gdb/testsuite/gdb.base/relational.exp

   1 # Copyright 1998-2020 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 Elena Zannoni (ezannoni@cygnus.com)
  17
  18 # This file is part of the gdb testsuite
  19 #
  20 # tests for correctenss of relational operators, associativity and precedence
  21 # with integer type variables
  22 #
  23
  24 #
  25 # test running programs
  26 #
  27
  28 if { [prepare_for_testing "failed to prepare" relational int-type.c {debug nowarnings}] } {
  29     return -1
  30 }
  31
  32 if [get_compiler_info] {
  33     return -1
  34 }
  35
  36 #
  37 # set it up at a breakpoint so we can play with the variable values
  38 #
  39
  40 if ![runto_main] then {
  41     perror "couldn't run to breakpoint"
  42     continue
  43 }
  44
  45 #
  46 # test expressions with "int" types
  47 #
  48
  49 with_test_prefix "int types" {
  50
  51     gdb_test_no_output "set variable x=14" "set variable x=14"
  52     gdb_test_no_output "set variable y=2" "set variable y=2"
  53     gdb_test_no_output "set variable z=2" "set variable z=2"
  54     gdb_test_no_output "set variable w=3" "set variable w=3"
  55
  56     gdb_test "print x" " = 14" "print value of x"
  57
  58     gdb_test "print y" " = 2" "print value of y"
  59
  60     gdb_test "print z" " = 2" "print value of z"
  61
  62     gdb_test "print w" " = 3" "print value of w"
  63
  64     gdb_test "print x < y" "$false" "print value of x<y"
  65
  66     gdb_test "print x <= y" "$false" "print value of x<=y"
  67
  68     gdb_test "print x > y" "$true" "print value of x>y"
  69
  70     gdb_test "print x >= y" "$true" "print value of x>=y"
  71
  72     gdb_test "print x == y" "$false" "print value of x==y"
  73
  74     gdb_test "print x != y" "$true" "print value of x!=y"
  75 }
  76
  77 # Test associativity of <, >, <=, >=, ==, !=
  78 with_test_prefix "basic associativity" {
  79
  80     gdb_test_no_output "set variable x=3" "set variable x=3"
  81     gdb_test_no_output "set variable y=5" "set variable y=5"
  82     gdb_test_no_output "set variable z=2" "set variable z=2"
  83
  84     gdb_test "print x < y < z" "$true" "print value of x<y<z"
  85
  86     gdb_test "print x <= y <= z" "$true" "print value of x<=y<=z"
  87
  88     gdb_test "print x > y > z" "$false" "print value of x>y>z"
  89
  90     gdb_test "print x >= y >= z" "$false" "print value of x>=y>=z"
  91
  92     gdb_test_no_output "set variable x=2" "set variable x=2"
  93     gdb_test_no_output "set variable y=2" "set variable y=2"
  94     gdb_test_no_output "set variable z=1" "set variable z=1"
  95
  96     gdb_test "print x == y == z" "$true" "print value of x==y==z"
  97
  98     gdb_test_no_output "set variable z=0" "set variable z"
  99
 100     gdb_test "print x != y != z" "$false" "print value of x!=y!=z"
 101 }
 102
 103 # Test precedence rules on pairs of relational operators.  The use of
 104 # with_test_prefix with keys 1, 2, 3, etc is only to ensure that the
 105 # test names are unique.  Each nested group of tests starts at a
 106 # location where we are setting a variable to a value it has had in
 107 # the past, which would result in a test name repeating.
 108 with_test_prefix "pair associativity" {
 109     with_test_prefix "1" {
 110         gdb_test_no_output "set variable x=0" "set variable x=0"
 111         gdb_test_no_output "set variable y=2" "set variable y=2"
 112         gdb_test_no_output "set variable z=2" "set variable z=2"
 113
 114         gdb_test "print x < y == z" "$false" "print value of x<y==z"
 115
 116         # 0  2  2
 117         gdb_test "print x < y != z" "$true" "print value of x<y!=z"
 118
 119         gdb_test_no_output "set variable x=2" "set variable x=2"
 120         gdb_test_no_output "set variable y=3" "set variable y=3"
 121         gdb_test_no_output "set variable z=1" "set variable z=1"
 122
 123         # 2 3 1
 124         gdb_test "print x < y <= z" "$true" "print value of x<y<=z"
 125
 126         # 2 3 1
 127         gdb_test "print x < y >= z" "$true" "print value of x<y>=z"
 128
 129         gdb_test_no_output "set variable z=0" " set variable z=0"
 130
 131         # 2 3 0
 132         gdb_test "print x < y > z" "$true" "print value of x<y>z"
 133
 134         gdb_test_no_output "set variable x=1" " set variable x=1"
 135
 136         # 1 3 0
 137         gdb_test "print x > y >= z" "$true" "print value of x>y>=z"
 138     }
 139
 140     with_test_prefix "2" {
 141         gdb_test_no_output "set variable z=2" " set variable z=2"
 142
 143         # 1 3 2
 144         gdb_test "print x > y == z" "$false" "print value of x>y==z"
 145
 146         gdb_test_no_output "set variable x=2" " set variable x=2"
 147         gdb_test_no_output "set variable z=0" " set variable z=0"
 148
 149         # 2 3 0
 150         gdb_test "print x > y != z" "$false" "print value of x>y!=z"
 151
 152         gdb_test_no_output "set variable x=4" "set variable x=4"
 153
 154         # 4 3 0
 155         gdb_test "print x > y <= z" "$false" "print value of x>y<=z"
 156
 157         # 4 3 0
 158         gdb_test "print x >= y == z" "$false" "print value of x>=y==z"
 159     }
 160
 161     with_test_prefix "3" {
 162         gdb_test_no_output "set variable x=2" " set variable x=2"
 163
 164         # 2 3 0
 165         gdb_test "print x >= y != z" "$false" "print value of x>=y!=z"
 166
 167         gdb_test_no_output "set variable x=0" " set variable x=0"
 168         gdb_test_no_output "set variable z=4" " set variable z=4"
 169
 170         # 0 3 4
 171         gdb_test "print x >= y <= z" "$true" "print value of x>=y<=z"
 172
 173         # 0 3 4
 174         gdb_test "print x <= y == z" "$false" "print value of x<=y==z"
 175     }
 176
 177     with_test_prefix "4" {
 178         gdb_test_no_output "set variable x=2" " set variable x=2"
 179
 180         # 2 3 4
 181         gdb_test "print x <= y != z" "$true" "print value of x<=y!=z"
 182
 183         # 2 3 4
 184         gdb_test "print x == y != z" "$true" "print value of x==y!=z"
 185     }
 186 }
 187
 188 # test use of parenthesis to enforce different order of evaluation
 189 with_test_prefix "with parenthesis" {
 190     gdb_test_no_output "set variable z=0" " set variable z=0"
 191
 192     # 2 3 0
 193     gdb_test "print x >= (y < z)" "$true" "print value of x>=(y<z)"
 194
 195     # 2 3 0
 196     gdb_test "print x >= (y != z)" "$true" "print value of x>=(y!=z)"
 197
 198     # 2 3 0
 199     gdb_test "print x == (y == z)" "$false" "print value of x==(y==z)"
 200
 201     gdb_test_no_output "set variable x=1" " set variable x=1"
 202     gdb_test_no_output "set variable z=4" " set variable z=4"
 203
 204     # 1 3 4
 205     gdb_test "print (x == y) < z" "$true" "print value of (x==y)<z"
 206 }
 207