1# Copyright 2019-2024 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 28require allow_cplus_tests 29 30standard_testfile .cc 31 32set options {debug c++ additional_flags=-std=c++11} 33if {[prepare_for_testing "failed to prepare" $testfile $srcfile $options]} { 34 return -1 35} 36 37if {![runto_main]} { 38 return -1 39} 40 41# GCC version <= 6 and Clang do not emit DW_AT_defaulted and DW_AT_deleted. 42set is_gcc_6_or_older [test_compiler_info {gcc-[0-6]-*}] 43set is_clang [test_compiler_info {clang-*}] 44 45set bp_location [gdb_get_line_number "stop here"] 46gdb_breakpoint $bp_location 47gdb_continue_to_breakpoint "end of main" ".*return .*;" 48 49gdb_test "print cbvArrayContainerByVal (arrayContainerByVal)" "6" \ 50 "call cbvArrayContainerByVal" 51gdb_test "print arrayContainerByVal.items\[0\].x" "2" \ 52 "cbv argument 'arrayContainerByVal' should not change" 53 54gdb_test "print cbvArrayContainerByRef (arrayContainerByRef)" "7" \ 55 "call cbvArrayContainerByRef" 56gdb_test "print arrayContainerByRef.items\[0\].x" "2" \ 57 "cbv argument 'arrayContainerByRef' should not change" 58 59gdb_test "print cbvDynamic (dynamic)" "48" \ 60 "call cbvDynamic" 61gdb_test "print dynamic.x" "2" \ 62 "cbv argument 'dynamic' should not change" 63 64set sig "\"Inlined\:\:Inlined\\(.*Inlined const\&\\)\"" 65gdb_test "print cbvInlined (inlined)" \ 66 "expression cannot be evaluated .* \\(maybe inlined\\?\\)" 67 68if {$is_gcc_6_or_older || $is_clang} {setup_xfail "*-*-*"} 69gdb_test "print cbvDtorDel (*dtorDel)" \ 70 ".* cannot be evaluated .* 'DtorDel' is not destructible" \ 71 "type not destructible" 72 73# Test that GDB calls the correct copy ctor 74gdb_test "print cbvFourCCtor (fourCctor_c0v0)" "13" \ 75 "call cbvFourCCtor (c0v0)" 76gdb_test "print fourCctor_c0v0.x" "2" \ 77 "cbv argument 'twoCctor_c0v0' should not change" 78 79gdb_test "print cbvFourCCtor (fourCctor_c1v0)" "14" \ 80 "call cbvFourCCtor (c1v0)" 81gdb_test "print fourCctor_c1v0.x" "2" \ 82 "cbv argument 'twoCctor_c1v0' should not change" 83 84gdb_test "print cbvFourCCtor (fourCctor_c0v1)" "15" \ 85 "call cbvFourCCtor (c0v1)" 86gdb_test "print fourCctor_c0v1.x" "2" \ 87 "cbv argument 'twoCctor_c0v1' should not change" 88 89gdb_test "print cbvFourCCtor (fourCctor_c1v1)" "16" \ 90 "call cbvFourCCtor (c1v1)" 91gdb_test "print fourCctor_c1v1.x" "2" \ 92 "cbv argument 'twoCctor_c1v1' should not change" 93 94gdb_test "print cbvTwoMCtor (twoMctor)" \ 95 ".* cannot be evaluated .* 'TwoMCtor' is not copy constructible" \ 96 "copy ctor is implicitly deleted" 97 98if {$is_gcc_6_or_older || $is_clang} {setup_xfail "*-*-*"} 99gdb_test "print cbvTwoMCtorAndCCtor (twoMctorAndCctor)" "12" \ 100 "call cbvTwoMCtorAndCCtor" 101gdb_test "print twoMctorAndCctor.x" "2" \ 102 "cbv argument 'twoMctorAndCtor' should not change" 103 104# Test that we get a breakpoint from the cctor during infcall and 105# we can examine arguments. This is a test that the dummy frame 106# of the copy constructor is set up correctly by the infcall mechanism. 107set bp_location [gdb_get_line_number "ByRef-cctor"] 108gdb_breakpoint $bp_location 109gdb_test "print cbvArrayContainerByRef (arrayContainerByRef)" \ 110 ".*The program being debugged stopped.*" \ 111 "call cbvArrayContainerByRef with BP" 112gdb_test "backtrace" [multi_line \ 113 "#0 ByRef\:\:ByRef .* at .*$srcfile:$bp_location" \ 114 "#1 .* ArrayContainerByRef::ArrayContainerByRef .*" \ 115 "#2 <function called from gdb>" \ 116 "#3 main.*"] 117