1# Copyright 2019-2023 Free Software Foundation, Inc.
2
3# This program is free software; you can redistribute it and/or modify
4# it under the terms of the GNU General Public License as published by
5# the Free Software Foundation; either version 3 of the License, or
6# (at your option) any later version.
7#
8# This program is distributed in the hope that it will be useful,
9# but WITHOUT ANY WARRANTY; without even the implied warranty of
10# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11# GNU General Public License for more details.
12#
13# You should have received a copy of the GNU General Public License
14# along with this program.  If not, see <http://www.gnu.org/licenses/>.
15
16# PR gdb/21855 concerns a crash in "finish" where the function's
17# return type is a typedef of void.
18
19load_lib dwarf.exp
20load_lib gdb-python.exp
21
22# This test can only be run on targets which support DWARF-2 and use gas.
23if {![dwarf2_support]} {
24    return 0
25}
26
27standard_testfile void-type.c .S
28
29# Make some DWARF for the test.
30set asm_file [standard_output_file $srcfile2]
31Dwarf::assemble $asm_file {
32    global srcfile
33
34    cu {} {
35	DW_TAG_compile_unit {
36	        {DW_AT_producer "GNU C 8.1"}
37                {DW_AT_language @DW_LANG_C}
38                {DW_AT_name     $srcfile}
39                {DW_AT_comp_dir /tmp}
40        } {
41	    declare_labels main_type void_typedef
42
43	    main_type: DW_TAG_base_type {
44		{DW_AT_byte_size 4 DW_FORM_sdata}
45		{DW_AT_encoding  @DW_ATE_signed}
46	    }
47
48	    void_typedef: DW_TAG_typedef {
49		{name foo}
50	    }
51
52            DW_TAG_subprogram {
53                {MACRO_AT_func {func}}
54                {type :$void_typedef}
55	    }
56            DW_TAG_subprogram {
57                {MACRO_AT_func {main}}
58                {type :$main_type}
59	    }
60	}
61    }
62}
63
64if { [prepare_for_testing "failed to prepare" ${testfile} \
65	  [list $srcfile $asm_file] {nodebug}] } {
66    return -1
67}
68
69if {![runto_main]} {
70    return -1
71}
72
73gdb_test "break func" "Breakpoint .*" \
74    "set breakpoint in func"
75gdb_continue_to_breakpoint "continue to func"
76
77set skip_python [skip_python_tests]
78if {!$skip_python} {
79    gdb_test "python finishbp = gdb.FinishBreakpoint()" \
80	"Temporary breakpoint.*" "set FinishBreakpoint"
81}
82
83gdb_test "finish" [multi_line \
84		       "Run till exit from #0  $hex in func \\\(\\\)" \
85		       ".*$hex in main \\\(\\\)"]
86
87if {!$skip_python} {
88    gdb_test "python print (finishbp.return_value)" "None" \
89	"check that return_value is None"
90}
91