# Copyright 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/>.

# Check that GDB doesn't crash on invalid dwarf, specifically an inter-CU
# reference pointing to a dummy CU.

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 .S

# Create the DWARF.
set asm_file [standard_output_file $srcfile2]
Dwarf::assemble $asm_file {
    declare_labels label1

    cu {} {
	compile_unit {{language @DW_LANG_C}} {
	    subprogram {
		{MACRO_AT_range { main }}
		{DW_AT_specification %$label1}
	    }
	}
    }

    label1: cu {} {
    }
}

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

gdb_assert \
    { [regexp "DWARF Error: cannot follow reference" $gdb_file_cmd_msg] } \
    "Error message"