-irix6*] \ 36 && ![is_pecoff_format] \ 37 && ![istarget *-*-solaris2*] } then { 38 unsupported $testname 39 return 40} 41 42if { [istarget *-*-linux*aout*] \ 43 || [istarget *-*-linux*oldld*] } { 44 unsupported $testname 45 return 46} 47 48# Weak symbols are broken for non-i386 PE targets. 49if {! [istarget i?86-*-*]} { 50 setup_xfail *-*-pe* 51} 52 53setup_xfail pj-*-* 54 55if {! [ld_assemble $as $srcdir/$subdir/weak-undef.s tmpdir/weak-undef.o]} then { 56 # It's OK if .weak doesn't work on this target. 57 unresolved $testname 58 return 59} 60 61# The linker should accept references to undefined weaks without error, 62# and resolve them to zero. 63 64set output_regexp \ 65".*Contents of section .data:.*0000 00000000 11111111.*" 66 67if {! [ld_simple_link $ld tmpdir/weak-undef "$flags tmpdir/weak-undef.o -T $srcdir/$subdir/weak-undef.t"] } then { 68 fail $testname 69} else { 70 if {![is_remote host] && [which $objdump] == 0} then { 71 unresolved $testname 72 return 73 } 74 75 set exec_output [run_host_cmd "$objdump" "-s tmpdir/weak-undef"] 76 set exec_output [prune_warnings $exec_output] 77 verbose -log $exec_output 78 79 if {[regexp $output_regexp $exec_output]} then { 80 pass $testname 81 } else { 82 fail $testname 83 } 84} 85