gdb/testsuite/gdb.base/gdbvars.exp

   1 # Copyright (C) 1992-2019 Free Software Foundation, Inc.
   2
   3 # This program is free software; you can redistribute it and/or modify
   4 # it under the terms of the GNU General Public License as published by
   5 # the Free Software Foundation; either version 3 of the License, or
   6 # (at your option) any later version.
   7 #
   8 # This program is distributed in the hope that it will be useful,
   9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 # GNU General Public License for more details.
  12 #
  13 # You should have received a copy of the GNU General Public License
  14 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15
  16 # This file was written by Fred Fish. (fnf@cygnus.com)
  17
  18
  19 standard_testfile
  20
  21 if {[prepare_for_testing "failed to prepare" $testfile $srcfile debug]} {
  22     return -1
  23 }
  24
  25 proc test_convenience_variables {} {
  26     global gdb_prompt
  27
  28     gdb_test_no_output "set \$foo = 101" \
  29         "Set a new convenience variable"
  30
  31     gdb_test "print \$foo"              " = 101" \
  32         "Print contents of new convenience variable"
  33
  34     gdb_test_no_output "set \$foo = 301" \
  35         "Set convenience variable to a new value"
  36
  37     gdb_test "print \$foo"              " = 301" \
  38         "Print new contents of convenience variable"
  39
  40     gdb_test_no_output "set \$_ = 11" \
  41         "Set convenience variable \$_"
  42
  43     gdb_test "print \$_"                " = 11" \
  44         "Print contents of convenience variable \$_"
  45
  46     gdb_test "print \$foo + 10" " = 311" \
  47         "Use convenience variable in arithmetic expression"
  48
  49     gdb_test "print (\$foo = 32) + 4"   " = 36" \
  50         "Use convenience variable assignment in arithmetic expression"
  51
  52     gdb_test "print \$bar"              " = void" \
  53         "Print contents of uninitialized convenience variable"
  54
  55
  56     gdb_test "print \$str = \"some string\"" \
  57         " = \"some string\"" \
  58         "Set convenience variable to string value"
  59     gdb_test "print \$str = \"some other string\"" \
  60         " = \"some other string\"" \
  61         "Change convenience variable to different string value"
  62
  63     gdb_test "print \$arr = {1, 2, 3}" \
  64         " = \\{1, 2, 3\\}" \
  65         "Set convenience variable to array value"
  66     gdb_test "print \$arr = {0, 1, 2, 3}" \
  67         " = \\{0, 1, 2, 3\\}" \
  68         "Set convenience variable to different array value"
  69 }
  70
  71 proc test_convenience_functions {} {
  72     gdb_test "print \$_isvoid" " = <internal function _isvoid>" \
  73         "Print internal function \$_isvoid"
  74
  75     gdb_test "print \$isvoid_foo" " = void" \
  76         "Print void convenience variable"
  77
  78     gdb_test "print \$_isvoid (\$isvoid_foo)" " = 1" \
  79         "Check whether void convenience variable is void"
  80
  81     gdb_test_no_output "set \$isvoid_foo = 1" \
  82         "Set void convenience variable to 1"
  83
  84     gdb_test "print \$_isvoid (\$isvoid_foo)" " = 0" \
  85         "Check whether non-void convenience variable is void"
  86
  87     # For the next test, we need the inferior to be running.
  88     if { ![runto_main] } {
  89         return -1
  90     }
  91
  92     gdb_test "print \$_isvoid (foo_void ())" " = 1" \
  93         "Check whether void function is void"
  94
  95     gdb_test "print \$_isvoid (foo_int ())" " = 0" \
  96         "Check whether non-void function is void"
  97 }
  98
  99 proc test_value_history {} {
 100     global gdb_prompt
 101
 102     gdb_test "print 101"        "\\\$1 = 101" \
 103         "Set value-history\[1\] using \$1"
 104
 105     gdb_test "print 102"        "\\\$2 = 102" \
 106         "Set value-history\[2\] using \$2"
 107
 108     gdb_test "print 103"        "\\\$3 = 103" \
 109         "Set value-history\[3\] using \$3"
 110
 111     gdb_test "print \$\$"       "\\\$4 = 102" \
 112         "Print value-history\[MAX-1\] using inplicit index \$\$"
 113
 114     gdb_test "print \$\$"       "\\\$5 = 103" \
 115         "Print value-history\[MAX-1\] again using implicit index \$\$"
 116
 117     gdb_test "print \$" "\\\$6 = 103" \
 118         "Print value-history\[MAX\] using implicit index \$"
 119
 120     gdb_test "print \$\$2"      "\\\$7 = 102" \
 121         "Print value-history\[MAX-2\] using explicit index \$\$2"
 122
 123     gdb_test "print \$0"        "\\\$8 = 102" \
 124         "Print value-history\[MAX\] using explicit index \$0"
 125
 126     gdb_test "print 108"        "\\\$9 = 108"
 127
 128     gdb_test "print \$\$0"      "\\\$10 = 108" \
 129         "Print value-history\[MAX\] using explicit index \$\$0"
 130
 131     gdb_test "print \$1"        "\\\$11 = 101" \
 132         "Print value-history\[1\] using explicit index \$1"
 133
 134     gdb_test "print \$2"        "\\\$12 = 102" \
 135         "Print value-history\[2\] using explicit index \$2"
 136
 137     gdb_test "print \$3"        "\\\$13 = 103" \
 138         "Print value-history\[3\] using explicit index \$3"
 139
 140     gdb_test "print \$-3"       "\\\$14 = 100" \
 141         "Print (value-history\[MAX\] - 3) using implicit index \$"
 142
 143     gdb_test "print \$1 + 3"    "\\\$15 = 104" \
 144         "Use value-history element in arithmetic expression"
 145 }
 146
 147 proc test_with_program {} {
 148     global hex
 149     gdb_test_no_output "set \$prog_var = p" \
 150         "Set a new convenience variable to a program variable"
 151     gdb_test "print /x \$prog_var" " = $hex" \
 152         "Print contents of new convenience variable of program variable"
 153 }
 154
 155 gdb_test_no_output "set print sevenbit-strings"
 156
 157 test_value_history
 158 test_convenience_variables
 159 test_convenience_functions
 160 test_with_program