1 # Tests for anonymous union support.
2 # Copyright 1998-2021 Free Software Foundation, Inc.
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.
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.
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/>.
17 # Written by Satish Pai <pai@apollo.hp.com> 1997-08-19
19 # This file is part of the gdb testsuite
22 # test running programs
26 if { [skip_cplus_tests] } { continue }
30 if {[prepare_for_testing "failed to prepare" $testfile $srcfile {debug c++}]} {
34 if ![runto_main] then {
35 perror "couldn't run to breakpoint"
39 gdb_test_no_output "set width 0"
41 #send_gdb "ptype foo\n"
43 # -re "\r\n$gdb_prompt $" {
46 # -re ".*$gdb_prompt $" { fail "ptype foo" }
47 # timeout { fail "(timeout) ptype foo" }
50 #send_gdb "ptype bar\n"
52 # -re "\r\n$gdb_prompt $" {
55 # -re ".*$gdb_prompt $" { fail "ptype foo" }
56 # timeout { fail "(timeout) ptype foo" }
59 # NOTE: Add -- ptype foo.x, etc. when things are working
62 gdb_test "next" "40\[ \t\]*foo.paper = 33;" "next 1"
64 # Print out the big anon union.
65 gdb_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\}\}" \
69 # Step over assignment to member
71 gdb_test "next" "41\[ \t\]*foo.pebble = 44;" "next 2"
73 # Now print out anon union again
74 gdb_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\}\}" \
78 # Modify the member just set
79 gdb_test_no_output "set var foo.cloth = 35" "set var foo.cloth"
81 # Now print out anon union again to see if the right member was set
82 gdb_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\}\}" \
86 # Step over next assignment to member
88 gdb_test "next" "42\[ \t\]*foo.mux = 55;" "next 3"
90 # Now print out anon union again
91 gdb_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\}\}" \
95 # Modify the member just set
96 gdb_test_no_output "set var foo.pebble = 45" "set var foo.pebble"
98 # Now print out anon union again to see if the right member was set
99 gdb_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\}\}" \
103 # Modify another member at a different level
104 gdb_test_no_output "set var foo.qux = 46" "set var foo.qux"
106 # Now print out anon union again to see if the right member was set
107 gdb_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\}\}" \
111 # Modify the member at another level, but not the first one in the union
112 gdb_test_no_output "set var foo.mux = 47" "set var foo.mux"
114 # Now print out anon union again to see if things worked
115 gdb_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\}\}" \
119 # Modify a member of a struct in an anon union
120 gdb_test_no_output "set var foo.x.rock = 48" "set var foo.x.rock"
122 # Now print out anon union again to see if things worked
123 gdb_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\}\}" \
127 # Modify a member of a struct in an anon union, but something
128 # that doesn't alias to some other union member
129 gdb_test_no_output "set var foo.x.rock2 = 49" "set var foo.x.rock2"
131 # Now print out anon union again to see if things worked
132 gdb_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\}\}" \
136 # Step over next four assignments
137 gdb_test "next 4" "53\[ \t\]*w = 45;"
139 # Tests for anon unions that are not members of a class or struct
141 gdb_test "print w" "\\$\[0-9\]* = 0" "print w 1"
143 gdb_test "print z" "\\$\[0-9\]* = 0" "print z 1"
145 # Step over next assignment to w
146 gdb_test "next" "55\[ \t\]*int j = 0;" "next 5"
148 # See if the change in value is noticed
149 gdb_test "print w" "\\$\[0-9\]* = 45" "print w 2"
151 # See if z shows the same value
152 gdb_test "print z" "\\$\[0-9\]* = 45" "print z 2"
154 # Set the anon union member
155 gdb_test_no_output "set var z = 27" "set var z"
157 # See if the change in value is noticed
158 gdb_test "print w" "\\$\[0-9\]* = 27" "print w 3"
160 # See if z shows the same value
161 gdb_test "print z" "\\$\[0-9\]* = 27" "print z 3"