# Copyright 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/>.

# Test that a concrete var importing an abstract var using
# DW_AT_abstract_origin inherits the DW_AT_const_value attribute.

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 .S

set executable ${testfile}
set asm_file [standard_output_file ${srcfile2}]

# We need to know the size of integer type in order
# to write some of the debugging info we'd like to generate.
if [prepare_for_testing "failed to prepare" ${testfile} ${srcfile}] {
    return -1
}

# Create the DWARF.
Dwarf::assemble $asm_file {
    declare_labels cu_label main_label int_label
    declare_labels aaa_label
    set int_size [get_sizeof "int" 4]

    cu {} {
	cu_label: partial_unit {
	    {language @DW_LANG_C}
	    {name "imported_unit.c"}
	} {
	    int_label: base_type {
		{byte_size $int_size sdata}
		{encoding @DW_ATE_signed}
		{name int}
	    }

	    aaa_label: DW_TAG_variable {
		{name aaa}
		{type :$int_label}
		{const_value 1 DW_FORM_sdata}
	    }

	    main_label: subprogram {
		{name main}
		{type :$int_label}
		{external 1 flag}
	    }
	}
    }

    cu {} {
	compile_unit {
	    {language @DW_LANG_C}
	    {name "<artificial>"}
	} {
	    DW_TAG_variable {
		{abstract_origin %$aaa_label}
	    }
	    subprogram {
		{abstract_origin %$main_label}
		{MACRO_AT_range {main}}
	    }
	}
    }
}

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

gdb_test "p aaa" "= 1"