486 lines
18 KiB
Text
486 lines
18 KiB
Text
# Copyright 2001 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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# Test GDB's character set support.
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if $tracelevel then {
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strace $tracelevel
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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 "charset"
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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}] != "" } {
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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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# Start with a fresh gdb.
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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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# Parse the output from a `show charset' command. Return the host
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# and target charset as a two-element list.
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proc parse_show_charset_output {testname} {
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global gdb_prompt
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gdb_expect {
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-re "The current host and target character set is `(.*)'\\.\[\r\n\]+$gdb_prompt $" {
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set host_charset $expect_out(1,string)
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set target_charset $expect_out(1,string)
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pass $testname
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}
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-re "The current host character set is `(.*)'\\.\[\r\n\]+The current target character set is `(.*)'\\.\[\r\n\]+$gdb_prompt $" {
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set host_charset $expect_out(1,string)
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set target_charset $expect_out(2,string)
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pass $testname
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}
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-re ".*$gdb_prompt $" {
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fail $testname
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}
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timeout {
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fail "$testname (timeout)"
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}
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}
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return [list $host_charset $target_charset]
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}
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# Try the various `show charset' commands. These are all aliases of each
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# other; `show target-charset' and `show host-charset' actually print
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# both the host and target charsets.
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send_gdb "show charset\n"
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set show_charset [parse_show_charset_output "show charset"]
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send_gdb "show target-charset\n"
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set show_target_charset [parse_show_charset_output "show target-charset"]
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if {! [string compare $show_charset $show_target_charset]} {
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pass "check `show target-charset' against `show charset'"
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} else {
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fail "check `show target-charset' against `show charset'"
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}
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send_gdb "show host-charset\n"
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set show_host_charset [parse_show_charset_output "show host-charset"]
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if {! [string compare $show_charset $show_host_charset]} {
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pass "check `show host-charset' against `show charset'"
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} else {
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fail "check `show host-charset' against `show charset'"
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}
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# Get the list of supported charsets.
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send_gdb "set charset\n"
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# True iff we've seen the "Valid character sets are:" message.
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set seen_valid 0
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# True iff we've seen the "can be used as a host character set" message.
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set seen_can_host 0
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# A Tcl array mapping the names of all the character sets we've seen
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# to "1" if the character set can be used as a host character set, or
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# "0" otherwise. We can use `array names charsets' just to get a list
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# of all character sets.
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array set charsets {}
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proc all_charset_names {} {
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global charsets
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return [array names charsets]
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}
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proc charset_exists {charset} {
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global charsets
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return [info exists charsets($charset)]
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}
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proc valid_host_charset {charset} {
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global charsets
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return $charsets($charset)
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}
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gdb_expect {
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-re "Valid character sets are:\[\r\n\]+" {
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# There's no ^ at the beginning of the pattern above, so that
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# expect can skip the echoed `set charset' command.
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set seen_valid 1
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exp_continue
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}
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-re "^ (\[^ \t\n\]*) \\*\[\r\n\]+" {
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set charsets($expect_out(1,string)) 1
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exp_continue
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}
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-re "^ (\[^ \t\n\]*)\[ \t\]*\[\r\n\]+" {
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set charsets($expect_out(1,string)) 0
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exp_continue
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}
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-re "^\\* - can be used as a host character set\[\r\n\]+" {
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set seen_can_host 1
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exp_continue
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}
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-re ".*${gdb_prompt} $" {
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# We don't do an exp_continue here.
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}
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timeout {
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fail "get valid character sets (timeout)"
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}
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}
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# Check that we've seen all the right pieces of the output, and that
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# we can at least use ASCII as a host character set.
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if {$seen_valid && $seen_can_host && [charset_exists ascii]} {
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# We can't do the below as part of the test above, since all the
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# [] substitution takes place before any expression evaluation
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# takes place; && doesn't really short circuit things the way
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# you'd like. We'd get an "can't read $charsets(ascii)" error
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# even when `info exists' had returned zero.
