mirror of
https://sourceware.org/git/binutils-gdb.git
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08ec06d644
In this commit I propose that we add special handling for the '^' when
used at the start of a gdb_test pattern. Consider this usage:
gdb_test "some_command" "^command output pattern"
I think the intention here is pretty clear - run 'some_command', and
the output from the command should be exactly 'command output
pattern'.
After the previous commit which tightened up how gdb_test matches the
final newline and prompt we know that the only thing after the output
pattern will be a single newline and prompt, and the leading '^'
ensures that there's no output before 'command output pattern', so
this will do what I want, right?
... except it doesn't. The command itself will also needs to be
matched, so I should really write:
gdb_test "some_command" "^some_command\r\ncommand output pattern"
which will do what I want, right? Well, that's fine until I change
the command and include some regexp character, then I have to write:
gdb_test "some_command" \
"^[string_to_regexp some_command]\r\ncommand output pattern"
but this all gets a bit verbose, so in most cases I simply don't
bother anchoring the output with a '^', and a quick scan of the
testsuite would indicate that most other folk don't both either.
What I propose is this: the *only* thing that can appear immediately
after the '^' is the command converted into a regexp, so lets do that
automatically, moving the work into gdb_test. Thus, when I write:
gdb_test "some_command" "^command output pattern"
Inside gdb_test we will spot the leading '^' in the pattern, and
inject the regexp version of the command after the '^', followed by a
'\r\n'.
My hope is that given this new ability, folk will be more inclined to
anchor their output patterns when this makes sense to do so. This
should increase our ability to catch any unexpected output from GDB
that appears as a result of running a particular command.
There is one problem case we need to consider, sometime people do
this:
gdb_test "" "^expected output pattern"
In this case no command is sent to GDB, but we are still expecting
some output from GDB. This might be a result of some asynchronous
event for example. As there is no command sent to GDB (from the
gdb_test) there will be no command text to parse.
In this case my proposed new feature injects the command regexp, which
is the empty string (as the command itself is empty), but still
injects the '\r\n' after the command regexp, thus we end up with this
pattern:
^\r\nexpected output pattern
This extra '\r\n' is not what we should expected here, and so there is
a special case inside gdb_test -- if the command is empty then don't
add anything after the '^' character.
There are a bunch of tests that do already use '^' followed by the
command, and these can all be simplified in this commit.
I've tried to run all the tests that I can to check this commit, but I
am certain that there will be some tests that I manage to miss.
Apologies for any regressions this commit causes, hopefully fixing the
regressions will not be too hard.
Reviewed-By: Tom Tromey <tom@tromey.com>
563 lines
18 KiB
Text
563 lines
18 KiB
Text
# Copyright (C) 2008-2023 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 is part of the GDB testsuite. It tests the mechanism
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# exposing values to Python.
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load_lib gdb-python.exp
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standard_testfile python.c python-1.c
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if {[build_executable $testfile.exp $testfile \
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[list $srcfile $srcfile2] debug] == -1} {
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return -1
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}
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clean_restart
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set remote_source2_py [gdb_remote_download host \
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${srcdir}/${subdir}/source2.py]
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# Do this instead of the skip_python_check.
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# We want to do some tests when Python is not present.
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gdb_test_multiple "python print (23)" "verify python support" {
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-re "not supported.*$gdb_prompt $" {
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unsupported "python support is disabled"
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# If Python is not supported, verify that sourcing a python script
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# causes an error.
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gdb_test "source $remote_source2_py" \
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"Error in sourced command file:.*" \
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"source source2.py when python disabled"
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# Verify multi-line python commands cause an error.
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gdb_test_multiline "multi-line python command" \
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"python" "" \
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"print (23)" "" \
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"end" "not supported.*"
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return -1
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}
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-re "$gdb_prompt $" {}
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}
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gdb_test_multiline "multi-line python command" \
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"python" "" \
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"print (23)" "" \
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"end" "23"
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# Spawn interactive Python help from a multi-line command, thus, after
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# a secondary prompt.
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with_test_prefix "python interactive help" {
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set test "python; help(); end"
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gdb_test_multiple "python\nhelp()\nend" $test {
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-re ".*help utility.*help> $" {
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pass $test
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# The "quit" must be seen on the output. A buggy GDB
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# would not display it.
