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https://github.com/bminor/binutils-gdb.git
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a207f6b3a3
The "python" command (and the Python implementation of the gdb "source" command) does not handle Python exceptions in the same way as other gdb-facing Python code. In particular, exceptions are turned into a generic error rather than being routed through gdbpy_handle_exception, which takes care of converting to 'quit' as appropriate. I think this was done this way because PyRun_SimpleFile and friends do not propagate the Python exception -- they simply indicate that one occurred. This patch reimplements these functions to respect the general gdb convention here. As a bonus, some Windows-specific code can be removed, as can the _execute_file function. The bulk of this change is tweaking the test suite to match the new way that exceptions are displayed. These changes are largely uninteresting. However, it's worth pointing out the py-error.exp change. Here, the failure changes because the test changes the host charset to something that isn't supported by Python. This then results in a weird error in the new setup. Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=31354 Acked-By: Tom de Vries <tdevries@suse.de> Reviewed-By: Eli Zaretskii <eliz@gnu.org>
475 lines
15 KiB
Plaintext
475 lines
15 KiB
Plaintext
# Copyright (C) 2023-2024 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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load_lib gdb-python.exp
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require allow_python_tests
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standard_testfile
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if {[build_executable "failed to prepare" ${testfile} ${srcfile}]} {
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return -1
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}
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# Remove debug information from BINFILE and place it into
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# BINFILE.debug.
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if {[gdb_gnu_strip_debug $binfile]} {
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unsupported "cannot produce separate debug info files"
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return -1
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}
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set remote_python_file \
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[gdb_remote_download host ${srcdir}/${subdir}/${testfile}.py]
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set debug_filename ${binfile}.debug
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set hidden_filename ${binfile}.hidden
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# Start GDB.
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clean_restart
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# Some initial sanity checks; initially, we can find the debug information
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# (this will use the .gnu_debuglink), then after we move the debug
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# information, reload the executable, now the debug can't be found.
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with_test_prefix "initial checks" {
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# Load BINFILE, we should find the separate debug information.
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gdb_file_cmd $binfile
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gdb_assert {$gdb_file_cmd_debug_info == "debug"} \
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"debug info is found"
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# Rename the debug information file, re-load BINFILE, GDB should fail
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# to find the debug information
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remote_exec build "mv $debug_filename $hidden_filename"
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gdb_file_cmd $binfile
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gdb_assert {$gdb_file_cmd_debug_info == "nodebug"} \
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"debug info no longer found"
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}
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# Load the Python script into GDB.
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gdb_test "source $remote_python_file" "^Success" \
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"source python script"
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# Setup the separate debug info directory. This isn't actually needed until
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# some of the later tests, but might as well get this done now.
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set debug_directory [standard_output_file "debug-dir"]
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remote_exec build "mkdir -p $debug_directory"
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gdb_test_no_output "set debug-file-directory $debug_directory" \
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"set debug-file-directory"
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# Initially the missing debug handler we install is in a mode where it
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# returns None, indicating that it can't help locate the debug information.
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# Check this works as expected.
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with_test_prefix "handler returning None" {
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gdb_test_no_output \
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"python gdb.missing_debug.register_handler(None, handler_obj)" \
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"register the initial handler"
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gdb_file_cmd $binfile
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gdb_assert {$gdb_file_cmd_debug_info == "nodebug"} \
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"debug info not found"
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# Check the handler was only called once.
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gdb_test "python print(handler_obj.call_count)" "^1" \
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"check handler was only called once"
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}
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# Now configure the handler to move the debug file back to the
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# .gnu_debuglink location and then return True, this will cause GDB to
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# recheck, at which point it should find the debug info.
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with_test_prefix "handler in gnu_debuglink mode" {
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gdb_test_no_output "python handler_obj.set_mode(Mode.RETURN_TRUE, \
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\"$hidden_filename\", \
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\"$debug_filename\")" \
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"confirgure handler"
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gdb_file_cmd $binfile
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gdb_assert {$gdb_file_cmd_debug_info == "debug"} "debug info found"
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# Check the handler was only called once.
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gdb_test "python print(handler_obj.call_count)" "^1" \
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"check handler was only called once"
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}
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# Setup a directory structure based on the build-id of BINFILE, but don't
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# move the debug information into place just yet.
