158 lines
4.2 KiB
Plaintext
158 lines
4.2 KiB
Plaintext
# Copyright 2019-2020 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# Import a CU into an "artificial" CU. For each DW_TAG DIE in the
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# artificial CU, use DW_AT_abstract_origin to refer to a DIE in the
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# imported CU. This DWARF file organization is frequently found in
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# programs compiled with -flto (and -g) using GCC.
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#
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# This test reproduces the bug described in BZ 25065 without relying
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# on specific compiler versions or use of optimization switches, in
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# this case -flto.
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if [skip_cplus_tests] {
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continue
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}
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load_lib dwarf.exp
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# This test can only be run on targets which support DWARF-2 and use gas.
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if {![dwarf2_support]} {
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return 0
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};
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standard_testfile .c .S
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# ${testfile} is now "implref-struct". srcfile2 is "implref-struct.S".
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set executable ${testfile}
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set asm_file [standard_output_file ${srcfile2}]
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# We need to know the size of integer and address types in order
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# to write some of the debugging info we'd like to generate.
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if [prepare_for_testing "failed to prepare" ${testfile} ${srcfile} {debug c++}] {
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return -1
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}
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# Create the DWARF.
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Dwarf::assemble $asm_file {
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declare_labels cu_label main_label doit_label int_label
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declare_labels Foo_label Foo_pointer_type doit_self_label
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declare_labels foo_label Foo_destructor_obj_pointer_label
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declare_labels Foo_constructor_obj_pointer_label
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set int_size [get_sizeof "int" 4]
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set addr_size [get_sizeof "void *" 8]
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global srcdir subdir srcfile
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extern main
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extern doit
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set main_range [function_range main ${srcdir}/${subdir}/${srcfile}]
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set main_start [lindex $main_range 0]
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set main_length [lindex $main_range 1]
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set doit_range [function_range doit ${srcdir}/${subdir}/${srcfile}]
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set doit_start [lindex $doit_range 0]
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set doit_length [lindex $doit_range 1]
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cu {} {
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compile_unit {
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{language @DW_LANG_C_plus_plus}
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{name "<artificial>"}
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} {
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imported_unit {
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{import %$cu_label}
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}
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subprogram {
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{abstract_origin %$main_label}
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{low_pc $main_start addr}
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{high_pc "$main_start + $main_length" addr}
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} {
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subprogram {
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{abstract_origin %$doit_label}
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{low_pc $doit_start addr}
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{high_pc "$doit_start + $doit_length" addr}
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} {
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formal_parameter {
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{abstract_origin %$doit_self_label}
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}
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}
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DW_TAG_variable {
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{abstract_origin %$foo_label}
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{location 4 data1}
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}
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}
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}
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}
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cu {} {
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cu_label: compile_unit {
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{language @DW_LANG_C_plus_plus}
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{name "imported_unit.c"}
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} {
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int_label: base_type {
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{byte_size $int_size sdata}
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{encoding @DW_ATE_signed}
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{name int}
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}
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main_label: subprogram {
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{name main}
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{type :$int_label}
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{external 1 flag}
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} {
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Foo_label: class_type {
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{name Foo}
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{byte_size 1 sdata}
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} {
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doit_label: subprogram {
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{name doit}
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{type :$int_label}
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{accessibility 1 DW_FORM_data1}
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} {
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doit_self_label: formal_parameter {
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{name this}
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{artificial 1 DW_FORM_flag_present}
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{type :$Foo_pointer_type}
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}
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}
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Foo_pointer_type: pointer_type {
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{byte_size $addr_size sdata}
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{type :$Foo_label}
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}
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}
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foo_label: DW_TAG_variable {
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{name foo}
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{type :$Foo_label}
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}
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}
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}
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}
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}
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if { [prepare_for_testing "failed to prepare" ${testfile} \
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[list $srcfile $asm_file] {nodebug}] } {
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return -1
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}
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gdb_test_no_output "set language c++"
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# Sanity check
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gdb_test "ptype main" "= int \\(void\\)"
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# Each of these tests caused a segfault prior to fixing BZ 25065.
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gdb_test "ptype main::Foo" "= class Foo \{\\s+public:\\s+int doit\\(void\\);\\s+\}"
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gdb_test "ptype main::foo" "= class Foo \{\\s+public:\\s+int doit\\(void\\);\\s+\}"
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