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if {[valid_host_charset ascii]} {
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pass "get valid character sets"
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} else {
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fail "get valid character sets"
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}
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} else {
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fail "get valid character sets (no ascii charset)"
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}
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# Try using `set host-charset' on an invalid character set.
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gdb_test "set host-charset my_grandma_bonnie" \
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"GDB doesn't know of any character set named `my_grandma_bonnie'." \
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"try `set host-charset' with invalid charset"
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# Try using `set target-charset' on an invalid character set.
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gdb_test "set target-charset my_grandma_bonnie" \
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"GDB doesn't know of any character set named `my_grandma_bonnie'." \
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"try `set target-charset' with invalid charset"
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# Make sure that GDB supports every host/target charset combination.
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foreach host_charset [all_charset_names] {
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if {[valid_host_charset $host_charset]} {
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set testname "try `set host-charset $host_charset'"
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send_gdb "set host-charset $host_charset\n"
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gdb_expect {
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-re "GDB doesn't know of any character set named.*\[\r\n]+${gdb_prompt} $" {
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# How did it get into `charsets' then?
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fail "$testname (didn't recognize name)"
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}
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-re "GDB can't use `.*' as its host character set\\.\[\r\n]+${gdb_prompt} $" {
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# Well, then why does its `charsets' entry say it can?
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fail $testname
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}
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-re "${gdb_prompt} $" {
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pass $testname
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}
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timeout {
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fail "$testname (timeout)"
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}
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}
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# Check that the command actually had its intended effect:
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# $host_charset should now be the host character set.
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send_gdb "show charset\n"
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set result [parse_show_charset_output "parse `show charset' after `set host-charset $host_charset'"]
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if {! [string compare [lindex $result 0] $host_charset]} {
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pass "check effect of `set host-charset $host_charset'"
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} else {
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fail "check effect of `set host-charset $host_charset'"
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}
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# Now try setting every possible target character set,
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# given that host charset.
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foreach target_charset [all_charset_names] {
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set testname "try `set target-charset $target_charset'"
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send_gdb "set target-charset $target_charset\n"
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gdb_expect {
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-re "GDB doesn't know of any character set named.*\[\r\n]+${gdb_prompt} $" {
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fail "$testname (didn't recognize name)"
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}
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-re "GDB can't convert from the .* character set to .*\\.\[\r\n\]+${gdb_prompt} $" {
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# This is a serious problem. GDB should be able to convert
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# between any arbitrary pair of character sets.
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fail "$testname (can't convert)"
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}
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-re "${gdb_prompt} $" {
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pass $testname
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}
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timeout {
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fail "$testname (timeout)"
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}
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}
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# Check that the command actually had its intended effect:
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# $target_charset should now be the target charset.
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send_gdb "show charset\n"
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set result [parse_show_charset_output "parse `show charset' after `set target-charset $target_charset'"]
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if {! [string compare $result [list $host_charset $target_charset]]} {
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pass "check effect of `set target-charset $target_charset'"
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} else {
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fail "check effect of `set target-charset $target_charset'"
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}
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# Test handling of characters in the host charset which
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# can't be translated into the target charset. \xA2 is
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# `cent' in ISO-8859-1, which has no equivalent in ASCII.
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#
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# On some systems, the pseudo-tty through which we
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# communicate with GDB insists on stripping the high bit
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# from input characters, meaning that `cent' turns into
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# `"'. Since ISO-8859-1 and ASCII are identical in the
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# lower 128 characters, it's tough to see how we can test
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# this behavior on such systems, so we just xfail it.
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#
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# Note: the \x16 (Control-V) is an escape to allow \xA2 to
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# get past readline.
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if {! [string compare $host_charset iso-8859-1] && ! [string compare $target_charset ascii]} {
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set testname "untranslatable character in character literal"
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send_gdb "print '\x16\xA2'\n"
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gdb_expect {
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-re "There is no character corresponding to .* in the target character set .*\\.\[\r\n\]+$gdb_prompt $" {
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pass $testname
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}
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-re " = 34 '\"'\[\r\n\]+$gdb_prompt $" {
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xfail "$testname (DejaGNU's pseudo-tty strips eighth bit)"
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}
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-re "$gdb_prompt $" {
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fail $testname
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}
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timeout {
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fail "$testname (timeout)"
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}
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}
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set testname "untranslatable character in string literal"
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# If the PTTY zeros bit seven, then this turns into
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# print """
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# which gets us a syntax error. We don't care.
