gdb/testsuite/gdb.dlang/watch-loc.exp

# Copyright (C) 2017-2021 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 symbol lookup when there are multiple circular imports.

load_lib "d-support.exp"
load_lib "dwarf.exp"

if { [skip_d_tests] } { return -1 }

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

standard_testfile watch-loc.c watch-loc-dw.S

lassign [function_range _Dmain ${srcdir}/${subdir}/${srcfile}] \
    dmain_start dmain_length


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

    cu { label cu_start } {
	compile_unit {
	    {language @DW_LANG_D}
	} {
	    declare_labels watch_module_label watch_struct_label

	    watch_module_label: module {
		{name watch}
	    } {
		watch_struct_label: structure_type {
		    {name tstruct}
		    {byte_size 1 data1}
		}

		tag_variable {
		    {name my_data}
		    {type :$watch_struct_label}
		    {location {
			addr [gdb_target_symbol my_data]
		    } SPECIAL_expr}
		    {external 1 flag}
		}

		subprogram {
		    {MACRO_AT_func { "_Dmain" }}
		    {external 1 flag_present}
		}
	    }
	}
    }

    aranges {} cu_start {
	arange {} $dmain_start $dmain_length
    }
}

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

gdb_test_no_output "set language d"

if {![runto "_Dmain"]} {
    return -1
}

# watch -l will rewrite the expression to "*(watch.tstruct *) 0x12345",
# this should not cause syntax error in the cast expression.
gdb_test "watch -l my_data" ".*atchpoint \[0-9\]+: -location my_data"

# Same test as above, but done explicitly.
gdb_test "print *(watch.tstruct *) &my_data" "{<No data fields>}"