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#
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# Instead, configure the handler to move the debug info into the build-id
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# directory.
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#
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# Reload BINFILE, at which point the handler will move the debug info into
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# the build-id directory and return True, GDB will then recheck for the
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# debug information, and should find it.
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with_test_prefix "handler in build-id mode" {
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# Move the debug file out of the way once more.
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remote_exec build "mv $debug_filename $hidden_filename"
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# Create the build-id based directory in which the debug information
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# will be placed.
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set build_id_filename \
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$debug_directory/[build_id_debug_filename_get $binfile]
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remote_exec build "mkdir -p [file dirname $build_id_filename]"
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# Configure the handler to move the debug info into the build-id dir.
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gdb_test_no_output "python handler_obj.set_mode(Mode.RETURN_TRUE, \
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\"$hidden_filename\", \
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\"$build_id_filename\")" \
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"confirgure handler"
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# Reload the binary and check the debug information is found.
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gdb_file_cmd $binfile
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gdb_assert {$gdb_file_cmd_debug_info == "debug"} "debug info found"
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# Check the handler was only called once.
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gdb_test "python print(handler_obj.call_count)" "^1" \
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"check handler was only called once"
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}
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# Move the debug information back to a hidden location and configure the
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# handler to return the filename of the hidden debug info location. GDB
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# should immediately use this file as the debug information.
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with_test_prefix "handler returning a string" {
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remote_exec build "mv $build_id_filename $hidden_filename"
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# Configure the handler return a filename string.
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gdb_test_no_output "python handler_obj.set_mode(Mode.RETURN_STRING, \
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\"$hidden_filename\")" \
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"confirgure handler"
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# Reload the binary and check the debug information is found.
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gdb_file_cmd $binfile
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gdb_assert {$gdb_file_cmd_debug_info == "debug"} "debug info found"
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# Check the handler was only called once.
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gdb_test "python print(handler_obj.call_count)" "^1" \
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"check handler was only called once"
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}
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# Register another global handler, this one raises an exception. Reload the
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# debug information, the bad handler should be invoked first, which raises
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# an excetption, at which point GDB should skip further Python handlers.
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with_test_prefix "handler raises an exception" {
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gdb_test_no_output \
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"python gdb.missing_debug.register_handler(None, rhandler)"
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foreach_with_prefix exception_type {gdb.GdbError TypeError} {
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gdb_test_no_output \
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"python rhandler.exception_type = $exception_type"
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gdb_file_cmd $binfile
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gdb_assert {$gdb_file_cmd_debug_info == "nodebug"} \
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"debug info not found"
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set re [string_to_regexp \
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"Python Exception <class '$exception_type'>: message"]
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gdb_assert {[regexp $re $gdb_file_cmd_msg]} \
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"check for exception in file command output"
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# Our original handler is still registered, but should not have been
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# called again (as the exception occurs first).
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gdb_test "python print(handler_obj.call_count)" "^1" \
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"check good handler hasn't been called again"
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}
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}
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gdb_test "info missing-debug-handlers" \
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[multi_line \
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"Global:" \
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" exception_handler" \
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" handler"] \
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"check both handlers are visible"
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# Re-start GDB.
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clean_restart
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# Load the Python script into GDB.
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gdb_test "source $remote_python_file" "^Success" \
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"source python script for bad handler name checks"
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# Attempt to register a missing-debug-handler with NAME. The expectation is
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# that this should fail as NAME contains some invalid characters.
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proc check_bad_name {name} {
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set name_re [string_to_regexp $name]
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set re \
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[multi_line \
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"ValueError.*: invalid character '.' in handler name: $name_re" \
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"Error occurred in Python.*"]
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gdb_test "python register(\"$name\")" $re \
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"check that '$name' is not accepted"
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}
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# We don't attempt to be exhaustive here, just check a few random examples
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# of invalid names.
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check_bad_name "!! Bad Name"
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check_bad_name "Bad Name"
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check_bad_name "(Bad Name)"
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check_bad_name "Bad \[Name\]"
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check_bad_name "Bad,Name"
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check_bad_name "Bad;Name"
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# Check that there are no handlers registered.
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gdb_test_no_output "info missing-debug-handlers" \
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"check no handlers are registered"
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# Check we can use the enable/disable commands where there are no handlers
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# registered.