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send_gdb "print \"\x16\xA2\"\n"
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gdb_expect {
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-re "There is no character corresponding to .* in the target character set .*\\.\[\r\n\]+$gdb_prompt $" {
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pass $testname
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}
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-re "Unterminated string in expression.\[\r\n\]+$gdb_prompt $" {
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xfail "$testname (DejaGNU's pseudo-tty strips eighth bit)"
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}
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-re "$gdb_prompt $" {
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fail $testname
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}
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timeout {
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fail "$testname (timeout)"
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}
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}
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set testname "untranslatable characters in backslash escape"
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send_gdb "print '\\\x16\xA2'\n"
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gdb_expect {
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-re "The escape sequence .* is equivalent to plain .*, which has no equivalent\[\r\n\]+in the .* character set\\.\[\r\n\]+$gdb_prompt $" {
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pass $testname
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}
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-re " = 34 '\"'\[\r\n\]+$gdb_prompt $" {
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xfail "$testname (DejaGNU's pseudo-tty strips eighth bit)"
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}
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-re "$gdb_prompt $" {
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fail $testname
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}
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timeout {
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fail "$testname (timeout)"
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}
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}
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}
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}
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}
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}
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# Set the host character set to plain ASCII, and try actually printing
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# some strings in various target character sets. We need to run the
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# test program to the point at which the strings have been
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# initialized.
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gdb_test "break [gdb_get_line_number "all strings initialized"]" \
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".*Breakpoint.* at .*" \
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"set breakpoint after all strings have been initialized"
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gdb_run_cmd
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gdb_expect {
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-re "Breakpoint.*all strings initialized.*$gdb_prompt $" {
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pass "run until all strings have been initialized"
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}
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-re "$gdb_prompt $" {
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fail "run until all strings have been initialized"
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}
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timeout {
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fail "run until all strings have been initialized (timeout)"
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}
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}
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gdb_test "set host-charset ascii" ""
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foreach target_charset [all_charset_names] {
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send_gdb "set target-charset $target_charset\n"
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gdb_expect {
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-re "$gdb_prompt $" {
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pass "set target-charset $target_charset"
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}
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timeout {
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fail "set target-charset $target_charset (timeout)"
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}
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}
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# Try printing the null character. There seems to be a bug in
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# gdb_test that requires us to use gdb_expect here.
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send_gdb "print '\\0'\n"
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gdb_expect {
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-re "\\\$${decimal} = 0 '\\\\0'\[\r\n\]+$gdb_prompt $" {
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pass "print the null character in ${target_charset}"
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}
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-re "$gdb_prompt $" {
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fail "print the null character in ${target_charset}"
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}
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timeout {
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fail "print the null character in ${target_charset} (timeout)"
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}
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}
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# Compute the name of the variable in the test program that holds
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# a string in $target_charset. The variable's name is the
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# character set's name, in lower-case, with all non-identifier
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# characters replaced with '_', with "_string" stuck on the end.
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set var_name [string tolower "${target_charset}_string"]
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regsub -all -- "\[^a-z0-9_\]" $var_name "_" var_name
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# Compute a regexp matching the results we expect. This is static,
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# but it's easier than writing it out.