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gdb_test "quit" "^\r\nYou are now leaving help.*" "quit help"
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}
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}
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}
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gdb_test_multiline "show python command" \
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"define zzq" "Type commands for definition of .* just \"end\"\\.*" \
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"python" "" \
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"print (23)" "" \
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"end" "" \
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"end" "" \
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"show user zzq" "User command \"zzq\":.* python.*print \\(23\\).* end"
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gdb_test_multiline "indented multi-line python command" \
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"python" "" \
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"def foo ():" "" \
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" print ('hello, world!')" "" \
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"foo ()" "" \
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"end" "hello, world!"
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gdb_test "source $remote_source2_py" "yes" "source source2.py"
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gdb_test "source -s source2.py" "yes"
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set remote_source2_symlink_notpy \
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[gdb_remote_download host ${srcdir}/${subdir}/source2.py \
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[standard_output_file "source2-symlink.notpy"]]
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set remote_source2_symlink_py [standard_output_file "source2-symlink.py"]
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remote_file host delete $remote_source2_symlink_py
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set status [remote_exec host "ln -sf $remote_source2_symlink_notpy $remote_source2_symlink_py"]
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set test "source -s source2-symlink.py"
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if {[lindex $status 0] == 0} {
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gdb_test "source -s $remote_source2_symlink_py" "yes" $test
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} else {
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unsupported "$test (host does not support symbolic links)"
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}
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gdb_test "python print (gdb.current_objfile())" "None"
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gdb_test "python print (gdb.objfiles())" "\\\[\\\]"
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# Test http://bugs.python.org/issue4434 workaround in configure.ac
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gdb_test "python import itertools; print ('IMPOR'+'TED')" "IMPORTED" "pythonX.Y/lib-dynload/*.so"
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gdb_test_no_output \
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"python x = gdb.execute('printf \"%d\", 23', to_string = True)"
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gdb_test "python print (x)" "23"
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gdb_test "python gdb.execute('echo 2\\necho 3\\\\n\\n')" "23" \
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"multi-line execute"
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gdb_test " " "23" "gdb.execute does not affect repeat history"
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# Test post_event.
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gdb_test_multiline "post event insertion" \
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"python" "" \
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"someVal = 0" "" \
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"class Foo(object):" "" \
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" def __call__(self):" "" \
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" global someVal" "" \
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" someVal += 1" "" \
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"gdb.post_event(Foo())" "" \
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"end" ""
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gdb_test "python print (someVal)" "1" "test post event execution"
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gdb_test "python gdb.post_event(str(1))" "RuntimeError: Posted event is not callable.*" \
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"test non callable class"
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send_gdb "python gdb.post_event(lambda: invalid())\n"
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gdb_expect {
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-re "name 'invalid' is not defined" {
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pass "test post_event error on receipt"
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}
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default {
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fail "test post_event error on receipt"
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}
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}
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# Test (no) pagination of the executed command.
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gdb_test "show height" {Number of lines gdb thinks are in a page is unlimited\.}
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set lines 10
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gdb_test_no_output "set height $lines"
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set test "verify pagination beforehand"
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gdb_test_multiple "python print (\"\\n\" * $lines)" $test {
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-re "--Type <RET>" {
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exp_continue
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}
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-re " for more, q to quit" {
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exp_continue
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}
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-re ", c to continue without paging--$" {
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pass $test
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}
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}
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gdb_test "q" "Quit.*Error while executing Python.*" "verify pagination beforehand: q"
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gdb_test "python if gdb.execute('python print (\"\\\\n\" * $lines)', to_string=True) == \"\\n\" * [expr $lines + 1]: print (\"yes\")" "yes" "gdb.execute does not page"
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set test "verify pagination afterwards"
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gdb_test_multiple "python print (\"\\n\" * $lines)" $test {
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-re "--Type <RET>" {
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exp_continue
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}
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-re " for more, q to quit" {
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exp_continue
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}
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-re ", c to continue without paging--$" {
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pass $test
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}
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}
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gdb_test "q" "Quit.*Error while executing Python.*" "verify pagination afterwards: q"
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gdb_test_no_output "set height 0"
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gdb_test_no_output "python a = gdb.execute('help', to_string=True)" "collect help from uiout"
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gdb_test "python print (a)" ".*aliases -- User-defined aliases of other commands.*" "verify help to uiout"
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# Test PR 12212, using InfThread.selected_thread() when no inferior is
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# loaded.