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gdb_test "enable missing-debug-handler foo" \
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"^0 missing debug handlers enabled"
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gdb_test "disable missing-debug-handler foo" \
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"^0 missing debug handlers disabled"
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# Grab the current program space object, used for registering handler later.
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gdb_test_no_output "python pspace = gdb.selected_inferior().progspace"
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# Now register some handlers.
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foreach hspec {{\"Foo\" None}
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{\"-bar\" None}
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{\"baz-\" pspace}
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{\"abc-def\" pspace}} {
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lassign $hspec name locus
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gdb_test "python register($name, $locus)"
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}
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with_test_prefix "all handlers enabled" {
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gdb_test "info missing-debug-handlers" \
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[multi_line \
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"Current Progspace:" \
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" abc-def" \
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" baz-" \
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"Global:" \
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" -bar" \
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" Foo"]
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gdb_file_cmd $binfile
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gdb_test "python print(handler_call_log)" \
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[string_to_regexp {['abc-def', 'baz-', '-bar', 'Foo']}]
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gdb_test_no_output "python handler_call_log = \[\]" \
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"reset call log"
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}
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with_test_prefix "disable 'baz-'" {
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gdb_test "disable missing-debug-handler progspace baz-" \
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"^1 missing debug handler disabled"
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gdb_test "info missing-debug-handlers" \
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[multi_line \
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"Progspace \[^\r\n\]+:" \
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" abc-def" \
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" baz- \\\[disabled\\\]" \
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"Global:" \
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" -bar" \
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" Foo"]
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gdb_file_cmd $binfile
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gdb_test "python print(handler_call_log)" \
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[string_to_regexp {['abc-def', '-bar', 'Foo']}]
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gdb_test_no_output "python handler_call_log = \[\]" \
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"reset call log"
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}
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with_test_prefix "disable 'Foo'" {
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gdb_test "disable missing-debug-handler .* Foo" \
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"^1 missing debug handler disabled"
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gdb_test "info missing-debug-handlers" \
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[multi_line \
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"Progspace \[^\r\n\]+:" \
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" abc-def" \
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" baz- \\\[disabled\\\]" \
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"Global:" \
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" -bar" \
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" Foo \\\[disabled\\\]"]
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gdb_file_cmd $binfile
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gdb_test "python print(handler_call_log)" \
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[string_to_regexp {['abc-def', '-bar']}]
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gdb_test_no_output "python handler_call_log = \[\]" \
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"reset call log"
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}
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with_test_prefix "disable everything" {
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gdb_test "disable missing-debug-handler .* .*" \
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"^2 missing debug handlers disabled"
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gdb_test "info missing-debug-handlers" \
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[multi_line \
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"Progspace \[^\r\n\]+:" \
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" abc-def \\\[disabled\\\]" \
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" baz- \\\[disabled\\\]" \
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"Global:" \
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" -bar \\\[disabled\\\]" \
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" Foo \\\[disabled\\\]"]
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gdb_file_cmd $binfile
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gdb_test "python print(handler_call_log)" \
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[string_to_regexp {[]}]
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gdb_test_no_output "python handler_call_log = \[\]" \
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"reset call log"
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}
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with_test_prefix "enable 'abc-def'" {
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set re [string_to_regexp $binfile]
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gdb_test "enable missing-debug-handler \"$re\" abc-def" \
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"^1 missing debug handler enabled" \
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"enable missing-debug-handler"
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gdb_test "info missing-debug-handlers" \
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[multi_line \
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"Progspace \[^\r\n\]+:" \
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" abc-def" \
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" baz- \\\[disabled\\\]" \
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"Global:" \
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" -bar \\\[disabled\\\]" \
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" Foo \\\[disabled\\\]"]
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gdb_file_cmd $binfile
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gdb_test "python print(handler_call_log)" \
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[string_to_regexp {['abc-def']}]
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gdb_test_no_output "python handler_call_log = \[\]" \
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"reset call log"
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}
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with_test_prefix "enable global handlers" {
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set re [string_to_regexp $binfile]
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gdb_test "enable missing-debug-handler global" \
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"^2 missing debug handlers enabled"
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gdb_test "info missing-debug-handlers" \
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[multi_line \
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"Progspace \[^\r\n\]+:" \
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" abc-def" \
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" baz- \\\[disabled\\\]" \
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"Global:" \
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" -bar" \
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" Foo"]
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gdb_file_cmd $binfile
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gdb_test "python print(handler_call_log)" \
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[string_to_regexp {['abc-def', '-bar', 'Foo']}]
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gdb_test_no_output "python handler_call_log = \[\]" \
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"reset call log"
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}
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# Add handler_obj to the global handler list, and configure it to
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# return False. We should call all of the program space specific
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# handlers (which return None), and then call handler_obj from the
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# global list, which returns False, at which point we shouldn't call
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# anyone else.
