gcc/testsuite/g++.dg/compat/struct-layout-1.exp

   1 # Copyright (C) 2002-2023 Free Software Foundation, Inc.
   2
   3 # This program is free software; you can redistribute it and/or modify
   4 # it under the terms of the GNU General Public License as published by
   5 # the Free Software Foundation; either version 3 of the License, or
   6 # (at your option) any later version.
   7 #
   8 # This program is distributed in the hope that it will be useful,
   9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 # GNU General Public License for more details.
  12 #
  13 # You should have received a copy of the GNU General Public License
  14 # along with GCC; see the file COPYING3.  If not see
  15 # <http://www.gnu.org/licenses/>.
  16 #
  17 # This file was written by Jakub Jelinek, <jakub@redhat.com>
  18 # Based on compat.exp writte by Janis Johnson, <janis187@us.ibm.com>
  19
  20
  21 # Test interoperability of two compilers that follow the same ABI.
  22 #
  23 # Break simple tests into two pieces and see that they work when linked
  24 # together.  If an alternate compiler is specified then the two main
  25 # pieces of each test are compiled with different compilers.  The
  26 # alternate compiler must be installed, and is specified by defining
  27 # ALT_CXX_UNDER_TEST in the environment.
  28 #
  29 # struct-layout-1 are generated structure layout interoperability tests,
  30 # so a generator first needs to be compiled on host, run there and the
  31 # generated tests then compiled on build and executed on target.
  32
  33 if $tracelevel then {
  34     strace $tracelevel
  35 }
  36
  37 global GXX_UNDER_TEST
  38 global ld_library_path
  39
  40 # Load procedures from common libraries.
  41 load_lib standard.exp
  42 load_lib g++.exp
  43 load_lib target-libpath.exp
  44
  45 #
  46 # compat-use-alt-compiler -- make the alternate compiler the default
  47 #
  48 proc compat-use-alt-compiler { } {
  49     global GXX_UNDER_TEST ALT_CXX_UNDER_TEST
  50     global CXXFLAGS
  51     global ALWAYS_CXXFLAGS
  52     global ld_library_path alt_ld_library_path
  53     global same_alt
  54
  55     # We don't need to do this if the alternate compiler is actually
  56     # the same as the compiler under test.
  57     if { $same_alt == 0 } then {
  58         set GXX_UNDER_TEST $ALT_CXX_UNDER_TEST
  59         set CXXFLAGS ""
  60         set ALWAYS_CXXFLAGS ""
  61         set ld_library_path $alt_ld_library_path
  62         set_ld_library_path_env_vars
  63         restore_gcc_exec_prefix_env_var
  64         clear_effective_target_cache
  65     }
  66 }
  67
  68 #
  69 # compat-use-tst-compiler -- make compiler under test the default
  70 #
  71 proc compat-use-tst-compiler { } {
  72     global GXX_UNDER_TEST save_gxx_under_test
  73     global CXXFLAGS save_cxxflags
  74     global ALWAYS_CXXFLAGS save_always_cxxflags
  75     global ld_library_path save_ld_library_path
  76     global same_alt
  77
  78     # We don't need to do this if the alternate compiler is actually
  79     # the same as the compiler under test.
  80
  81     if { $same_alt == 0 } then {
  82         set GXX_UNDER_TEST $save_gxx_under_test
  83         set CXXFLAGS $save_cxxflags
  84         set ALWAYS_CXXFLAGS $save_always_cxxflags
  85         set ld_library_path $save_ld_library_path
  86         set_ld_library_path_env_vars
  87     }
  88 }
  89
  90 # Load the language-independent compabibility support procedures.
  91 # This must be done after the compat-use-*-compiler definitions.
  92 load_lib compat.exp
  93
  94 # Provide the g++-dg-prune routine (gcc-dp.exp is loaded by compat.exp)
  95 load_lib g++-dg.exp
  96
  97 g++_init
  98
  99 # Save variables for the C++ compiler under test, which each test will
 100 # change a couple of times.  This must be done after calling g++-init.
