This commit applies all changes made after running the gdb/copyright.py
script.
Note that one file was flagged by the script, due to an invalid
copyright header
(gdb/unittests/basic_string_view/element_access/char/empty.cc).
As the file was copied from GCC's libstdc++-v3 testsuite, this commit
leaves this file untouched for the time being; a patch to fix the header
was sent to gcc-patches first.
gdb/ChangeLog:
Update copyright year range in all GDB files.
This adds a "context" argument to add_setshow_enum_cmd. Now
add_setshow_enum_cmd will call set_cmd_context on both of the new
commands. This is used in a later patch.
gdb/ChangeLog
2018-12-28 Tom Tromey <tom@tromey.com>
* command.h (add_setshow_enum_cmd): Add "context" argument.
* cli/cli-decode.c (add_setshow_enum_cmd): Add "context"
argument. Call set_cmd_context.
The 'frame' command, and thanks to code reuse the 'info frame' and
'select-frame' commands, currently have an overloaded mechanism for
selecting a frame.
These commands take one or two parameters, if it's one parameter then
we first try to use the parameter as an integer to select a frame by
level (or depth in the stack). If that fails then we treat the
parameter as an address and try to select a stack frame by
stack-address. If we still have not selected a stack frame, or we
initially had two parameters, then GDB allows the user to view a stack
frame that is not part of the current backtrace. Internally, a new
frame is created with the given stack and pc addresses, and this is
shown to the user.
The result of this is that a typo by the user, entering the wrong stack
frame level for example, can result in a brand new frame being viewed
rather than an error.
The purpose of this commit is to remove this overloading, while still
offering the same functionality through some new sub-commands. By
making the default behaviour of 'frame' (and friends) be to select a
stack frame by level index, it is hoped that enough
backwards-compatibility is maintained that users will not be overly
inconvenienced.
The 'frame', 'select-frame', and 'info frame' commands now all take a
frame specification string as an argument, this string can be any of the
following:
(1) An integer. This is treated as a frame level. If a frame for
that level does not exist then the user gets an error.
(2) A string like 'level <LEVEL>', where <LEVEL> is a frame level
as in option (1) above.
(3) A string like 'address <STACK-ADDRESS>', where <STACK-ADDRESS>
is a stack-frame address. If there is no frame for this address
then the user gets an error.
(4) A string like 'function <NAME>', where <NAME> is a function name,
the inner most frame for function <NAME> is selected. If there is no
frame for function <NAME> then the user gets an error.
(5) A string like 'view <STACK-ADDRESS>', this views a new frame
with stack address <STACK-ADDRESS>.
(6) A string like 'view <STACK-ADDRESS> <PC-ADDRESS>', this views
a new frame with stack address <STACK-ADDRESS> and the pc <PC-ADDRESS>.
This change assumes that the most common use of the commands like
'frame' is to select a frame by frame level, it is for this reason
that this is the behaviour that is kept for backwards compatibility.
Any of the alternative behaviours, which are assumed to be less used,
now require a change in user behaviour.
The MI command '-stack-select-frame' has not been changed. This
ensures that we maintain backwards compatibility for existing
frontends.
gdb/ChangeLog:
(NEWS): Mention changes to frame related commands.
* cli/cli-decode.c (add_cmd_suppress_notification): New function.
(add_prefix_cmd_suppress_notification): New function.
(add_com_suppress_notification): Call
add_cmd_suppress_notification.
* command.h (add_cmd_suppress_notification): Declare.
(add_prefix_cmd_suppress_notification): Declare.
* mi/mi-cmd-stack.c: Add 'safe-ctype.h' include.
(parse_frame_specification): Moved from stack.c, with
simplification to handle a single argument.
(mi_cmd_stack_select_frame): Use parse_frame_specification, the
switch to the selected frame. Add a header comment.
* stack.c: Remove 'safe-ctype.h' include.
(find_frame_for_function): Add declaration.
(find_frame_for_address): New function.
(parse_frame_specification): Moved into mi/mi-cmd-stack.c.
(frame_selection_by_function_completer): New function.
(info_frame_command): Rename to...
(info_frame_command_core): ...this, and update parameter types.
(select_frame_command): Rename to...
(select_frame_command_core): ...this, and update parameter types.
(frame_command): Rename to...
(frame_command_core): ...this, and update parameter types.
(class frame_command_helper): New class to wrap implementations of
frame related sub-commands.
(frame_apply_cmd_list): New static global.
(frame_cmd_list): Make static.
(select_frame_cmd_list): New global for sub-commands.
(info_frame_cmd_list): New global for sub-commands.
