ld/testsuite/ld-undefined/weak-undef.exp

   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
  21 set 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
  26 if { ![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
  42 if { [istarget *-*-linux*aout*] \
  43      || [istarget *-*-linux*oldld*] } {
  44     unsupported $testname
  45     return
  46 }
  47
  48 # Weak symbols are broken for non-i386 PE targets.
  49 if {! [istarget i?86-*-*]} {
  50     setup_xfail *-*-pe*
  51 }
  52
  53 setup_xfail pj-*-*
  54
  55 if {! [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
  64 set output_regexp \
  65 ".*Contents of section .data:.*0000 00000000 11111111.*"
  66
  67 if {! [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 }