# Copyright 2017-2020 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/>.

load_lib dwarf.exp

# This test can only be run on targets which support DWARF-2 and use gas.
if {![dwarf2_support]} {
    return 0
}

standard_testfile main.c shortpiece-dw.S

# Make some DWARF for the test.
set asm_file [standard_output_file $srcfile2]
Dwarf::assemble $asm_file {
    global pair

    cu { addr_size 4 } {
	compile_unit {} {
	    declare_labels int_label ushort_label struct_label

	    int_label: DW_TAG_base_type {
		{DW_AT_byte_size 4 DW_FORM_udata}
		{DW_AT_encoding @DW_ATE_unsigned}
		{DW_AT_name "myint"}
	    }
	    ushort_label: DW_TAG_base_type {
		{DW_AT_byte_size 2 DW_FORM_udata}
		{DW_AT_encoding @DW_ATE_unsigned}
		{DW_AT_name "myushort"}
	    }

	    struct_label: DW_TAG_structure_type {
		{DW_AT_name "S"}
		{DW_AT_byte_size 8 DW_FORM_udata}
	    } {
		DW_TAG_member {
		    {DW_AT_name "a"}
		    {DW_AT_type :${int_label}}
		    {DW_AT_data_member_location 0 DW_FORM_udata}
		}

		DW_TAG_member {
		    {DW_AT_name "b"}
		    {DW_AT_type :${ushort_label}}
		    {DW_AT_data_member_location 4 DW_FORM_udata}
		}
	    }

	    DW_TAG_variable {
		{DW_AT_name "s1"}
		{DW_AT_type :${struct_label}}
		{DW_AT_external 1 DW_FORM_flag}
		{DW_AT_location {
		    DW_OP_constu 1
		    DW_OP_stack_value
		    DW_OP_piece 4
		    DW_OP_constu 0
		    DW_OP_stack_value
		    DW_OP_piece 2
		} SPECIAL_expr}
	    }

	    DW_TAG_variable {
		{DW_AT_name "s2"}
		{DW_AT_type :${struct_label}}
		{DW_AT_external 1 DW_FORM_flag}
		{DW_AT_location {
		    DW_OP_constu 1
		    DW_OP_stack_value
		    DW_OP_piece 4
		    DW_OP_constu 0
		    DW_OP_stack_value
		    DW_OP_piece 8
		} SPECIAL_expr}
	    }
	}
    }
}

if { [prepare_for_testing "failed to prepare" ${testfile} \
			  [list $srcfile $asm_file] {nodebug}] } {
    return -1
}

gdb_test "p s1" " = {a = 1, b = 0}"
gdb_test "p s2" \
    "access outside bounds of object referenced via synthetic pointer"