1# Tests for anonymous union support.
2# Copyright 1998-2023 Free Software Foundation, Inc.
3
4# This program is free software; you can redistribute it and/or modify
5# it under the terms of the GNU General Public License as published by
6# the Free Software Foundation; either version 3 of the License, or
7# (at your option) any later version.
8#
9# This program is distributed in the hope that it will be useful,
10# but WITHOUT ANY WARRANTY; without even the implied warranty of
11# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12# GNU General Public License for more details.
13#
14# You should have received a copy of the GNU General Public License
15# along with this program.  If not, see <http://www.gnu.org/licenses/>.
16
17# Written by Satish Pai <pai@apollo.hp.com> 1997-08-19
18
19# This file is part of the gdb testsuite
20
21#
22# test running programs
23#
24
25
26if { [skip_cplus_tests] } { continue }
27
28standard_testfile .cc
29
30if {[prepare_for_testing "failed to prepare" $testfile $srcfile {debug c++}]} {
31    return -1
32}
33
34if {![runto_main]} {
35    continue
36}
37
38gdb_test_no_output "set width 0"
39
40#send_gdb "ptype foo\n"
41#gdb_expect {
42#   -re "\r\n$gdb_prompt $" {
43#      pass "ptype foo"
44#    }
45#    -re ".*$gdb_prompt $" { fail "ptype foo" }
46#    timeout { fail "(timeout) ptype foo" }
47#}
48
49#send_gdb "ptype bar\n"
50#gdb_expect {
51#   -re "\r\n$gdb_prompt $" {
52#      pass "ptype foo"
53#    }
54#    -re ".*$gdb_prompt $" { fail "ptype foo" }
55#    timeout { fail "(timeout) ptype foo" }
56#}
57
58# NOTE: Add -- ptype foo.x, etc. when things are working
59
60#Initialize foo
61gdb_test "next" "40\[ \t\]*foo.paper = 33;" "next 1"
62
63# Print out the big anon union.
64gdb_test "print foo" \
65    "\\$\[0-9\]* = \{num1 = \{zero = 0, one = 0\}, \{pebble = 0, x = \{rock = 0, rock2 = 0\}, \{qux = 0, mux = 0\}, boulder = 0\}, \{paper = 0, cloth = 0\}, num2 = \{two = 0, three = 0\}\}" \
66    "print foo 1"
67
68# Step over assignment to member
69
70gdb_test "next" "41\[ \t\]*foo.pebble = 44;" "next 2"
71
72# Now print out anon union again
73gdb_test "print foo" \
74    "\\$\[0-9\]* = \{num1 = \{zero = 0, one = 0\}, \{pebble = 0, x = \{rock = 0, rock2 = 0\}, \{qux = 0, mux = 0\}, boulder = 0\}, \{paper = 33, cloth = 33\}, num2 = \{two = 0, three = 0\}\}" \
75    "print foo 2"
76
77# Modify the member just set
78gdb_test_no_output "set var foo.cloth = 35" "set var foo.cloth"
79
80# Now print out anon union again to see if the right member was set
81gdb_test "print foo" \
82    "\\$\[0-9\]* = \{num1 = \{zero = 0, one = 0\}, \{pebble = 0, x = \{rock = 0, rock2 = 0\}, \{qux = 0, mux = 0\}, boulder = 0\}, \{paper = 35, cloth = 35\}, num2 = \{two = 0, three = 0\}\}" \
83    "print foo 3"
84
85# Step over next assignment to member
86
87gdb_test "next" "42\[ \t\]*foo.mux = 55;" "next 3"
88
89# Now print out anon union again
90gdb_test "print foo" \
91    "\\$\[0-9\]* = \{num1 = \{zero = 0, one = 0\}, \{pebble = 44, x = \{rock = 44, rock2 = 0\}, \{qux = 44, mux = 44\}, boulder = 44\}, \{paper = 35, cloth = 35\}, num2 = \{two = 0, three = 0\}\}" \
