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# Copyright 1998, 1999, 2000, 2007, 2008, 2009, 2010

# Free Software Foundation, Inc.

# This program is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 3 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program.  If not, see .

# This file was written by Elena Zannoni (ezannoni@cygnus.com)

# This file is part of the gdb testsuite

#

# tests for pointer arithmetic and pointer dereferencing

# with integer type variables and pointers to integers

#

if $tracelevel then {

        strace $tracelevel

        }

#

# test running programs

#

set testfile "pointers"

set srcfile ${testfile}.c

set binfile ${objdir}/${subdir}/${testfile}

if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug nowarnings}] != "" } {

     untested pointers.exp

     return -1

    }

if [get_compiler_info ${binfile}] {

    return -1;

}

gdb_exit

gdb_start

gdb_reinitialize_dir $srcdir/$subdir

gdb_load ${binfile}

#

# set it up at a breakpoint so we can play with the variable values

#

if ![runto_main] then {

    perror "couldn't run to breakpoint"

    continue

}

gdb_test "next " "more_code.*;" "continuing after dummy()"

#

# let's see if gdb catches some illegal operations on pointers

#

# I must comment these out because strict type checking is not

# supported in this version of GDB. I do not really know

# what the expected gdb reply is.

#

#send_gdb "print v_int_pointer2 = &v_int_pointer\n"

#gdb_expect {

#    -re ".*.*$gdb_prompt $" {

#        pass "illegal pointer assignment rejected"

#      }

#    -re ".*$gdb_prompt $" { fail "illegal pointer assignment rejected" }

#    timeout           { fail "(timeout) illegal pointer assignment rejected" }

#  }

#send_gdb "print v_unsigned_int_pointer = &v_int\n"

#gdb_expect {

#    -re ".*.*$gdb_prompt $" {

#        pass "illegal pointer assignment rejected"

#      }

#    -re ".*$gdb_prompt $" { fail "illegal pointer assignment rejected" }

#    timeout           { fail "(timeout) ilegal pointer assignment rejected" }

#  }

#send_gdb "print v_unsigned_int_pointer == v_double_pointer\n"

#gdb_expect {

#    -re ".*.*$gdb_prompt $" {

#        pass "illegal pointer operation (+) rejected"

#      }

#    -re ".*$gdb_prompt $" { fail "illegal pointer operation (+) rejected" }

#    timeout           { fail "(timeout) illegal pointer operation (+) rejected" }

#  }

#send_gdb "print v_unsigned_int_pointer * v_double_pointer\n"

#gdb_expect {

#    -re ".*Argument to arithmetic operation not a number or boolean.*$gdb_prompt $" {

#        pass "illegal pointer operation (*) rejected"

#      }

#    -re ".*$gdb_prompt $" { fail "illegal pointer operation (*) rejected" }

#    timeout           { fail "(timeout) illegal pointer operation (*) rejected" }

#  }

#send_gdb "print v_unsigned_int_pointer = v_double_pointer\n"

#gdb_expect {

#    -re ".*.*$gdb_prompt $" {

#        pass "ilegal pointer assignment rejected"

#      }

#    -re ".*$gdb_prompt $" { fail "illegal pointer assignment rejected" }

#    timeout           { fail "(timeout) illegal pointer assignment rejected" }

#  }

#send_gdb "print v_unsigned_int_pointer = v_unsigned_int\n"

#gdb_expect {

#    -re ".*.*$gdb_prompt $" {

#        pass "illegal pointer assignment rejected"

#      }

#    -re ".*$gdb_prompt $" { fail "illegal pointer assignment rejected" }

#    timeout           { fail "(timeout) illegal pointer assignment rejected" }

#  }

gdb_test_no_output "set variable v_int_pointer=&v_int_array\[0\]" \

    "set pointer to beginning of array"

gdb_test_no_output "set variable v_int_pointer2=&v_int_array\[1\]" \

    "set pointer to end of array"

gdb_test "print *v_int_pointer" " = 6" "print object pointed to"

gdb_test "print *v_int_pointer2" " = 18" "print object pointed to \#2"

gdb_test "print v_int_pointer == v_int_pointer2" " = $false" \

    "pointer1==pointer2"

gdb_test "print v_int_pointer != v_int_pointer2" " = $true" \

    "pointer1!=pointer2"

gdb_test "print v_int_pointer <= v_int_pointer2" " = $true" \

    "pointer1<=pointer2"

gdb_test "print v_int_pointer >= v_int_pointer2" " = $false" \

    "pointer1>=pointer2"

gdb_test "print v_int_pointer < v_int_pointer2" " = $true" \

    "pointer1

gdb_test "print v_int_pointer > v_int_pointer2" " = $false" \

    "pointer1>pointer2"

gdb_test_no_output "set variable y = *v_int_pointer++" \

    "set y = *v_int_pointer++"

gdb_test "print y" " = 6" "pointer assignment"

gdb_test "print *v_int_pointer" " = 18" "and post-increment"

