1# Copyright 2019-2023 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 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 28if {[skip_cplus_tests]} { 29 untested "c++ test skipped" 30 return 31} 32 33standard_testfile .cc 34 35set options {debug c++ additional_flags=-std=c++11} 36if {[prepare_for_testing "failed to prepare" $testfile $srcfile $options]} { 37 return -1 38} 39 40if {![runto_main]} { 41 return -1 42} 43 44# GCC version <= 6 and Clang do not emit DW_AT_defaulted and DW_AT_deleted. 45set is_gcc_6_or_older [test_compiler_info {gcc-[0-6]-*}] 46set is_clang [test_compiler_info {clang-*}] 47 48set bp_location [gdb_get_line_number "stop here"] 49gdb_breakpoint $bp_location 50gdb_continue_to_breakpoint "end of main" ".*return .*;" 51 52gdb_test "print cbvArrayContainerByVal (arrayContainerByVal)" "6" \ 53 "call cbvArrayContainerByVal" 54gdb_test "print arrayContainerByVal.items\[0\].x" "2" \ 55 "cbv argument 'arrayContainerByVal' should not change" 56 57gdb_test "print cbvArrayContainerByRef (arrayContainerByRef)" "7" \ 58 "call cbvArrayContainerByRef" 59gdb_test "print arrayContainerByRef.items\[0\].x" "2" \ 60 "cbv argument 'arrayContainerByRef' should not change" 61 62gdb_test "print cbvDynamic (dynamic)" "48" \ 63 "call cbvDynamic" 64gdb_test "print dynamic.x" "2" \ 65 "cbv argument 'dynamic' should not change" 66 67set sig "\"Inlined\:\:Inlined\\(.*Inlined const\&\\)\"" 68gdb_test "print cbvInlined (inlined)" \ 69 "expression cannot be evaluated .* \\(maybe inlined\\?\\)" 70 71if {$is_gcc_6_or_older || $is_clang} {setup_xfail "*-*-*"} 72gdb_test "print cbvDtorDel (*dtorDel)" \ 73 ".* cannot be evaluated .* 'DtorDel' is not destructible" \ 74 "type not destructible" 75 76# Test that GDB calls the correct copy ctor 77gdb_test "print cbvFourCCtor (fourCctor_c0v0)" "13" \ 78 "call cbvFourCCtor (c0v0)" 79gdb_test "print fourCctor_c0v0.x" "2" \ 80 "cbv argument 'twoCctor_c0v0' should not change" 81 82gdb_test "print cbvFourCCtor (fourCctor_c1v0)" "14" \ 83 "call cbvFourCCtor (c1v0)" 84gdb_test "print fourCctor_c1v0.x" "2" \ 85 "cbv argument 'twoCctor_c1v0' should not change" 86 87gdb_test "print cbvFourCCtor (fourCctor_c0v1)" "15" \ 88 "call cbvFourCCtor (c0v1)" 89gdb_test "print fourCctor_c0v1.x" "2" \ 90 "cbv argument 'twoCctor_c0v1' should not change" 91 92gdb_test "print cbvFourCCtor (fourCctor_c1v1)" "16" \ 93 "call cbvFourCCtor (c1v1)" 94gdb_test "print fourCctor_c1v1.x" "2" \ 95 "cbv argument 'twoCctor_c1v1' should not change" 96 97gdb_test "print cbvTwoMCtor (twoMctor)" \ 98 ".* cannot be evaluated .* 'TwoMCtor' is not copy constructible" \ 99 "copy ctor is implicitly deleted" 100 101if {$is_gcc_6_or_older || $is_clang} {setup_xfail "*-*-*"} 102gdb_test "print cbvTwoMCtorAndCCtor (twoMctorAndCctor)" "12" \ 103 "call cbvTwoMCtorAndCCtor" 104gdb_test "print twoMctorAndCctor.x" "2" \ 105 "cbv argument 'twoMctorAndCtor' should not change" 106 107# Test that we get a breakpoint from the cctor during infcall and 108# we can examine arguments. This is a test that the dummy frame 109# of the copy constructor is set up correctly by the infcall mechanism. 110set bp_location [gdb_get_line_number "ByRef-cctor"] 111gdb_breakpoint $bp_location 112gdb_test "print cbvArrayContainerByRef (arrayContainerByRef)" \ 113 ".*The program being debugged stopped.*" \ 114 "call cbvArrayContainerByRef with BP" 115gdb_test "backtrace" [multi_line \ 116 "#0 ByRef\:\:ByRef .* at .*$srcfile:$bp_location" \ 117 "#1 .* ArrayContainerByRef::ArrayContainerByRef .*" \ 118 "#2 <function called from gdb>" \ 119 "#3 main.*"] 120