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gdb_py_test_silent_cmd "python nothread = gdb.selected_thread()" "Attempt to aquire thread with no inferior" 1
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gdb_test "python print (nothread is None)" "True" "ensure that no threads are returned"
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gdb_test_multiline "register atexit function" \
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"python" "" \
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"import atexit" "" \
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"def printit(arg):" "" \
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" print (arg)" "" \
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"atexit.register(printit, 'good bye world')" "" \
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"end" ""
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send_gdb "quit\n"
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gdb_expect {
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-re "good bye world" {
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pass "atexit handling"
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}
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default {
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fail "atexit handling"
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}
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}
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# Start with a fresh gdb.
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clean_restart ${testfile}
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# The following tests require execution.
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if {![runto_main]} {
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return 0
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}
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set lineno [gdb_get_line_number "Break to end."]
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runto $lineno
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# Test gdb.decode_line.
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gdb_test "python gdb.decode_line(\"main.c:43\")" \
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"gdb.error: No source file named main.c.*" "test decode_line no source named main"
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with_test_prefix "test decode_line current location" {
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gdb_py_test_silent_cmd "python symtab = gdb.decode_line()" "decode current line" 1
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gdb_test "python print (len(symtab))" "2" "length of result"
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gdb_test "python print (symtab\[0\])" "None" "no unparsed text"
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gdb_test "python print (len(symtab\[1\]))" "1" "length of result locations"
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}
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# Test that decode_line with an empty string argument does not crash.
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gdb_py_test_silent_cmd "python symtab2 = gdb.decode_line('')" \
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"test decode_line with empty string" 1
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if { [is_remote host] } {
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set python_c [string_to_regexp "python.c"]
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} else {
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set python_c [string_to_regexp "gdb.python/python.c"]
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}
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with_test_prefix "test decode_line" {
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gdb_test "python print (symtab\[1\]\[0\].symtab)" ".*${python_c}" "current location filename"
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gdb_test "python print (symtab\[1\]\[0\].line)" "$lineno" "current location line number"
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gdb_py_test_silent_cmd "python symtab = gdb.decode_line(\"python.c:26 if foo\")" "python.c:26 decode" 1
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gdb_test "python print (len(symtab))" "2" "python.c:26 length 2"
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gdb_test "python print (symtab\[0\])" "if foo" "expression parse"
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gdb_test "python print (len(symtab\[1\]))" "1" "python.c:26 length 1"
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gdb_test "python print (symtab\[1\]\[0\].symtab)" ".*${python_c}" "python.c:26 filename"
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gdb_test "python print (symtab\[1\]\[0\].line)" "26" "python.c:26 line number"
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gdb_test "python gdb.decode_line(\"randomfunc\")" \
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"gdb.error: Function \"randomfunc\" not defined.*" "randomfunc"
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gdb_py_test_silent_cmd "python symtab = gdb.decode_line(\"func1\")" "func1()" 1
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gdb_test "python print (len(symtab))" "2" "func1 length 2"
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gdb_test "python print (len(symtab\[1\]))" "1" "func1 length 1"
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}
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if { [is_remote host] } {
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set python_1_c [string_to_regexp "python-1.c"]
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} else {
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set python_1_c [string_to_regexp "gdb.python/python-1.c"]
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}
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gdb_test "python print (symtab\[1\]\[0\].symtab)" ".*${python_1_c}" "test decode_line func1 filename"
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# Set a default value for func1_lineno in case we fail to fetch the line number
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# below.
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set func1_lineno "noline"
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# Fetch the line GDB thinks func1 starts at. This may change depending
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# on the architecture and on how GDB handles the prologue of the function.
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gdb_test_multiple "info line func1" "info line func1" {
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-re "Line ($decimal) of .* starts at address $hex <func1> and ends at $hex <func1\\+$decimal>\.\[\r\n\]+$gdb_prompt $" {
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# Fetch the line number.
