# Copyright 2023-2024 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.
require dwarf2_support

standard_testfile main.c -dw.S

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

    declare_labels uinteger_label discr_1_label
    declare_labels one_label two_label simple_label

    cu { addr_size 4 } {
	compile_unit {
	    {name file1.txt}
	    {language @DW_LANG_Rust}
	} {
	    uinteger_label: DW_TAG_base_type {
		{DW_AT_byte_size 1 DW_FORM_sdata}
		{DW_AT_encoding	 @DW_ATE_unsigned}
		{DW_AT_name	 {unsigned integer}}
	    }

	    one_label: structure_type {
		{name One}
		{byte_size 1 DW_FORM_sdata}
	    } {
		member {
		    {name __0}
		    {type :$uinteger_label}
		    {data_member_location 0 data1}
		}
	    }

	    two_label: structure_type {
		{name Two}
		{byte_size 1 DW_FORM_sdata}
	    } {
		member {
		    {name __0}
		    {type :$uinteger_label}
		    {data_member_location 0 data1}
		}
	    }

	    simple_label: structure_type {
		{name Simple}
		{byte_size 2 DW_FORM_sdata}
	    } {
		variant_part {
		    {discr :$discr_1_label DW_FORM_ref4}
		} {
		    discr_1_label: member {
			{type :$uinteger_label}
			{data_member_location 0 data1}
			{artificial 1 DW_FORM_flag_present}
		    }

		    variant {
			{discr_value 65 udata}
		    } {
			member {
			    {type :$one_label}
			    {data_member_location 1 data1}
			}
		    }

		    variant {
		    } {
			member {
			    {type :$two_label}
			    {data_member_location 1 data1}
			}
		    }
		}
	    }

	    # In PR rust/31005, a constant Rust enum value could not
	    # be correctly resolved.
	    DW_TAG_variable {
		{name constant_variable}
		{const_value 0x4141 udata}
		{type :$simple_label}
	    }
	    DW_TAG_variable {
		{name constant_variable2}
		{const_value "AA" DW_FORM_block1}
		{type :$simple_label}
	    }
	}
    }
}

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

gdb_test_no_output "set language rust"

gdb_test "print constant_variable" [string_to_regexp "One(65)"]
gdb_test "print constant_variable2" [string_to_regexp "One(65)"]