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

   1 # Tests for anonymous union support.
   2 # Copyright 1998-2024 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 require allow_cplus_tests
  27
  28 standard_testfile .cc
  29
  30 if {[prepare_for_testing "failed to prepare" $testfile $srcfile {debug c++}]} {
  31     return -1
  32 }
  33
  34 if {![runto_main]} {
  35     continue
  36 }
  37
  38 gdb_test_no_output "set width 0"
  39
  40 #send_gdb "ptype foo\n"
  41 #gdb_expect {
  42 #   -re "\r\n$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
  61 gdb_test "next" "40\[ \t\]*foo.paper = 33;" "next 1"
  62
  63 # Print out the big anon union.
  64 gdb_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
  70 gdb_test "next" "41\[ \t\]*foo.pebble = 44;" "next 2"
  71
  72 # Now print out anon union again
  73 gdb_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
  78 gdb_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
  81 gdb_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
  87 gdb_test "next" "42\[ \t\]*foo.mux = 55;" "next 3"
  88
  89 # Now print out anon union again
  90 gdb_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
  95 gdb_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
  98 gdb_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
 103 gdb_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
 106 gdb_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
 111 gdb_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
 114 gdb_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
 119 gdb_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
 122 gdb_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
 128 gdb_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
 131 gdb_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
 136 gdb_test "next 4" "53\[ \t\]*w = 45;"
 137
 138 # Tests for anon unions that are not members of a class or struct
 139
 140 gdb_test "print w" "\\$\[0-9\]* = 0" "print w 1"
 141
 142 gdb_test "print z" "\\$\[0-9\]* = 0" "print z 1"
 143
 144 # Step over next assignment to w
 145 gdb_test "next" "55\[ \t\]*int j = 0;" "next 5"
 146
 147 # See if the change in value is noticed
 148 gdb_test "print w" "\\$\[0-9\]* = 45" "print w 2"
 149
 150 # See if z shows the same value
 151 gdb_test "print z" "\\$\[0-9\]* = 45" "print z 2"
 152
 153 # Set the anon union member
 154 gdb_test_no_output "set var z = 27" "set var z"
 155
 156 # See if the change in value is noticed
 157 gdb_test "print w" "\\$\[0-9\]* = 27" "print w 3"
 158
 159 # See if z shows the same value
 160 gdb_test "print z" "\\$\[0-9\]* = 27" "print z 3"