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set func1_lineno $expect_out(1,string)
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}
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}
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gdb_test "python print (symtab\[1\]\[0\].line)" "$func1_lineno" "test decode_line func1 line number"
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gdb_py_test_silent_cmd {python symtab = gdb.decode_line ("func1,func2")} \
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"test decode_line func1,func2" 1
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gdb_test {python print (symtab[0])} ",func2" "stop at comma in linespec"
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with_test_prefix "test decode_line" {
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gdb_py_test_silent_cmd "python symtab = gdb.decode_line(\"*0\")" "*0" 1
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gdb_test "python print (len(symtab))" "2" "*0 result length"
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gdb_test "python print (symtab\[0\])" "None" "*0 unparsed"
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gdb_test "python print (len(symtab\[1\]))" "1" "*0 locations length"
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gdb_test "python print (symtab\[1\]\[0\].symtab)" "None" "*0 filename"
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gdb_test "python print (symtab\[1\]\[0\].pc)" "0" "*0 pc"
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}
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# gdb.write
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gdb_test "python print (sys.stderr)" ".*gdb._GdbFile (instance|object) at.*" "test stderr location"
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gdb_test "python print (sys.stdout)" ".*gdb._GdbFile (instance|object) at.*" "test stdout location"
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gdb_test "python gdb.write(\"Foo\\n\")" "Foo" "test default write"
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gdb_test "python gdb.write(\"Error stream\\n\", stream=gdb.STDERR)" "Error stream" "test stderr write"
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gdb_test "python gdb.write(\"Normal stream\\n\", stream=gdb.STDOUT)" "Normal stream" "test stdout write"
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if ![gdb_debug_enabled] {
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gdb_test "python gdb.write(\"Log stream\\n\", stream=gdb.STDLOG)" "Log stream" "test stdlog write"
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}
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# Turn on full stack printing for subsequent tests.
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gdb_py_test_silent_cmd "set python print-stack full" \
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"Set print-stack full for prompt tests" 1
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# Test prompt substituion
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gdb_test_multiline "prompt substitution" \
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"python" "" \
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"someCounter = 0" "" \
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"def prompt(current):" "" \
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" global someCounter" "" \
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" if (current == \"testfake \"):" "" \
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" return None" "" \
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" someCounter = someCounter + 1" "" \
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" return \"py prompt \" + str (someCounter) + \" \"" "" \
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"end" ""
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gdb_test_multiline "prompt substitution readline" \
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"python" "" \
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"pCounter = 0" "" \
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"def program_prompt(current):" "" \
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" global pCounter" "" \
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" if (current == \">\"):" "" \
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" pCounter = pCounter + 1" "" \
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" return \"python line \" + str (pCounter) + \": \"" "" \
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" return None" "" \
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"end" ""
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set newprompt "py prompt 1"
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set newprompt2 "py prompt 2"
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set testfake "testfake"
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gdb_test_multiple "python gdb.prompt_hook = prompt" "set the hook = prompt" {
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-re "\[\r\n\]$newprompt $" {
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pass $gdb_test_name
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}
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}
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gdb_test_multiple "set prompt testfake " "set testfake prompt in GDB" {
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-re "\[\r\n\]$testfake $" {
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pass $gdb_test_name
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}
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}
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gdb_test_multiple "show prompt" "show testfake prompt" {
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-re "Gdb's prompt is \"$testfake \"..* $" {
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pass $gdb_test_name
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}
