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280 lines
8.3 KiB
Plaintext
280 lines
8.3 KiB
Plaintext
# Copyright 1998-2015 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 3 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, see <http://www.gnu.org/licenses/>.
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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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#
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# test running programs
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#
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standard_testfile .c
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if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug nowarnings}] != "" } {
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untested pointers.exp
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return -1
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}
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if [get_compiler_info] {
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return -1
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}
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clean_restart ${binfile}
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#
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# set it up at a breakpoint so we can play with the variable values
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#
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if ![runto_main] then {
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perror "couldn't run to breakpoint"
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continue
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}
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gdb_test "next " "more_code.*;" "continuing after dummy()"
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#
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# let's see if gdb catches some illegal operations on pointers
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#
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# I must comment these out because strict type checking is not
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# supported in this version of GDB. I do not really know
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# what the expected gdb reply is.
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#
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#send_gdb "print v_int_pointer2 = &v_int_pointer\n"
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#gdb_expect {
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# -re ".*.*$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_no_output "set variable v_int_pointer=&v_int_array\[0\]" \
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"set pointer to beginning of array"
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gdb_test_no_output "set variable v_int_pointer2=&v_int_array\[1\]" \
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"set pointer to end of array"
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gdb_test "print *v_int_pointer" " = 6" "print object pointed to"
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gdb_test "print *v_int_pointer2" " = 18" "print object pointed to \#2"
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gdb_test "print v_int_pointer == v_int_pointer2" " = $false" \
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"pointer1==pointer2"
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gdb_test "print v_int_pointer != v_int_pointer2" " = $true" \
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"pointer1!=pointer2"
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gdb_test "print v_int_pointer <= v_int_pointer2" " = $true" \
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"pointer1<=pointer2"
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gdb_test "print v_int_pointer >= v_int_pointer2" " = $false" \
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"pointer1>=pointer2"
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gdb_test "print v_int_pointer < v_int_pointer2" " = $true" \
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"pointer1<pointer2"
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gdb_test "print v_int_pointer > v_int_pointer2" " = $false" \
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"pointer1>pointer2"
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gdb_test_no_output "set variable y = *v_int_pointer++" \
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"set y = *v_int_pointer++"
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gdb_test "print y" " = 6" "pointer assignment"
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gdb_test "print *v_int_pointer" " = 18" "and post-increment"
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gdb_test_no_output "set variable y = *--v_int_pointer2" \
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"set y = *--v_int_pointer2"
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gdb_test "print y" " = 6" "pointer assignment"
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gdb_test "print *v_int_pointer2" " = 6" "and pre-decrement"
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gdb_test_no_output "set variable y =v_int_pointer-v_int_pointer2" \
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"set y =v_int_pointer-v_int_pointer2"
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gdb_test "print y" " = 1" "pointer1-pointer2"
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gdb_test_no_output "set variable v_int_pointer=v_int_array" \
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"set v_int_pointer=v_int_array"
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gdb_test "print *v_int_pointer" " = 6" \
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"print array element through pointer"
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gdb_test "print *(v_int_pointer+1)" " = 18" \
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"print array element through pointer \#2"
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# test print elements of array through pointers
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gdb_test "print (*rptr)\[0\]" " = 0" \
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"print array element through pointer \#3"
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gdb_test "print (*rptr)\[1\]" " = 1" \
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"print array element through pointer \#4"
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gdb_test "print (*rptr)\[2\]" " = 2" \
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"print array element through pointer \#5"
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gdb_test_no_output "set variable rptr = rptr+1" "increment rptr"
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gdb_test "print (*rptr)\[0\]" " = 3" \
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"print array element through pointer \#6"
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gdb_test "print (*rptr)\[1\]" " = 4" \
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"print array element through pointer \#7"
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gdb_test "print (*rptr)\[2\]" " = 5" \
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"print array element through pointer \#8"
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gdb_test "print *( *(matrix+1) +2)" " = 5" \
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"print array element w/ pointer arithmetic"
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gdb_test "print **ptr_to_ptr_to_float" " = 100" \
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"print through ptr to ptr"
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# tests for pointers
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# with elementary type variables and pointers.
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#
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gdb_test "break marker1" ".*" ""
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gdb_test "cont" "Break.* marker1 \\(\\) at .*:$decimal.*" \
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continue to marker1"
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gdb_test "up" "more_code.*" "up from marker1"
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gdb_test "print *pUC" " = 21 \'.025\'.*" "print value of *pUC"
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gdb_test "ptype pUC" "type = unsigned char \\*" "ptype pUC"
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gdb_test "print *pS" " = -14" "print value of *pS"
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gdb_test_multiple "ptype pS" "ptype pS" {
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-re "type = short \\*.*$gdb_prompt $" { pass "ptype pS" }
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-re "type = short int \\*.*$gdb_prompt $" { pass "ptype pS" }
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}
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gdb_test "print *pUS" " = 7" "print value of *pUS"
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gdb_test_multiple "ptype pUS" "ptype pUS" {
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-re "type = unsigned short \\*.*$gdb_prompt $" { pass "ptype pUS" }
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-re "type = short unsigned int \\*.*$gdb_prompt $" { pass "ptype pUS" }
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}
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gdb_test "print *pI" " = 102" "print value of *pI"
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gdb_test "ptype pI" "type = int \\*" "ptype pI"
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gdb_test "print *pUI" " = 1002" "print value of *pUI"
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gdb_test "ptype pUI" "type = unsigned int \\*" "ptype pUI"
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gdb_test "print *pL" " = -234" "print value of *pL"
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gdb_test_multiple "ptype pL" "ptype pL" {
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-re "type = long \\*.*$gdb_prompt $" { pass "ptype pL" }
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-re "type = long int \\*.*$gdb_prompt $" { pass "ptype pL" }
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}
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gdb_test "print *pUL" " = 234" "print value of *pUL"
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gdb_test_multiple "ptype pUL" "ptype pUL" {
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-re "type = unsigned long \\*.*$gdb_prompt $" { pass "ptype pUL" }
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-re "type = long unsigned int \\*.*$gdb_prompt $" { pass "ptype pUL" }
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}
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gdb_test "print *pF" " = 1.2\[0-9\]*e\\+0?10" "print value of *pF"
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gdb_test "ptype pF" "type = float \\*" "ptype pF"
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gdb_test "print *pD" " = -1.2\[0-9\]*e\\-0?37" "print value of *pD"
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gdb_test "ptype pD" "type = double \\*" "ptype pD"
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gdb_test "print ******ppppppC" " = 65 \'A\'" \
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"print value of ******ppppppC"
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gdb_test "ptype pC" "type = char \\*" "ptype pC"
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gdb_test "ptype ppC" "type = char \\*\\*" "ptype ppC"
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gdb_test "ptype pppC" "type = char \\*\\*\\*" "ptype pppC"
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gdb_test "ptype ppppC" "type = char \\*\\*\\*\\*" "ptype ppppC"
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gdb_test "ptype pppppC" "type = char \\*\\*\\*\\*\\*" "ptype pppppC"
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gdb_test "ptype ppppppC" "type = char \\*\\*\\*\\*\\*\\*" "ptype ppppppC"
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# Regression test for a crash.
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gdb_test "p instance.array_variable + 0" \
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" = \\(long (int )?\\*\\) 0x\[0-9a-f\]* <instance>"
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