Initial creation of sourceware repository
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Stan Shebs
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358
gdb/testsuite/gdb.base/pointers.exp
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358
gdb/testsuite/gdb.base/pointers.exp
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# Copyright (C) 1998 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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# Please email any bugs, comments, and/or additions to this file to:
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# bug-gdb@prep.ai.mit.edu
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# This file was written by Elena Zannoni (ezannoni@cygnus.com)
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# This file is part of the gdb testsuite
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#
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# tests for pointer arithmetic and pointer dereferencing
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# with integer type variables and pointers to integers
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#
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if $tracelevel then {
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strace $tracelevel
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}
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#
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# test running programs
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#
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set prms_id 0
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set bug_id 0
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set testfile "pointers"
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set srcfile ${testfile}.c
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set binfile ${objdir}/${subdir}/${testfile}
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if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug additional_flags=-w}] != "" } {
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gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
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}
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gdb_exit
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gdb_start
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gdb_reinitialize_dir $srcdir/$subdir
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gdb_load ${binfile}
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#
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# set it up at a breakpoint so we can play with the variable values
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#
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if ![runto_main] then {
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perror "couldn't run to breakpoint"
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continue
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}
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gdb_test "next" "return 0;" "continuing after dummy()"
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#
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# let's see if gdb catches some illegal operations on pointers
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#
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# I must comment these out because strict type checking is not
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# supported in this version of GDB. I do not really know
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# what the expected gdb reply is.
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#
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#send_gdb "print v_int_pointer2 = &v_int_pointer\n"
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#gdb_expect {
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# -re ".*.*$gdb_prompt $" {
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# pass "illegal pointer assignment rejected"
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# }
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# -re ".*$gdb_prompt $" { fail "illegal pointer assignment rejected" }
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# timeout { fail "(timeout) illegal pointer assignment rejected" }
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# }
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#send_gdb "print v_unsigned_int_pointer = &v_int\n"
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#gdb_expect {
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# -re ".*.*$gdb_prompt $" {
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# pass "illegal pointer assignment rejected"
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# }
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# -re ".*$gdb_prompt $" { fail "illegal pointer assignment rejected" }
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# timeout { fail "(timeout) ilegal pointer assignment rejected" }
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# }
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#send_gdb "print v_unsigned_int_pointer == v_double_pointer\n"
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#gdb_expect {
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# -re ".*.*$gdb_prompt $" {
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# pass "illegal pointer operation (+) rejected"
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# }
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# -re ".*$gdb_prompt $" { fail "illegal pointer operation (+) rejected" }
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# timeout { fail "(timeout) illegal pointer operation (+) rejected" }
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# }
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#send_gdb "print v_unsigned_int_pointer * v_double_pointer\n"
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#gdb_expect {
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# -re ".*Argument to arithmetic operation not a number or boolean.*$gdb_prompt $" {
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# pass "illegal pointer operation (*) rejected"
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# }
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# -re ".*$gdb_prompt $" { fail "illegal pointer operation (*) rejected" }
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# timeout { fail "(timeout) illegal pointer operation (*) rejected" }
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# }
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#send_gdb "print v_unsigned_int_pointer = v_double_pointer\n"
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#gdb_expect {
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# -re ".*.*$gdb_prompt $" {
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# pass "ilegal pointer assignment rejected"
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# }
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# -re ".*$gdb_prompt $" { fail "illegal pointer assignment rejected" }
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# timeout { fail "(timeout) illegal pointer assignment rejected" }
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# }
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#send_gdb "print v_unsigned_int_pointer = v_unsigned_int\n"
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#gdb_expect {
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# -re ".*.*$gdb_prompt $" {
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# pass "illegal pointer assignment rejected"
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# }
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# -re ".*$gdb_prompt $" { fail "illegal pointer assignment rejected" }
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# timeout { fail "(timeout) illegal pointer assignment rejected" }
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# }
