gdb/testsuite/gdb.cp/anon-union.exp

   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
  26 if { [skip_cplus_tests] } { continue }
  27
  28 standard_testfile .cc
  29
  30 if {[prepare_for_testing "failed to prepare" $testfile $srcfile {debug c++}]} {
  31     return -1
  32 }
  33
  34 if ![runto_main] then {
  35     perror "couldn't run to breakpoint"
  36     continue
  37 }
  38
  39 gdb_test_no_output "set width 0"
  40
  41 #send_gdb "ptype foo\n"
  42 #gdb_expect {
  43 #   -re "\r\n$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
  62 gdb_test "next" "40\[ \t\]*foo.paper = 33;" "next 1"
  63
  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\}\}" \
  67     "print foo 1"
  68
  69 # Step over assignment to member
  70
  71 gdb_test "next" "41\[ \t\]*foo.pebble = 44;" "next 2"
  72
  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\}\}" \
  76     "print foo 2"
  77
  78 # Modify the member just set
  79 gdb_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
  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\}\}" \
  84     "print foo 3"
  85
  86 # Step over next assignment to member
  87
  88 gdb_test "next" "42\[ \t\]*foo.mux = 55;" "next 3"
  89
  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\}\}" \
  93     "print foo 4"
  94
  95 # Modify the member just set
  96 gdb_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
  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\}\}" \
 101     "print foo 5"
 102
 103 # Modify another member at a different level
 104 gdb_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
 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\}\}" \
 109     "print foo 6"
 110
 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"
 113
 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\}\}" \
 117     "print foo 7"
 118
 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"
 121
 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\}\}" \
 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
 129 gdb_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
 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\}\}" \
 134     "print foo 9"
 135
 136 # Step over next four assignments
 137 gdb_test "next 4" "53\[ \t\]*w = 45;"
 138
 139 # Tests for anon unions that are not members of a class or struct
 140
 141 gdb_test "print w" "\\$\[0-9\]* = 0" "print w 1"
 142
 143 gdb_test "print z" "\\$\[0-9\]* = 0" "print z 1"
 144
 145 # Step over next assignment to w
 146 gdb_test "next" "55\[ \t\]*int j = 0;" "next 5"
 147
 148 # See if the change in value is noticed
 149 gdb_test "print w" "\\$\[0-9\]* = 45" "print w 2"
 150
 151 # See if z shows the same value
 152 gdb_test "print z" "\\$\[0-9\]* = 45" "print z 2"
 153
 154 # Set the anon union member
 155 gdb_test_no_output "set var z = 27" "set var z"
 156
 157 # See if the change in value is noticed
 158 gdb_test "print w" "\\$\[0-9\]* = 27" "print w 3"
 159
 160 # See if z shows the same value
 161 gdb_test "print z" "\\$\[0-9\]* = 27" "print z 3"