gdb/testsuite/gdb.base/arithmet.exp

   1 # Copyright 1998-2017 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 # Rewritten to use gdb_test by Michael Chastain (chastain@redhat.com)
  18
  19 # This file is part of the gdb testsuite
  20 #
  21 # tests for correctness of arithmetic operators, associativity and precedence
  22 # with integer type variables
  23 #
  24
  25 #
  26 # test running programs
  27 #
  28
  29 standard_testfile int-type.c
  30
  31 if {[prepare_for_testing "failed to prepare" $testfile $srcfile {debug nowarnings}]} {
  32     return -1
  33 }
  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 gdb_test_no_output "set variable x=14"
  50 gdb_test_no_output "set variable y=2"
  51 gdb_test_no_output "set variable z=2"
  52 gdb_test_no_output "set variable w=3"
  53
  54 gdb_test "print x" "14"
  55 gdb_test "print y"  "2"
  56 gdb_test "print z"  "2"
  57 gdb_test "print w"  "3"
  58
  59 gdb_test "print x+y" "16"
  60 gdb_test "print x-y" "12"
  61 gdb_test "print x*y" "28"
  62 gdb_test "print x/y"  "7"
  63 gdb_test "print x%y"  "0"
  64
  65 #  x  y  z  w
  66 # 14  2  2  3
  67
  68 # Test associativity of +, -, *, % ,/
  69
  70 gdb_test "print x+y+z" "18"
  71 gdb_test "print x-y-z" "10"
  72 gdb_test "print x*y*z" "56"
  73 gdb_test "print x/y/z"  "3"
  74 gdb_test "print x%y%z"  "0"
  75
  76 # test precedence rules on pairs of arithmetic operators
  77
  78 gdb_test_no_output "set variable x=10"
  79 gdb_test_no_output "set variable y=4"
  80
  81 #  x  y  z  w
  82 # 10  4  2  3
  83
  84 gdb_test "print x+y-z" "12"
  85 gdb_test "print x+y*z" "18"
  86 gdb_test "print x+y%w" "11"
  87 gdb_test "print x+y/w" "11"
  88 gdb_test "print x-y*z"  "2"
  89 gdb_test "print x-y%z" "10"
  90 gdb_test "print x-y/z"  "8"
  91 gdb_test "print x*y/z" "20"
  92 gdb_test "print x*y%w"  "1"
  93 gdb_test "print x/y%w"  "2"
  94
  95 # test use of parentheses to enforce different order of evaluation
  96
  97 gdb_test "print x-(y+w)"  "3"
  98 gdb_test "print x/(y*w)"  "0"
  99 gdb_test "print x-(y/w)"  "9"
 100 gdb_test "print (x+y)*w" "42"