gdb_test_no_output "set variable y = *--v_int_pointer2" \

    "set y = *--v_int_pointer2"

gdb_test "print y" " = 6" "pointer assignment"

gdb_test "print *v_int_pointer2" " = 6" "and pre-decrement"

gdb_test_no_output "set variable y =v_int_pointer-v_int_pointer2" \

    "set y =v_int_pointer-v_int_pointer2"

gdb_test "print y" " = 1" "pointer1-pointer2"

gdb_test_no_output "set variable v_int_pointer=v_int_array" \

    "set v_int_pointer=v_int_array"

gdb_test "print *v_int_pointer" " = 6" \

    "print array element through pointer"

gdb_test "print *(v_int_pointer+1)" " = 18" \

    "print array element through pointer \#2"

# test print elements of array through pointers

gdb_test "print (*rptr)\[0\]" " = 0" \

    "print array element through pointer \#3"

gdb_test "print (*rptr)\[1\]" " = 1" \

    "print array element through pointer \#4"

gdb_test "print (*rptr)\[2\]" " = 2" \

    "print array element through pointer \#5"

gdb_test_no_output "set variable rptr = rptr+1" "increment rptr"

gdb_test "print (*rptr)\[0\]" " = 3" \

    "print array element through pointer \#6"

gdb_test "print (*rptr)\[1\]" " = 4" \

    "print array element through pointer \#7"

gdb_test "print (*rptr)\[2\]" " = 5" \

    "print array element through pointer \#8"

gdb_test "print *( *(matrix+1) +2)" " = 5" \

    "print array element w/ pointer arithmetic"

gdb_test "print **ptr_to_ptr_to_float" " = 100" \

    "print through ptr to ptr"

# tests for pointers

# with elementary type variables and pointers.

#

gdb_test "break marker1" ".*" ""

gdb_test "cont" "Break.* marker1 \\(\\) at .*:$decimal.*" \

    continue to marker1"

gdb_test "up" "more_code.*" "up from marker1"

gdb_test "print *pUC" " = 21 \'.025\'.*" "print value of *pUC"

gdb_test "ptype pUC" "type = unsigned char \\*" "ptype pUC"

gdb_test "print *pS" " = -14" "print value of *pS"

gdb_test_multiple "ptype pS" "ptype pS" {

    -re "type = short \\*.*$gdb_prompt $"  { pass "ptype pS" }

    -re "type = short int \\*.*$gdb_prompt $"  { pass "ptype pS" }

}

gdb_test "print *pUS" " = 7" "print value of *pUS"

gdb_test_multiple "ptype pUS" "ptype pUS" {

    -re "type = unsigned short \\*.*$gdb_prompt $"  { pass "ptype pUS" }

    -re "type = short unsigned int \\*.*$gdb_prompt $"  { pass "ptype pUS" }

}

gdb_test "print *pI" " = 102" "print value of *pI"

gdb_test "ptype pI" "type = int \\*" "ptype pI"

gdb_test "print *pUI" " = 1002" "print value of *pUI"

gdb_test "ptype pUI" "type = unsigned int \\*" "ptype pUI"

gdb_test "print *pL" " = -234" "print value of *pL"

gdb_test_multiple "ptype pL" "ptype pL" {

    -re "type = long \\*.*$gdb_prompt $" { pass "ptype pL" }

    -re "type = long int \\*.*$gdb_prompt $" { pass "ptype pL" }

}

gdb_test "print *pUL" " = 234" "print value of *pUL"

gdb_test_multiple "ptype pUL" "ptype pUL" {

    -re "type = unsigned long \\*.*$gdb_prompt $"  { pass "ptype pUL" }

    -re "type = long unsigned int \\*.*$gdb_prompt $"  { pass "ptype pUL" }

}

gdb_test "print *pF" " = 1.2\[0-9\]*e\\+0?10" "print value of *pF"

gdb_test "ptype pF" "type = float \\*" "ptype pF"

gdb_test "print *pD" " = -1.2\[0-9\]*e\\-0?37" "print value of *pD"

gdb_test "ptype pD" "type = double \\*" "ptype pD"

gdb_test "print ******ppppppC" " = 65 \'A\'" \

    "print value of ******ppppppC"

gdb_test "ptype pC" "type = char \\*" "ptype pC"

gdb_test "ptype ppC" "type = char \\*\\*" "ptype ppC"

gdb_test "ptype pppC" "type = char \\*\\*\\*" "ptype pppC"

gdb_test "ptype ppppC" "type = char \\*\\*\\*\\*" "ptype ppppC"

gdb_test "ptype pppppC" "type = char \\*\\*\\*\\*\\*" "ptype pppppC"

gdb_test "ptype ppppppC" "type = char \\*\\*\\*\\*\\*\\*" "ptype ppppppC"

# Regression test for a crash.

gdb_test "p instance.array_variable + 0" \

  " = \\(long (int )?\\*\\) 0x\[0-9a-f\]*"