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gdb_test "set variable v_int_pointer=&v_int_array\[0\]" "" "set pointer to beginning of array"
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gdb_test "set variable v_int_pointer2=&v_int_array\[1\]" "" "set pointer to end of array"
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send_gdb "print *v_int_pointer\n"
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gdb_expect {
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-re ".*= 6.*$gdb_prompt $" {
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pass "print object pointed to"
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}
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-re ".*$gdb_prompt $" { fail "print object pointed to" }
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timeout { fail "(timeout) print object pointed to" }
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}
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send_gdb "print *v_int_pointer2\n"
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gdb_expect {
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-re ".*= 18.*$gdb_prompt $" {
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pass "print object pointed to"
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}
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-re ".*$gdb_prompt $" { fail "print object pointed to" }
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timeout { fail "(timeout) print object pointed to" }
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}
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send_gdb "print v_int_pointer == v_int_pointer2\n"
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gdb_expect {
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-re ".*= 0.*$gdb_prompt $" {
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pass "pointer1==pointer2"
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}
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-re ".*$gdb_prompt $" { fail "pointer1==pointer2" }
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timeout { fail "(timeout) pointer1==pointer2" }
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}
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send_gdb "print v_int_pointer != v_int_pointer2\n"
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gdb_expect {
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-re ".*= 1.*$gdb_prompt $" {
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pass "pointer1!=pointer2"
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}
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-re ".*$gdb_prompt $" { fail "pointer1!=pointer2" }
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timeout { fail "(timeout) pointer1!=pointer2" }
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}
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send_gdb "print v_int_pointer <= v_int_pointer2\n"
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gdb_expect {
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-re ".*= 1.*$gdb_prompt $" {
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pass "pointer1<=pointer2"
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}
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-re ".*$gdb_prompt $" { fail "pointer1<=pointer2" }
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timeout { fail "(timeout) pointer1<=pointer2" }
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}
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send_gdb "print v_int_pointer >= v_int_pointer2\n"
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gdb_expect {
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-re ".*= 0.*$gdb_prompt $" {
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pass "pointer1>=pointer2"
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}
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-re ".*$gdb_prompt $" { fail "pointer1>=pointer2" }
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timeout { fail "(timeout) pointer1>=pointer2" }
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}
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send_gdb "print v_int_pointer < v_int_pointer2\n"
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gdb_expect {
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-re ".*= 1.*$gdb_prompt $" {
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pass "pointer1<pointer2"
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}
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-re ".*$gdb_prompt $" { fail "pointer1<pointer2" }
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timeout { fail "(timeout) pointer1<pointer2" }
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}
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send_gdb "print v_int_pointer > v_int_pointer2\n"
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gdb_expect {
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-re ".*= 0.*$gdb_prompt $" {
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pass "pointer1>pointer2"
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}
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-re ".*$gdb_prompt $" { fail "pointer1>pointer2" }
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timeout { fail "(timeout) pointer1>pointer2" }
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}
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gdb_test "set variable y = *v_int_pointer++" "" "set y = *v_int_pointer++"
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send_gdb "print y\n"
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gdb_expect {
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-re ".*= 6.*$gdb_prompt $" {
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send_gdb "print *v_int_pointer\n"
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gdb_expect {
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-re ".*= 18.*$gdb_prompt $" {
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pass "pointer assignment and increment"
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}
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-re ".*$gdb_prompt $" { fail "pointer assignment and increment" }
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timeout { fail "(timeout) pointer assignment and increment" }
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}
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}
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-re ".*$gdb_prompt $" { fail "pointer assignment and increment" }
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timeout { fail "(timeout) pointer assignment and increment" }
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}
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gdb_test "set variable y = *--v_int_pointer2" "" "set y = *--v_int_pointer2"
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send_gdb "print y\n"
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gdb_expect {
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-re ".*= 6.*$gdb_prompt $" {
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send_gdb "print *v_int_pointer2\n"
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gdb_expect {
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-re ".*= 6.*$gdb_prompt $" {
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pass "pointer decrement and assignment"
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}
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-re ".*$gdb_prompt $" { fail "pointer decrement and assignment" }
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timeout { fail "(timeout) pointer decrement and assignment" }
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}
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}
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-re ".*$gdb_prompt $" { fail "pointer decrement and assignment" }
