gold/testsuite/weak_as_needed.sh

   1 #!/bin/sh
   2
   3 # weak_as_needed.sh -- a test case for version handling with weak symbols
   4 # and --as-needed libraries.
   5
   6 # Copyright (C) 2018-2022 Free Software Foundation, Inc.
   7 # Written by Cary Coutant <ccoutant@gmail.com>.
   8
   9 # This file is part of gold.
  10
  11 # This program is free software; you can redistribute it and/or modify
  12 # it under the terms of the GNU General Public License as published by
  13 # the Free Software Foundation; either version 3 of the License, or
  14 # (at your option) any later version.
  15
  16 # This program is distributed in the hope that it will be useful,
  17 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 # GNU General Public License for more details.
  20
  21 # You should have received a copy of the GNU General Public License
  22 # along with this program; if not, write to the Free Software
  23 # Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  24 # MA 02110-1301, USA.
  25
  26 # This test verifies that a weak reference is properly bound to
  27 # an as-needed library, when it is first resolved to a symbol in
  28 # a library that ends up being not needed.
  29
  30 # Ref: https://stackoverflow.com/questions/50751421/undefined-behavior-in-shared-lib-using-libpthread-but-not-having-it-in-elf-as-d
  31
  32 check()
  33 {
  34     if ! grep -q "$2" "$1"
  35     then
  36         echo "Did not find expected output in $1:"
  37         echo "   $2"
  38         echo ""
  39         echo "Actual output below:"
  40         cat "$1"
  41         exit 1
  42     fi
  43 }
  44
  45 check_missing()
  46 {
  47     if grep -q "$2" "$1"
  48     then
  49         echo "Found unexpected output in $1:"
  50         echo "   $2"
  51         echo ""
  52         echo "Actual output below:"
  53         cat "$1"
  54         exit 1
  55     fi
  56 }
  57
  58 check weak_as_needed.stdout "WEAK .* UND  *bar@v2"
  59 check weak_as_needed.stdout "NEEDED.*weak_as_needed_c\.so"
  60 check_missing weak_as_needed.stdout "NEEDED.*weak_as_needed_b\.so"
  61
  62 exit 0