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# Copyright 2019-2020 Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# Check that GDB can call C++ functions whose parameters have
# object type, and are either passed by value or implicitly by reference.
#
# This is a companion test to pass-by-ref.exp. In this test, the input
# is manually-written. In pass-by-ref.exp, the test input is generated.
#
# We include tests for classes that
# - contain arrays as fields,
# - are dynamic (i.e. have virtual methods)
# - have inlined copy ctor
# - have deleted destructor
if {[skip_cplus_tests]} {
untested "c++ test skipped"
continue
}
standard_testfile .cc
set options {debug c++ additional_flags=-std=c++11}
if {[prepare_for_testing "failed to prepare" $testfile $srcfile $options]} {
return -1
}
if {![runto_main]} {
untested "failed to run to main"
return -1
}
# GCC version <= 6 and Clang do not emit DW_AT_defaulted and DW_AT_deleted.
set is_gcc_6_or_older [test_compiler_info {gcc-[0-6]-*}]
set is_clang [test_compiler_info {clang-*}]
set bp_location [gdb_get_line_number "stop here"]
gdb_breakpoint $bp_location
gdb_continue_to_breakpoint "end of main" ".*return .*;"
gdb_test "print cbvArrayContainerByVal (arrayContainerByVal)" "6" \
"call cbvArrayContainerByVal"
gdb_test "print arrayContainerByVal.items\[0\].x" "2" \
"cbv argument 'arrayContainerByVal' should not change"
gdb_test "print cbvArrayContainerByRef (arrayContainerByRef)" "7" \
"call cbvArrayContainerByRef"
gdb_test "print arrayContainerByRef.items\[0\].x" "2" \
"cbv argument 'arrayContainerByRef' should not change"
gdb_test "print cbvDynamic (dynamic)" "48" \
"call cbvDynamic"
gdb_test "print dynamic.x" "2" \
"cbv argument 'dynamic' should not change"
set sig "\"Inlined\:\:Inlined\\(.*Inlined const\&\\)\""
gdb_test "print cbvInlined (inlined)" \
"expression cannot be evaluated .* \\(maybe inlined\\?\\)"
if {$is_gcc_6_or_older || $is_clang} {setup_xfail "*-*-*"}
gdb_test "print cbvDtorDel (*dtorDel)" \
".* cannot be evaluated .* 'DtorDel' is not destructible" \
"type not destructible"
# Test that GDB calls the correct copy ctor
gdb_test "print cbvFourCCtor (fourCctor_c0v0)" "13" \
"call cbvFourCCtor (c0v0)"
gdb_test "print fourCctor_c0v0.x" "2" \
"cbv argument 'twoCctor_c0v0' should not change"
gdb_test "print cbvFourCCtor (fourCctor_c1v0)" "14" \
"call cbvFourCCtor (c1v0)"
gdb_test "print fourCctor_c1v0.x" "2" \
"cbv argument 'twoCctor_c1v0' should not change"
gdb_test "print cbvFourCCtor (fourCctor_c0v1)" "15" \
"call cbvFourCCtor (c0v1)"
gdb_test "print fourCctor_c0v1.x" "2" \
"cbv argument 'twoCctor_c0v1' should not change"
gdb_test "print cbvFourCCtor (fourCctor_c1v1)" "16" \
"call cbvFourCCtor (c1v1)"
gdb_test "print fourCctor_c1v1.x" "2" \
"cbv argument 'twoCctor_c1v1' should not change"
gdb_test "print cbvTwoMCtor (twoMctor)" \
".* cannot be evaluated .* 'TwoMCtor' is not copy constructible" \
"copy ctor is implicitly deleted"
if {$is_gcc_6_or_older || $is_clang} {setup_xfail "*-*-*"}
gdb_test "print cbvTwoMCtorAndCCtor (twoMctorAndCctor)" "12" \
"call cbvTwoMCtorAndCCtor"
gdb_test "print twoMctorAndCctor.x" "2" \
"cbv argument 'twoMctorAndCtor' should not change"
# Test that we get a breakpoint from the cctor during infcall and
# we can examine arguments. This is a test that the dummy frame
# of the copy constructor is set up correctly by the infcall mechanism.
set bp_location [gdb_get_line_number "ByRef-cctor"]
gdb_breakpoint $bp_location
gdb_test "print cbvArrayContainerByRef (arrayContainerByRef)" \
".*The program being debugged stopped.*" \
"call cbvArrayContainerByRef with BP"
gdb_test "backtrace" [multi_line \
"#0 ByRef\:\:ByRef .* at .*$srcfile:$bp_location" \
"#1 .* ArrayContainerByRef::ArrayContainerByRef .*" \
"#2 <function called from gdb>" \
"#3 main.*"]
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