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timeout { fail "(timeout) pointer decrement and assignment" }
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}
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gdb_test "set variable y =v_int_pointer-v_int_pointer2" "" "set y =v_int_pointer-v_int_pointer2"
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send_gdb "print y\n"
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gdb_expect {
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-re ".*= 1.*$gdb_prompt $" {
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pass "pointer1-pointer2"
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}
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-re ".*$gdb_prompt $" { fail "pointer1-pointer2" }
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timeout { fail "(timeout) pointer1-pointer2" }
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}
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gdb_test "set variable v_int_pointer=v_int_array" "" "set v_int_pointer=v_int_array"
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send_gdb "print *v_int_pointer\n"
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gdb_expect {
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-re ".*= 6.*$gdb_prompt $" {
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pass "print array element through pointer"
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}
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-re ".*$gdb_prompt $" { fail "print array element through pointer" }
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timeout { fail "(timeout) print array element through pointer" }
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}
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send_gdb "print *(v_int_pointer+1)\n"
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gdb_expect {
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-re ".*= 18.*$gdb_prompt $" {
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pass "print array element through pointer"
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}
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-re ".*$gdb_prompt $" { fail "print array element through pointer" }
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timeout { fail "(timeout) print array element through pointer" }
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}
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# test print elements of array through pointers
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send_gdb "print (*rptr)\[0\]\n"
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gdb_expect {
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-re ".*= 0.*$gdb_prompt $" {
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pass "print array element through pointer"
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}
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-re ".*$gdb_prompt $" { fail "print array element through pointer" }
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timeout { fail "(timeout) print array element through pointer" }
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}
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send_gdb "print (*rptr)\[1\]\n"
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gdb_expect {
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-re ".*= 1.*$gdb_prompt $" {
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pass "print array element through pointer"
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}
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-re ".*$gdb_prompt $" { fail "print array element through pointer" }
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timeout { fail "(timeout) print array element through pointer" }
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}
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send_gdb "print (*rptr)\[2\]\n"
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gdb_expect {
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-re ".*= 2.*$gdb_prompt $" {
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pass "print array element through pointer"
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}
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-re ".*$gdb_prompt $" { fail "print array element through pointer" }
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timeout { fail "(timeout) print array element through pointer" }
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}
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gdb_test "set variable rptr = rptr+1" "" "increment rptr"
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send_gdb "print (*rptr)\[0\]\n"
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gdb_expect {
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-re ".*= 3.*$gdb_prompt $" {
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pass "print array element through pointer"
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}
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-re ".*$gdb_prompt $" { fail "print array element through pointer" }
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timeout { fail "(timeout) print array element through pointer" }
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}
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send_gdb "print (*rptr)\[1\]\n"
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gdb_expect {
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-re ".*= 4.*$gdb_prompt $" {
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pass "print array element through pointer"
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}
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-re ".*$gdb_prompt $" { fail "print array element through pointer" }
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timeout { fail "(timeout) print array element through pointer" }
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}
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send_gdb "print (*rptr)\[2\]\n"
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gdb_expect {
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-re ".*= 5.*$gdb_prompt $" {
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pass "print array element through pointer"
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}
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-re ".*$gdb_prompt $" { fail "print array element through pointer" }
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timeout { fail "(timeout) print array element through pointer" }
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}
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send_gdb "print *( *(matrix+1) +2)\n"
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gdb_expect {
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-re ".*= 5.*$gdb_prompt $" {
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pass "print array element w/ pointer arithmetic"
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}
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-re ".*$gdb_prompt $" { fail "print array element w/ pointer arithemtic" }
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timeout { fail "(timeout) print array element w/ pointer arithmetic" }
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}
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send_gdb "print **ptr_to_ptr_to_float\n"
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gdb_expect {
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-re ".*= 100.*$gdb_prompt $" {
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pass "print through ptr to ptr"
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}
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-re ".*$gdb_prompt $" { fail "print through ptr to ptr" }
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timeout { fail "(timeout) print through ptr to ptr" }
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}
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