 101 set save_gxx_under_test $GXX_UNDER_TEST
 102 set save_cxxflags $CXXFLAGS
 103 set save_always_cxxflags $ALWAYS_CXXFLAGS
 104 set save_ld_library_path $ld_library_path
 105
 106 # Define an identifier for use with this suite to avoid name conflicts
 107 # with other compat tests running at the same time.
 108 set sid "cp_compat"
 109
 110 # Find out whether there is an alternate compiler to test.  If the
 111 # variable is defined but is set to "same", that means we use the same
 112 # compiler twice, which is meaningful if the two parts of COMPAT_OPTIONS
 113 # are different.
 114 set use_alt 0
 115 set same_alt 0
 116 set alt_ld_library_path "."
 117 if [info exists ALT_CXX_UNDER_TEST] then {
 118     set use_alt 1
 119     if [string match "same" $ALT_CXX_UNDER_TEST] then {
 120         set same_alt 1
 121     } else {
 122         if [info exists ALT_LD_LIBRARY_PATH] then {
 123             append alt_ld_library_path ":${ALT_LD_LIBRARY_PATH}"
 124         }
 125     }
 126 }
 127
 128 set tstobjdir "$tmpdir/g++.dg-struct-layout-1"
 129 set generator "$tmpdir/g++.dg-struct-layout-1_generate.exe"
 130
 131 set generator_src "$srcdir/$subdir/struct-layout-1_generate.c"
 132 set generator_src "$generator_src $srcdir/$subdir/../../gcc.dg/compat/generate-random.c"
 133 set generator_src "$generator_src $srcdir/$subdir/../../gcc.dg/compat/generate-random_r.c"
 134 set generator_cmd "-o $generator $generator_src"
 135
 136 # Temporarily switch to the environment of the host compiler.
 137 restore_ld_library_path_env_vars
 138 set status [remote_exec build "$HOSTCC $HOSTCFLAGS $generator_cmd"]
 139 set status [lindex $status 0]
 140 set_ld_library_path_env_vars
 141 if { $status == 0 } then {
 142     file delete -force $tstobjdir
 143     file mkdir $tstobjdir
 144     set generator_args "-s $srcdir/$subdir -d $tstobjdir"
 145     set test_cxx14_vs_cxx17 1
 146     if { $use_alt != 0 } then {
 147         compat-use-alt-compiler
 148         if { [check_no_compiler_messages_nocache compat_alt_has_cxx14 object {
 149                 int dummy; } "-std=c++14"] == 0 } {
 150             set test_cxx14_vs_cxx17 0
 151         } elseif { [check_no_compiler_messages_nocache compat_alt_has_cxx17 object {
 152                 int dummy; } "-std=c++17"] == 0 } {
 153             set test_cxx14_vs_cxx17 0
 154         }
 155         compat-use-tst-compiler
 156     }
 157     if { $test_cxx14_vs_cxx17 != 0 } then {
 158         set generator_args "$generator_args -c"
 159     }
 160     if [info exists env(RUN_ALL_COMPAT_TESTS) ] then {
 161         set generator_args "$generator_args -n 15000"
 162     }
 163     if [check_effective_target_short_enums] then {
 164         set generator_args "-e $generator_args"
 165     }
 166     set status [remote_exec host "$generator $generator_args"]
 167     set status [lindex $status 0]
 168     if { $status == 0 } then {
 169         foreach src [lsort [find $tstobjdir *_main.C]] {
 170             # If we're only testing specific files and this isn't one
 171             # of them, skip it.
 172             if ![runtest_file_p $runtests $src] then {
 173                 continue
 174             }
 175
 176             compat-execute $src $sid $use_alt
 177         }
 178     } else {
 179         warning "Could not execute g++.dg/compat/struct-layout-1 generator"
 180     }
 181 } else {
 182     warning "Could not compile g++.dg/compat/struct-layout-1 generator"
 183 }
 184
 185 # Restore the original compiler under test.
 186 compat-use-tst-compiler