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

   1 # Test handling of weak undefined symbols
   2 #   Copyright 2001
   3 #   Free Software Foundation, Inc.
   4 #
   5 # This file is free software; you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation; either version 2 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 # GNU General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program; if not, write to the Free Software
  17 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18
  19 set testname "weak undefined symbols"
  20
  21 # This test only works for ELF targets.  It ought to work for some
  22 # a.out targets, but it doesn't.
  23
  24 if { ![istarget *-*-sysv4*] \
  25      && ![istarget *-*-unixware*] \
  26      && ![istarget *-*-elf*] \
  27      && ![istarget *-*-eabi*] \
  28      && ![istarget hppa*64*-*-hpux*] \
  29      && ![istarget *-*-linux*] \
  30      && ![istarget *-*-irix5*] \
  31      && ![istarget *-*-irix6*] \
  32      && ![istarget *-*-solaris2*] } then {
  33     return
  34 }
  35
  36 if { [istarget *-*-linux*aout*] \
  37      || [istarget *-*-linux*oldld*] } {
  38     return
  39 }
  40
  41 if {! [ld_assemble $as $srcdir/$subdir/weak-undef.s tmpdir/weak-undef.o]} then {
  42     # It's OK if .weak doesn't work on this target.
  43     unresolved $testname
  44     return
  45 }
  46
  47 # The linker should accept references to undefined weaks without error,
  48 # and resolve them to zero.
  49
  50 set output_regexp \
  51 ".*Contents of section .data:.*0000 00000000 11111111.*"
  52
  53 if {! [ld_simple_link $ld tmpdir/weak-undef "$flags tmpdir/weak-undef.o -T $srcdir/$subdir/weak-undef.t"] } then {
  54     fail $testname
  55 } else {
  56     if {[which $objdump] == 0} then {
  57         unresolved $testname
  58         return
  59     }
  60
  61     verbose -log "$objdump -s tmpdir/weak-undef"
  62     catch "exec $objdump -s tmpdir/weak-undef" exec_output
  63     set exec_output [prune_warnings $exec_output]
  64     verbose -log $exec_output
  65
  66     if {[regexp $output_regexp $exec_output]} then {
  67         pass $testname
  68     } else {
  69         fail $testname
  70     }
  71 }