(_initialize_stack): Register sub-commands for 'frame',
'select-frame', and 'info frame'. Update 'frame apply' commands
to use frame_apply_cmd_list. Move function local static
frame_apply_list to file static frame_apply_cmd_list for
consistency.
* stack.h (select_frame_command): Delete declarationn.
(select_frame_for_mi): Declare new function.
gdb/doc/ChangeLog:
* gdb.texinfo (Frames): Rewrite the description of 'frame number'
to highlight that the number is also the frame's level.
(Selection): Rewrite documentation for 'frame' and 'select-frame'
commands.
(Frame Info): Rewrite documentation for 'info frame' command.
gdb/testsuite/ChangeLog:
* gdb.base/frame-selection.exp: New file.
* gdb.base/frame-selection.c: New file.
This removes dead code that, according to the comments, existed to
placate lint. I don't think this has been relevant in a long time,
and certainly not since gdb switched to C++.
Tested by rebuilding.
ChangeLog
2018-07-30 Tom Tromey <tom@tromey.com>
* cli/cli-decode.c (lookup_cmd): Remove lint code.
* value.c (unpack_long): Remove lint code.
* valops.c (value_ind): Remove lint code.
* valarith.c (value_x_binop, value_x_unop, value_equal)
(value_pos): Remove lint code.
This adds a constructor and destructor to cmd_list_element and changes
it to be allocated with new. This will be useful in a subsequent
patch.
ChangeLog
2018-05-04 Tom Tromey <tom@tromey.com>
* cli/cli-decode.h (cmd_list_element): New constructor.
(~cmd_list_element): New destructor.
(struct cmd_list_element): Add initializers.
* cli/cli-decode.c (do_add_cmd): Use "new".
(delete_cmd): Use "delete".
We have several places doing essentially the same thing; factor them
out to a central place. Some of the places overallocate for no good
reason, or use strcat unnecessarily. The centralized version is more
precise and to the point.
(I considered making the gdb::unique_xmalloc_ptr overload version of
make_completer_match_str try to realloc (not xrealloc) probably
avoiding an allocation in most cases, but that'd be probably overdoing
it, and also, now that I'm writing this I thought I'd try to see how
could we ever get to filename_completer with "text != word", but I
couldn't figure it out. Running the testsuite with 'gdb_assert (text
== word);' never tripped on the assertion either. So post gdb 8.1,
I'll probably propose a patch to simplify filename_completer a bit,
and the gdb::unique_xmalloc_str overload can be removed then.)
gdb/ChangeLog:
2017-12-13 Pedro Alves <palves@redhat.com>
* cli/cli-decode.c (complete_on_cmdlist, complete_on_enum): Use
make_completion_match_str.
* completer.c: Use gdb::unique_xmalloc_ptr and
make_completion_match_str.
(make_completion_match_str_1): New.
(make_completion_match_str(const char *, const char *,
const char *)): New.
(make_completion_match_str(gdb::unique_xmalloc_ptr<char> &&,
const char *, const char *)): New.
* completer.h (make_completion_match_str(const char *,
const char *, const char *)): New.
(make_completion_match_str(gdb::unique_xmalloc_ptr<char> &&,
const char *, const char *)): New.
* interps.c (interpreter_completer): Use make_completion_match_str.
* symtab.c (completion_list_add_name, add_filename_to_list): Use
make_completion_match_str.
Recent gcc 8 trunk emits the warning below,
../../../binutils-gdb/gdb/gdbserver/remote-utils.c:1204:14: error: ‘char* strncpy(char*, const char*, size_t)’ output truncated before terminating nul copying 6 bytes from a string of the same length [-Werror=stringop-truncation]
strncpy (buf, "watch:", 6);
~~~~~~~~^~~~~~~~~~~~~~~~~~
../../binutils-gdb/gdb/cli/cli-decode.c:1118:15: error: ‘char* strncpy(char*, const char*, size_t)’ specified bound depends on the length of the source argument [-Werror=stringop-overflow=]
strncpy (cmdtype1 + 1, cmdtype, len - 1);
~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../binutils-gdb/gdb/cli/cli-decode.c:1110:16: note: length computed here
len = strlen (cmdtype);
~~~~~~~^~~~~~~~~
../../binutils-gdb/gdb/cli/cli-decode.c:1120:15: error: ‘char* strncpy(char*, const char*, size_t)’ specified bound depends on the length of the source argument [-Werror=stringop-overflow=]
strncpy (cmdtype2, cmdtype, len - 1);
~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../binutils-gdb/gdb/cli/cli-decode.c:1110:16: note: length computed here
len = strlen (cmdtype);
~~~~~~~^~~~~~~~~
../../binutils-gdb/gdb/cp-namespace.c:1071:11: error: ‘char* strncpy(char*, const char*, size_t)’ output truncated before terminating nul copying 2 bytes from a string of the same length [-Werror=stringop-truncation]
strncpy (full_name + scope_length, "::", 2);
~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
This patch fixes it by using memcpy instead of strncpy.
gdb:
2017-11-22 Yao Qi <yao.qi@linaro.org>
* cli/cli-decode.c (help_list): Use memcpy instead of strncpy.