92    "print foo 4"
93
94# Modify the member just set
95gdb_test_no_output "set var foo.pebble = 45" "set var foo.pebble"
96
97# Now print out anon union again to see if the right member was set
98gdb_test "print foo" \
99    "\\$\[0-9\]* = \{num1 = \{zero = 0, one = 0\}, \{pebble = 45, x = \{rock = 45, rock2 = 0\}, \{qux = 45, mux = 45\}, boulder = 45\}, \{paper = 35, cloth = 35\}, num2 = \{two = 0, three = 0\}\}" \
100    "print foo 5"
101
102# Modify another member at a different level
103gdb_test_no_output "set var foo.qux = 46" "set var foo.qux"
104
105# Now print out anon union again to see if the right member was set
106gdb_test "print foo" \
107    "\\$\[0-9\]* = \{num1 = \{zero = 0, one = 0\}, \{pebble = 46, x = \{rock = 46, rock2 = 0\}, \{qux = 46, mux = 46\}, boulder = 46\}, \{paper = 35, cloth = 35\}, num2 = \{two = 0, three = 0\}\}" \
108    "print foo 6"
109
110# Modify the member at another level, but not the first one in the union
111gdb_test_no_output "set var foo.mux = 47" "set var foo.mux"
112
113# Now print out anon union again to see if things worked
114gdb_test "print foo" \
115    "\\$\[0-9\]* = \{num1 = \{zero = 0, one = 0\}, \{pebble = 47, x = \{rock = 47, rock2 = 0\}, \{qux = 47, mux = 47\}, boulder = 47\}, \{paper = 35, cloth = 35\}, num2 = \{two = 0, three = 0\}\}" \
116    "print foo 7"
117
118# Modify a member of a struct in an anon union
119gdb_test_no_output "set var foo.x.rock = 48" "set var foo.x.rock"
120
121# Now print out anon union again to see if things worked
122gdb_test "print foo" \
123    "\\$\[0-9\]* = \{num1 = \{zero = 0, one = 0\}, \{pebble = 48, x = \{rock = 48, rock2 = 0\}, \{qux = 48, mux = 48\}, boulder = 48\}, \{paper = 35, cloth = 35\}, num2 = \{two = 0, three = 0\}\}" \
124    "print foo 8"
125
126# Modify a member of a struct in an anon union, but something
127# that doesn't alias to some other union member
128gdb_test_no_output "set var foo.x.rock2 = 49" "set var foo.x.rock2"
129
130# Now print out anon union again to see if things worked
131gdb_test "print foo" \
132    "\\$\[0-9\]* = \{num1 = \{zero = 0, one = 0\}, \{pebble = 48, x = \{rock = 48, rock2 = 49\}, \{qux = 48, mux = 48\}, boulder = 48\}, \{paper = 35, cloth = 35\}, num2 = \{two = 0, three = 0\}\}" \
133    "print foo 9"
134
135# Step over next four assignments
136gdb_test "next 4" "53\[ \t\]*w = 45;"
137
138# Tests for anon unions that are not members of a class or struct
139
140gdb_test "print w" "\\$\[0-9\]* = 0" "print w 1"
141
142gdb_test "print z" "\\$\[0-9\]* = 0" "print z 1"
143
144# Step over next assignment to w
145gdb_test "next" "55\[ \t\]*int j = 0;" "next 5"
146
147# See if the change in value is noticed
148gdb_test "print w" "\\$\[0-9\]* = 45" "print w 2"
149
150# See if z shows the same value
151gdb_test "print z" "\\$\[0-9\]* = 45" "print z 2"
152
153# Set the anon union member
154gdb_test_no_output "set var z = 27" "set var z"
155
156# See if the change in value is noticed
157gdb_test "print w" "\\$\[0-9\]* = 27" "print w 3"
158
159# See if z shows the same value
160gdb_test "print z" "\\$\[0-9\]* = 27" "print z 3"
161