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}
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gdb_test_multiple "set prompt blah " "set blah in GDB" {
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-re "\[\r\n\]$newprompt2 $" {
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pass $gdb_test_name
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}
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}
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gdb_test_multiple "python gdb.prompt_hook = None" "delete hook" {
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-re "\[\r\n\]$newprompt2 $" {
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pass $gdb_test_name
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}
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}
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gdb_test_multiple "set prompt $gdb_prompt " "set default prompt" {
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-re "\[\r\n\]$gdb_prompt $" {
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pass $gdb_test_name
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}
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}
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set working_dir ""
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gdb_test_multiple "pwd" "pwd" {
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-re "Working directory (.*)\\.\[\r\n\]+$gdb_prompt $" {
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set working_dir $expect_out(1,string)
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}
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}
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gdb_test_multiple "python gdb.prompt_hook = program_prompt" "set the programming hook" {
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-re "\[\r\n\]$gdb_prompt $" {
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pass $gdb_test_name
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}
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}
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gdb_test_multiple "python" "test we ignore substitution for seconday prompts" {
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-re "\r\n>$" {
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pass $gdb_test_name
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}
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}
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gdb_test_multiple "end" "end programming" {
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-re "\[\r\n\]$gdb_prompt $" {
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pass $gdb_test_name
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}
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}
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gdb_test_multiline "prompt substitution readline import" \
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"python" "" \
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"import gdb.command.prompt" "" \
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"end" ""
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gdb_test_multiple "set extended-prompt one two three " \
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"set basic extended prompt" {
|
|
-re "\[\r\n\]one two three $" {
|
|
pass $gdb_test_name
|
|
}
|
|
}
|
|
|
|
gdb_test_multiple "set extended-prompt \\w " \
|
|
"set extended prompt working directory" {
|
|
-re "\[\r\n\][string_to_regexp $working_dir] $" {
|
|
pass $gdb_test_name
|
|
}
|
|
}
|
|
|
|
gdb_test_multiple "set extended-prompt some param \\p{python print-stack} " \
|
|
"set extended prompt parameter" {
|
|
-re "\[\r\n\]some param full $" {
|
|
pass $gdb_test_name
|
|
}
|
|
}
|
|
|
|
# Start with a fresh gdb.
|
|
clean_restart ${testfile}
|
|
|
|
# The following tests require execution.
|
|
|
|
if {![runto_main]} {
|
|
return 0
|
|
}
|
|
|
|
# print-stack settings
|
|
gdb_test "show python print-stack" \
|
|
"The mode of Python stack printing on error is \"message\".*" \
|
|
"Test print-stack show setting. Default is message."
|
|
gdb_py_test_silent_cmd "set python print-stack full" \
|
|
"Test print-stack set setting to full" 1
|
|
gdb_test "show python print-stack" \
|
|
"The mode of Python stack printing on error is \"full\".*" \
|
|
"Test print-stack show setting to full"
|
|
gdb_py_test_silent_cmd "set python print-stack none" \
|
|
"Test print-stack set setting to none" 1
|
|
gdb_test "show python print-stack" \
|
|
"The mode of Python stack printing on error is \"none\".*" \
|
|
"test print-stack show setting to none"
|
|
|
|
gdb_py_test_silent_cmd "set python print-stack message" \
|
|
"Test print-stack set setting to message" 1
|
|
|
|
gdb_test_multiline "prompt substitution readline error_prompt" \
|
|
"python" "" \
|
|
"pCounter = 0" "" \
|
|
"def error_prompt(current):" "" \
|
|
" raise RuntimeError(\"Python exception called\")" "" \
|
|
"end" ""
|
|
|
|
gdb_test_multiple "python gdb.prompt_hook = error_prompt" "set the hook error_prompt" {
|
|
-re "Python Exception (exceptions.RuntimeError|<(type 'exceptions.|class ')RuntimeError'>): Python exception called\r\n$gdb_prompt $" {
|
|
pass $gdb_test_name
|
|
}
|
|
}
|
|
|
|
gdb_py_test_silent_cmd "python gdb.prompt_hook = None" \
|
|
"set the hook to default 1" 1
|
|
|
|
gdb_py_test_silent_cmd "set python print-stack full" \
|
|
"set print-stack full for prompt error test" 1
|
|
|
|
gdb_test_multiple "python gdb.prompt_hook = error_prompt" "set the hook error_prompt traceback" {
|
|
-re "Traceback.*File.*line.*RuntimeError.*Python exception called.*$gdb_prompt $" {
|
|
pass $gdb_test_name
|
|
}
|
|
}
|
|
|
|
gdb_py_test_silent_cmd "python gdb.prompt_hook = None" \
|
|
"set the hook to default 2" 1
|
|
|
|
# Start with a fresh gdb.
|
|
clean_restart ${testfile}
|
|
|
|
# The following tests require execution.
|
|
|
|
if {![runto_main]} {
|
|
return 0
|
|
}
|
|
|
|
runto [gdb_get_line_number "Break at func2 call site."]