* cp-namespace.c (cp_lookup_transparent_type_loop): Likewise.
gdb/gdbserver:
2017-11-22 Yao Qi <yao.qi@linaro.org>
* remote-utils.c (prepare_resume_reply): Use memcpy.
set_cmd_cfunc is only used in cli-decode.c, and I don't think there is
a good reason to expose it directly. So, this patch makes it private.
gdb/ChangeLog
2017-11-07 Tom Tromey <tom@tromey.com>
* command.h (set_cmd_cfunc): Don't declare.
* cli/cli-decode.c (set_cmd_cfunc): Now static.
This constifies add_com_suppress_notification and fixes the one
caller.
gdb/ChangeLog
2017-11-07 Tom Tromey <tom@tromey.com>
* stack.c (select_frame_command): Constify.
* cli/cli-decode.c (add_com_suppress_notification): Constify.
* command.h (add_com_suppress_notification): Constify.
This changes add_abbrev_prefix_cmd to take a const-taking callback
function and then fixes the one caller.
gdb/ChangeLog
2017-11-07 Tom Tromey <tom@tromey.com>
* breakpoint.c (stop_command): Constify.
* cli/cli-decode.c (struct cmd_list_element): Constify.
* command.h (add_abbrev_prefix_cmd): Constify.
This adds two add_cmd overloads: one whose callback takes a const char *,
and one that doesn't accept a function at all. The no-function overload
was introduced to avoid ambiguity when NULL was passed as the function.
Long term the goal is for all commands to take const arguments, and
for the non-const variants to be removed entirely.
gdb/ChangeLog
2017-09-27 Tom Tromey <tom@tromey.com>
* cli/cli-decode.c (add_cmd, set_cmd_cfunc): New function
overloads.
(do_add_cmd): Rename from add_cmd. Don't call set_cmd_cfunc.
(do_const_cfunc): New function.
(cmd_cfunc_eq): New overload.
(cli_user_command_p): Check do_const_cfunc.
* cli/cli-decode.h (struct cmd_list_element) <function>: New field
const_cfunc.
* command.h (add_cmd): Add const overload and no-function
overload.
(set_cmd_cfunc): Add const overload.
(cmd_const_cfunc_ftype): Declare.
(cmd_cfunc_eq): Add const overload.
* breakpoint.c, cli-cmds.c, cli-dump.c, guile/scm-cmd.c,
python/py-cmd.c, target.c, tracepoint.c: Use no-function add_cmd
overload.
This patch reworks the whole completion machinery, and prepares it
for later enhancements.
Adds a new "completion_tracker" class that is meant to hold everything
about the state of the current completion operation.
This class now has the responsibility of tracking the list of
completion matches, and checking whether the max completions limit has
been reached. You can look at this as this patch starting out by
C++fying the existing "completion_tracker" in symtab.c (it's just an
htab_t typedef currently), moving it to completer.h/c, and then making
it a class/generalizing/enhancing it.
Unlike with the current tracking, completion_tracker now checks
whether the limit has been reached on each completion match list
insertion. This both simplifies the max-completions handling code
(maybe_add_completion_enum is gone, for example), and is a
prerequisite for follow up patches.
The current completion_tracker is only used for symbol completions,
and the symbol code gets at the current instance via globals. This
patch cleans that up by adding a completion_tracker reference to the
signature of the completion functions, and passing the tracker around
everywhere necessary.
Then, the patch changes how the completion match list is handed over
to readline. Currently, we're using the rl_completion_entry_function
readline entry point, and the patch switches to
rl_attempted_completion_function. A following patch will want to let
GDB itself decide the common completion prefix between all matches
(what readline calls the "lowest common denominator"), instead of
having readline compute it, and that's not possible with the
rl_completion_entry_function entry point. Also,
rl_attempted_completion_function lets GDB hand over the match list to
readline as an array in one go instead of passing down matches one by
one, so from that angle it's a nicer entry point anyway.
Lastly, the patch catches exceptions around the readline entry points,
because we can't let C++ exceptions cross readline. We handle that in
the readline input entry point, but the completion entry point isn't
guarded, so GDB can abort if completion throws. E.g., in current
master:
(gdb) b -function "fun<tab>
terminate called after throwing an instance of 'gdb_exception_RETURN_MASK_ERROR'
Aborted (core dumped)
This patch fixes that. This will be exercised in the new tests added
later on in the series.
gdb/ChangeLog:
2017-07-17 Pedro Alves <palves@redhat.com>
* ada-lang.c (symbol_completion_match): Adjust comments.
