1# Tests for anonymous union support.
2# Copyright 1998-2020 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 $srcfile {debug c++}]} {
31    return -1
32}
33
34if ![runto_main] then {
35    perror "couldn't run to breakpoint"
36    continue
37}
38
39gdb_test_no_output "set width 0"
40
41#send_gdb "ptype foo\n"
42#gdb_expect {
43#   -re "\r\n$gdb_prompt $" {
44#      pass "ptype foo"
45#    }
46#    -re ".*$gdb_prompt $" { fail "ptype foo" }
47#    timeout { fail "(timeout) ptype foo" }
48#}
49
50#send_gdb "ptype bar\n"
51#gdb_expect {
52#   -re "\r\n$gdb_prompt $" {
53#      pass "ptype foo"
54#    }
55#    -re ".*$gdb_prompt $" { fail "ptype foo" }
56#    timeout { fail "(timeout) ptype foo" }
57#}
58
59# NOTE: Add -- ptype foo.x, etc. when things are working
60
61#Initialize foo
62gdb_test "next" "40\[ \t\]*foo.paper = 33;" "next 1"
63
64# Print out the big anon union.
65gdb_test "print foo" \
66    "\\$\[0-9\]* = \{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\}\}" \
67    "print foo 1"
68
69# Step over assignment to member
70
71gdb_test "next" "41\[ \t\]*foo.pebble = 44;" "next 2"
72
73# Now print out anon union again
74gdb_test "print foo" \
75    "\\$\[0-9\]* = \{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\}\}" \
76    "print foo 2"
77
78# Modify the member just set
79gdb_test_no_output "set var foo.cloth = 35" "set var foo.cloth"
80
81# Now print out anon union again to see if the right member was set
82gdb_test "print foo" \
83    "\\$\[0-9\]* = \{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\}\}" \
84    "print foo 3"
85
86# Step over next assignment to member
87
88gdb_test "next" "42\[ \t\]*foo.mux = 55;" "next 3"
89
90# Now print out anon union again
91gdb_test "print foo" \
92    "\\$\[0-9\]* = \{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\}\}" \
93    "print foo 4"
94
95# Modify the member just set
96gdb_test_no_output "set var foo.pebble = 45" "set var foo.pebble"
97
98# Now print out anon union again to see if the right member was set
99gdb_test "print foo" \
100    "\\$\[0-9\]* = \{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\}\}" \
101    "print foo 5"
102
103# Modify another member at a different level
104gdb_test_no_output "set var foo.qux = 46" "set var foo.qux"
105
106# Now print out anon union again to see if the right member was set
107gdb_test "print foo" \
108    "\\$\[0-9\]* = \{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\}\}" \
109    "print foo 6"
110
111# Modify the member at another level, but not the first one in the union
112gdb_test_no_output "set var foo.mux = 47" "set var foo.mux"
113
114# Now print out anon union again to see if things worked
115gdb_test "print foo" \
116    "\\$\[0-9\]* = \{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\}\}" \
117    "print foo 7"
118
119# Modify a member of a struct in an anon union
120gdb_test_no_output "set var foo.x.rock = 48" "set var foo.x.rock"
121
122# Now print out anon union again to see if things worked
123gdb_test "print foo" \
124    "\\$\[0-9\]* = \{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\}\}" \
125    "print foo 8"
126
127# Modify a member of a struct in an anon union, but something
128# that doesn't alias to some other union member
129gdb_test_no_output "set var foo.x.rock2 = 49" "set var foo.x.rock2"
130
131# Now print out anon union again to see if things worked
132gdb_test "print foo" \
133    "\\$\[0-9\]* = \{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\}\}" \
134    "print foo 9"
135
136# Step over next four assignments
137gdb_test "next 4" "53\[ \t\]*w = 45;"
138
139# Tests for anon unions that are not members of a class or struct
140
141gdb_test "print w" "\\$\[0-9\]* = 0" "print w 1"
142
143gdb_test "print z" "\\$\[0-9\]* = 0" "print z 1"
144
145# Step over next assignment to w
146gdb_test "next" "55\[ \t\]*int j = 0;" "next 5"
147
148# See if the change in value is noticed
149gdb_test "print w" "\\$\[0-9\]* = 45" "print w 2"
150
151# See if z shows the same value
152gdb_test "print z" "\\$\[0-9\]* = 45" "print z 2"
153
154# Set the anon union member
155gdb_test_no_output "set var z = 27" "set var z"
156
157# See if the change in value is noticed
158gdb_test "print w" "\\$\[0-9\]* = 27" "print w 3"
159
160# See if z shows the same value
161gdb_test "print z" "\\$\[0-9\]* = 27" "print z 3"
162