|
|
|
|
gdb_py_test_silent_cmd "python line = gdb.selected_frame().find_sal().line" "Get line number of func2 call site" 1
|
|
|
|
gdb_py_test_silent_cmd "python pc_call = gdb.selected_frame().pc()" \
|
|
"Get pc of func2 call site" 1
|
|
|
|
gdb_test "python print (gdb.find_pc_line(gdb.selected_frame().pc()).line == line)" "True" "test find_pc_line at func2 call site"
|
|
|
|
gdb_py_test_silent_cmd "step" "Step into func2" 1
|
|
gdb_py_test_silent_cmd "up" "Step out of func2" 1
|
|
|
|
# The point of the following test is to see if gdb has advanced past the
|
|
# location where the branch to a function was made.
|
|
set test_name "test find_pc_line with resume address"
|
|
|
|
gdb_py_test_silent_cmd "python pc_rtn = gdb.selected_frame().pc()" \
|
|
"Get pc at func2 return site" 1
|
|
|
|
gdb_test "python print (pc_rtn > pc_call)" "True" \
|
|
"test resume address greater then call address"
|
|
|
|
gdb_test "python print (gdb.find_pc_line(pc_rtn).line >= line)" "True" \
|
|
"test find_pc_line with resume address"
|
|
gdb_test "python print (gdb.find_pc_line(pc_rtn).line == gdb.find_pc_line(gdb.Value(pc_rtn)).line)" \
|
|
"True" \
|
|
"test find_pc_line using Value"
|
|
|
|
gdb_test_no_output "set variable \$cvar1 = 23" "set convenience variable"
|
|
gdb_test "python print(gdb.convenience_variable('cvar1'))" "23"
|
|
gdb_test "python print(gdb.convenience_variable('cvar2'))" "None"
|
|
gdb_test_no_output "python gdb.set_convenience_variable('cvar1', 89)" \
|
|
"change convenience variable from python"
|
|
gdb_test "python print(gdb.convenience_variable('cvar1'))" "89" \
|
|
"print new value of convenience variable from python"
|
|
gdb_test "print \$cvar1" " = 89" \
|
|
"print new value of convenience variable from CLI"
|
|
gdb_test_no_output "python gdb.set_convenience_variable('cvar3', -5)" \
|
|
"make convenience variable from python"
|
|
gdb_test "python print(gdb.convenience_variable('cvar3'))" "-5" \
|
|
"print value of new convenience variable from python"
|
|
gdb_test_no_output "python gdb.set_convenience_variable('cvar3', None)" \
|
|
"reset convenience variable from python"
|
|
gdb_test "python print(gdb.convenience_variable('cvar3'))" "None" \
|
|
"print reset convenience variable from python"
|
|
gdb_test "print \$cvar3" "= void" \
|
|
"print reset convenience variable from CLI"
|
|
|
|
# Test PR 23669, the following would invoke the "commands" command instead of
|
|
# "show commands".
|
|
gdb_test "python gdb.execute(\"show commands\")" "$decimal print \\\$cvar3.*"
|
|
|
|
# Check if starti command is supported.
|
|
if { [use_gdb_stub] == 0 } {
|
|
# Test that the from_tty argument to gdb.execute is effective. If
|
|
# False, the user is not prompted for decisions such as restarting the
|
|
# program, and "yes" is assumed. If True, the user is prompted.
|
|
# Case 1, from_tty=False.
|
|
gdb_test "python gdb.execute('starti', from_tty=False)" \
|
|
"Program stopped.*" \
|
|
"starti via gdb.execute, not from tty"
|
|
|
|
# Case 2, from_tty=True.
|
|
set test "starti via gdb.execute, from tty"
|
|
set question \
|
|
[multi_line \
|
|
{The program being debugged has been started already\.} \
|
|
{Start it from the beginning\? \(y or n\) $}]
|
|
gdb_test_multiple "python gdb.execute('starti', from_tty=True)" $test {
|
|
-re $question {
|
|
gdb_test "y" "Starting program:.*" $gdb_test_name
|
|
}
|
|
}
|
|
}
|