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