# Copyright 1998-2013 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
#
#
# 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] {
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 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\[0-9a-f\]* "