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with_test_prefix "return False handler in progspace list" {
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gdb_test "enable missing-debug-handler progspace" \
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"^1 missing debug handler enabled"
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gdb_test_no_output \
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"python gdb.missing_debug.register_handler(None, handler_obj)" \
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"register the initial handler"
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gdb_test "info missing-debug-handlers" \
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[multi_line \
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"Progspace \[^\r\n\]+:" \
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" abc-def" \
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" baz-" \
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"Global:" \
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" handler" \
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" -bar" \
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" Foo"]
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gdb_test_no_output "python handler_obj.set_mode(Mode.RETURN_FALSE)" \
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"confirgure handler"
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gdb_file_cmd $binfile
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gdb_test "python print(handler_call_log)" \
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[string_to_regexp {['abc-def', 'baz-', 'handler']}]
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gdb_test_no_output "python handler_call_log = \[\]" \
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"reset call log"
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}
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# Now add handler_obj to the current program space's handler list. We
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# use the same handler object here, that's fine. We should only see a
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# call to the first handler object in the call log.
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with_test_prefix "return False handler in global list" {
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gdb_test_no_output \
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"python gdb.missing_debug.register_handler(pspace, handler_obj)" \
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"register the initial handler"
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gdb_test "info missing-debug-handlers" \
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[multi_line \
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"Progspace \[^\r\n\]+:" \
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" handler" \
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" abc-def" \
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" baz-" \
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"Global:" \
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" handler" \
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" -bar" \
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" Foo"]
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gdb_file_cmd $binfile
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gdb_test "python print(handler_call_log)" \
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[string_to_regexp {['handler']}]
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gdb_test_no_output "python handler_call_log = \[\]" \
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"reset call log"
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}
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with_test_prefix "check handler replacement" {
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# First, check we can have the same name appear in both program
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# space and global lists without giving an error.
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gdb_test_no_output "python register(\"Foo\", pspace)"
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gdb_test "info missing-debug-handlers" \
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[multi_line \
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"Progspace \[^\r\n\]+:" \
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" Foo" \
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" handler" \
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" abc-def" \
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" baz-" \
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"Global:" \
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" handler" \
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" -bar" \
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" Foo"]
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# Now check that we get an error if we try to add a handler with
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# the same name.
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gdb_test "python gdb.missing_debug.register_handler(pspace, log_handler(\"Foo\"))" \
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[multi_line \
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"RuntimeError.*: Handler Foo already exists\\." \
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"Error occurred in Python.*"]
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gdb_test "python gdb.missing_debug.register_handler(handler=log_handler(\"Foo\"), locus=pspace)" \
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[multi_line \
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"RuntimeError.*: Handler Foo already exists\\." \
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"Error occurred in Python.*"]
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# And now try again, but this time with 'replace=True', we
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# shouldn't get an error in this case.
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gdb_test_no_output \
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"python gdb.missing_debug.register_handler(pspace, log_handler(\"Foo\"), replace=True)"
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gdb_test_no_output \
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"python gdb.missing_debug.register_handler(handler=log_handler(\"Foo\"), locus=None, replace=True)"
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# Now disable a handler and check we still need to use 'replace=True'.
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gdb_test "disable missing-debug-handler progspace Foo" \
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"^1 missing debug handler disabled"
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gdb_test "python gdb.missing_debug.register_handler(pspace, log_handler(\"Foo\"))" \
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[multi_line \
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"RuntimeError.*: Handler Foo already exists\\." \
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"Error occurred in Python.*"] \
|
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"still get an error when handler is disabled"
|
|
|
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gdb_test_no_output \
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"python gdb.missing_debug.register_handler(pspace, log_handler(\"Foo\"), replace=True)" \
|
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"can replace a disabled handler"
|
|
}
|