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regsub -all "." "abefnrtv" "(\\\\&|x)" escapes
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set uppercase "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
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set lowercase "abcdefghijklmnopqrstuvwxyz"
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set digits "0123456789"
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set octal_escape "\\\\\[0-9\]\[0-9\]\[0-9\]"
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send_gdb "print $var_name\n"
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# ${escapes}${uppercase}${lowercase}${digits}${octal}${octal}
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gdb_expect {
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-re ".* = \"(\\\\a|x)(\\\\b|x)(\\\\e|x)(\\\\f|x)(\\\\n|x)(\\\\r|x)(\\\\t|x)(\\\\v|x)${uppercase}${lowercase}${digits}(\\\\\[0-9\]\[0-9\]\[0-9\]|x)(\\\\\[0-9\]\[0-9\]\[0-9\]|x).*\"\[\r\n\]+$gdb_prompt $" {
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pass "print string in $target_charset"
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}
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-re "$gdb_prompt $" {
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fail "print string in $target_charset"
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}
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timeout {
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fail "print string in $target_charset (timeout)"
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}
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}
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# Try entering a character literal, and see if it comes back unchanged.
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gdb_test "print 'A'" \
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" = \[0-9-\]+ 'A'" \
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"parse character literal in ${target_charset}"
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# Check that the character literal was encoded correctly.
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gdb_test "print 'A' == $var_name\[8\]" \
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" = 1" \
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"check value of parsed character literal in ${target_charset}"
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# Try entering a string literal, and see if it comes back unchanged.
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gdb_test "print \"abcdefABCDEF012345\"" \
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" = \"abcdefABCDEF012345\"" \
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"parse string literal in ${target_charset}"
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# Check that the string literal was encoded correctly.
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gdb_test "print \"q\"\[0\] == $var_name\[50\]" \
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" = 1" \
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"check value of parsed string literal in ${target_charset}"
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# Test handling of characters in the target charset which
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# can't be translated into the host charset.
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if {! [string compare $target_charset iso-8859-1]} {
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gdb_test "print iso_8859_1_string\[70\]" \
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" = \[0-9-\]+ '\\\\242'" \
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"print character with no equivalent in host character set"
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gdb_test "print iso_8859_1_string + 70" \
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" = ${hex} \"\\\\242.*\"" \
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"print string with no equivalent in host character set"
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}
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# Make sure that we don't apply the ISO-8859-1 `print_literally'
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# function to ASCII.
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if {! [string compare $target_charset ascii]} {
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gdb_test "print iso_8859_1_string\[70\]" \
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" = \[0-9-\]+ '\\\\242'" \
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"print ASCII unprintable character"
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gdb_test "print iso_8859_1_string + 70" \
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" = ${hex} \"\\\\242.*\"" \
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"print ASCII unprintable string"
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}
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# Try printing characters with backslash escape equivalents.
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set escapees {a b e f n r t v}
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for {set i 0} {$i < [llength $escapees]} {incr i} {
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set escape [lindex $escapees $i]
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send_gdb "print $var_name\[$i\]\n"
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set have_escape 1
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gdb_expect {
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-re "= \[0-9-\]+ '\\\\${escape}'\[\r\n\]+$gdb_prompt $" {
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pass "try printing '\\${escape}' in ${target_charset}"
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}
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-re "= \[0-9-\]+ 'x'\[\r\n\]+$gdb_prompt $" {
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xfail "try printing '\\${escape}' in ${target_charset} (no such escape)"
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set have_escape 0
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}
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-re "$gdb_prompt $" {
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fail "try printing '\\${escape}' in ${target_charset}"
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}
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timeout {
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fail "try printing '\\${escape}' in ${target_charset} (timeout)"
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}
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}
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if {$have_escape} {
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# Try parsing a backslash escape in a character literal.
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gdb_test "print '\\${escape}' == $var_name\[$i\]" \
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" = 1" \
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"check value of '\\${escape}' in ${target_charset}"
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# Try parsing a backslash escape in a string literal.
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gdb_test "print \"\\${escape}\"\[0\] == $var_name\[$i\]" \
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" = 1" \
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"check value of \"\\${escape}\" in ${target_charset}"
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}
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}
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# Try printing a character escape that doesn't exist. We should
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# get the unescaped character, in the target character set.
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gdb_test "print '\\q'" " = \[0-9-\]+ 'q'" \
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"print escape that doesn't exist in $target_charset"
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gdb_test "print '\\q' == $var_name\[50\]" " = 1" \
|
|
"check value of escape that doesn't exist in $target_charset"
|
|
}
|
|
|
|
gdb_exit
|