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# Copyright 2022-2023 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/>.
# This file is part of GDB's testsuite.
# This test intends to check the error message that GDB emits when unable
# to determine the correct overloaded function due to incomplete types.
load_lib dwarf.exp
if { [skip_cplus_tests] } { return }
if { ![dwarf2_support] } { return }
standard_testfile .cc .S
set asm_file [standard_output_file ${srcfile2}]
if [prepare_for_testing "failed to prepare" $testfile $srcfile {debug c++}] {
return
}
if ![runto_main] {
return
}
# Get important sizes to create fake dwarf for the test
set int_size [get_sizeof "int" -1]
set addr_size [get_sizeof "void *" -1]
set struct_base_size [get_sizeof "base" 4]
set struct_complete_size [get_sizeof "complete" 4]
get_func_info foo
# Create fake DWARF for the .cc file.
# This is the best way to ensure we have an incomplete type.
Dwarf::assemble ${asm_file} {
global srcdir subdir srcfile srcfile2 foo_start foo_end
global int_size addr_size struct_base_size struct_complete_size
declare_labels L
cu {} {
DW_TAG_compile_unit {
{DW_AT_language @DW_LANG_C_plus_plus}
{name $srcfile}
{stmt_list $L DW_FORM_sec_offset}
} {
declare_labels int_label base_label complete_label incomplete_label
declare_labels ptr_base_label ptr_inc_label ptr_comp_label ptr_int_label
int_label: DW_TAG_base_type {
{DW_AT_byte_size $int_size DW_FORM_sdata}
{DW_AT_encoding @DW_ATE_signed}
{DW_AT_name "int"}
}
base_label: DW_TAG_class_type {
{DW_AT_byte_size $struct_base_size DW_FORM_sdata}
{DW_AT_name "base"}
} {
DW_TAG_member {
{DW_AT_name "member"}
{DW_AT_type :$int_label}
{DW_AT_data_member_location 0 DW_FORM_sdata}
}
}
complete_label: DW_TAG_class_type {
{DW_AT_byte_size $struct_complete_size DW_FORM_sdata}
{DW_AT_name "complete"}
} {
DW_TAG_inheritance {
{DW_AT_type :$base_label}
{DW_AT_data_member_location 0 DW_FORM_sdata}
{DW_AT_accessibility 1 DW_FORM_data1}
}
}
incomplete_label: DW_TAG_class_type {
{DW_AT_name "incomplete"}
{DW_AT_declaration 1 DW_FORM_flag_present}
}
ptr_base_label: DW_TAG_pointer_type {
{DW_AT_byte_size $addr_size DW_FORM_udata}
{DW_AT_type :$base_label}
}
ptr_inc_label: DW_TAG_pointer_type {
{DW_AT_byte_size $addr_size DW_FORM_udata}
{DW_AT_type :$incomplete_label}
}
ptr_comp_label: DW_TAG_pointer_type {
{DW_AT_byte_size $addr_size DW_FORM_udata}
{DW_AT_type :$complete_label}
}
ptr_int_label: DW_TAG_pointer_type {
{DW_AT_byte_size $addr_size DW_FORM_udata}
{DW_AT_type :$int_label}
}
DW_TAG_variable {
{DW_AT_name "comp"}
{DW_AT_type :$complete_label}
{DW_AT_location {DW_OP_addr [gdb_target_symbol "comp"]} SPECIAL_expr}
{DW_AT_external 1 DW_FORM_flag}
}
DW_TAG_variable {
{DW_AT_name "cp"}
{DW_AT_type :$ptr_comp_label}
{DW_AT_location {DW_OP_addr [gdb_target_symbol "cp"]} SPECIAL_expr}
{DW_AT_external 1 DW_FORM_flag}
}
DW_TAG_variable {
{DW_AT_name "inc"}
{DW_AT_type :$ptr_inc_label}
{DW_AT_location {DW_OP_addr [gdb_target_symbol "inc"]} SPECIAL_expr}
{DW_AT_external 1 DW_FORM_flag}
}
DW_TAG_variable {
{DW_AT_name "ip"}
{DW_AT_type :$ptr_int_label}
{DW_AT_location {DW_OP_addr [gdb_target_symbol "ip"]} SPECIAL_expr}
{DW_AT_external 1 DW_FORM_flag}
}
DW_TAG_subprogram {
{MACRO_AT_func {"main"}}
{DW_AT_external 1 flag}
}
DW_TAG_subprogram {
{MACRO_AT_func {"foo"}}
{DW_AT_type :$int_label}
{DW_AT_external 1 flag}
} { formal_parameter {
{DW_AT_name "b"}
{DW_AT_type :$ptr_base_label}
}
}
}
}
lines {version 2} L {
include_dir "$srcdir/$subdir"
file_name $srcfile 1
}
}
if [prepare_for_testing "failed to prepare" $testfile [list $asm_file $srcfile] {}] {
return
}
if ![runto_main] {
return
}
gdb_test "print foo(cp)" "= 1" "successful invocation"
gdb_test "print foo(inc)"\
"The type. 'incomplete .' isn't fully known to GDB.*"\
"unsuccessful because declaration"
gdb_test "print foo(ip)"\
"Cannot resolve function foo to any overloaded instance."\
"unsuccessful because incorrect"
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