gdb/testsuite/gdb.cp/pass-by-ref-2.exp

   1 # Copyright 2019-2021 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 this program.  If not, see <http://www.gnu.org/licenses/>.
  15
  16 # Check that GDB can call C++ functions whose parameters have
  17 # object type, and are either passed by value or implicitly by reference.
  18 #
  19 # This is a companion test to pass-by-ref.exp.  In this test, the input
  20 # is manually-written.  In pass-by-ref.exp, the test input is generated.
  21 #
  22 # We include tests for classes that
  23 # - contain arrays as fields,
  24 # - are dynamic (i.e. have virtual methods)
  25 # - have inlined copy ctor
  26 # - have deleted destructor
  27
  28 if {[skip_cplus_tests]} {
  29     untested "c++ test skipped"
  30     continue
  31 }
  32
  33 standard_testfile .cc
  34
  35 set options {debug c++ additional_flags=-std=c++11}
  36 if {[prepare_for_testing "failed to prepare" $testfile $srcfile $options]} {
  37     return -1
  38 }
  39
  40 if {![runto_main]} {
  41     untested "failed to run to main"
  42     return -1
  43 }
  44
  45 # GCC version <= 6 and Clang do not emit DW_AT_defaulted and DW_AT_deleted.
  46 set is_gcc_6_or_older [test_compiler_info {gcc-[0-6]-*}]
  47 set is_clang [test_compiler_info {clang-*}]
  48
  49 set bp_location [gdb_get_line_number "stop here"]
  50 gdb_breakpoint $bp_location
  51 gdb_continue_to_breakpoint "end of main" ".*return .*;"
  52
  53 gdb_test "print cbvArrayContainerByVal (arrayContainerByVal)" "6" \
  54     "call cbvArrayContainerByVal"
  55 gdb_test "print arrayContainerByVal.items\[0\].x" "2" \
  56     "cbv argument 'arrayContainerByVal' should not change"
  57
  58 gdb_test "print cbvArrayContainerByRef (arrayContainerByRef)" "7" \
  59     "call cbvArrayContainerByRef"
  60 gdb_test "print arrayContainerByRef.items\[0\].x" "2" \
  61     "cbv argument 'arrayContainerByRef' should not change"
  62
  63 gdb_test "print cbvDynamic (dynamic)" "48" \
  64     "call cbvDynamic"
  65 gdb_test "print dynamic.x" "2" \
  66     "cbv argument 'dynamic' should not change"
  67
  68 set sig "\"Inlined\:\:Inlined\\(.*Inlined const\&\\)\""
  69 gdb_test "print cbvInlined (inlined)" \
  70     "expression cannot be evaluated .* \\(maybe inlined\\?\\)"
  71
  72 if {$is_gcc_6_or_older || $is_clang} {setup_xfail "*-*-*"}
  73 gdb_test "print cbvDtorDel (*dtorDel)" \
  74     ".* cannot be evaluated .* 'DtorDel' is not destructible" \
  75     "type not destructible"
  76
  77 # Test that GDB calls the correct copy ctor
  78 gdb_test "print cbvFourCCtor (fourCctor_c0v0)" "13" \
  79     "call cbvFourCCtor (c0v0)"
  80 gdb_test "print fourCctor_c0v0.x" "2" \
  81     "cbv argument 'twoCctor_c0v0' should not change"
  82
  83 gdb_test "print cbvFourCCtor (fourCctor_c1v0)" "14" \
  84     "call cbvFourCCtor (c1v0)"
  85 gdb_test "print fourCctor_c1v0.x" "2" \
  86     "cbv argument 'twoCctor_c1v0' should not change"
  87
  88 gdb_test "print cbvFourCCtor (fourCctor_c0v1)" "15" \
  89     "call cbvFourCCtor (c0v1)"
  90 gdb_test "print fourCctor_c0v1.x" "2" \
  91     "cbv argument 'twoCctor_c0v1' should not change"
  92
  93 gdb_test "print cbvFourCCtor (fourCctor_c1v1)" "16" \
  94     "call cbvFourCCtor (c1v1)"
  95 gdb_test "print fourCctor_c1v1.x" "2" \
  96     "cbv argument 'twoCctor_c1v1' should not change"
  97
  98 gdb_test "print cbvTwoMCtor (twoMctor)" \
  99     ".* cannot be evaluated .* 'TwoMCtor' is not copy constructible" \
 100     "copy ctor is implicitly deleted"
 101
 102 if {$is_gcc_6_or_older || $is_clang} {setup_xfail "*-*-*"}
 103 gdb_test "print cbvTwoMCtorAndCCtor (twoMctorAndCctor)" "12" \
 104     "call cbvTwoMCtorAndCCtor"
 105 gdb_test "print twoMctorAndCctor.x" "2" \
 106     "cbv argument 'twoMctorAndCtor' should not change"
 107
 108 # Test that we get a breakpoint from the cctor during infcall and
 109 # we can examine arguments.  This is a test that the dummy frame
 110 # of the copy constructor is set up correctly by the infcall mechanism.
 111 set bp_location [gdb_get_line_number "ByRef-cctor"]
 112 gdb_breakpoint $bp_location
 113 gdb_test "print cbvArrayContainerByRef (arrayContainerByRef)" \
 114     ".*The program being debugged stopped.*" \
 115     "call cbvArrayContainerByRef with BP"
 116 gdb_test "backtrace" [multi_line \
 117     "#0  ByRef\:\:ByRef .* at .*$srcfile:$bp_location" \
 118     "#1  .* ArrayContainerByRef::ArrayContainerByRef .*" \
 119     "#2  <function called from gdb>" \
 120     "#3  main.*"]