(symbol_completion_add): Replace vector parameter with
completion_tracker parameter. Use it.
(ada_make_symbol_completion_list): Rename to...
(ada_collect_symbol_completion_matches): ... this. Add
completion_tracker parameter and use it.
(ada_language_defn): Adjust.
* break-catch-syscall.c (catch_syscall_completer): Adjust
prototype and work with completion_tracker instead of VEC.
* breakpoint.c (condition_completer): Adjust prototype and work
with completion_tracker instead of VEC.
* c-lang.c (c_language_defn, cplus_language_defn)
(asm_language_defn, minimal_language_defn): Adjust to renames.
* cli/cli-cmds.c (complete_command): Rework using
completion_tracker. Catch exceptions when completing.
* cli/cli-decode.c (integer_unlimited_completer)
(complete_on_cmdlist, complete_on_enum): Adjust prototype and work
with completion_tracker instead of VEC.
* command.h (struct completion_tracker): Forward declare.
(completer_ftype, completer_handle_brkchars_ftype): Change
types.
(complete_on_cmdlist, complete_on_enum): Adjust.
* completer.c: Include <algorithm>.
(struct gdb_completer_state): New.
(current_completion): New global.
(readline_line_completion_function): Delete.
(noop_completer, filename_completer)
(filename_completer_handle_brkchars, complete_files_symbols)
(linespec_location_completer): Adjust to work with a
completion_tracker instead of a VEC.
(string_or_empty): New.
(collect_explicit_location_matches): Adjust to work with a
completion_tracker instead of a VEC.
(explicit_location_completer): Rename to ...
(complete_explicit_location): ... this and adjust to work with a
completion_tracker instead of a VEC.
(location_completer): Adjust to work with a completion_tracker
instead of a VEC.
(add_struct_fields): Adjust to work with a completion_list instead
of VEC.
(expression_completer): Rename to ...
(complete_expression): ... this and adjust to work with a
completion_tracker instead of a VEC. Use complete_files_symbols.
(expression_completer): Reimplement on top of complete_expression.
(symbol_completer): Adjust to work with a completion_tracker
instead of a VEC.
(enum complete_line_internal_reason): Add describing comments.
(complete_line_internal_normal_command): Adjust to work with a
completion_tracker instead of a VEC.
(complete_line_internal): Rename to ...
(complete_line_internal_1): ... this and adjust to work with a
completion_tracker instead of a VEC. Assert TEXT is NULL in the
handle_brkchars phase.
(new_completion_tracker): Delete.
(complete_line_internal): Reimplement as TRY/CATCH wrapper around
complete_line_internal_1.
(free_completion_tracker): Delete.
(INITIAL_COMPLETION_HTAB_SIZE): New.
(completion_tracker::completion_tracker)
(completion_tracker::~completion_tracker): New.
(maybe_add_completion): Delete.
(completion_tracker::maybe_add_completion)
(completion_tracker::add_completion)
(completion_tracker::add_completions): New.
(throw_max_completions_reached_error): Delete.
(complete_line): Adjust to work with a completion_tracker instead
of a VEC. Don't create a completion_tracker_t or check for max
completions here.
(command_completer, command_completer_handle_brkchars)
(signal_completer, reg_or_group_completer_1)
(reg_or_group_completer, default_completer_handle_brkchars):
Adjust to work with a completion_tracker.
(gdb_completion_word_break_characters_throw): New.
(gdb_completion_word_break_characters): Reimplement.
(line_completion_function): Delete.
(completion_tracker::recompute_lowest_common_denominator)
(expand_preserving_ws)
(completion_tracker::build_completion_result)
(completion_result::completion_result)
(completion_result::completion_result)
(completion_result::~completion_result)
(completion_result::completion_result)
(completion_result::release_match_list, compare_cstrings)
(completion_result::sort_match_list)
(completion_result::reset_match_list)
(gdb_rl_attempted_completion_function_throw)
(gdb_rl_attempted_completion_function): New.
* completer.h (completion_list, struct completion_result)
(class completion_tracker): New.
(complete_line): Add completion_tracker parameter.
(readline_line_completion_function): Delete.
(gdb_rl_attempted_completion_function): New.
(noop_completer, filename_completer, expression_completer)
(location_completer, symbol_completer, command_completer)
(signal_completer, reg_or_group_completer): Update prototypes.
(completion_tracker_t, new_completion_tracker)
(make_cleanup_free_completion_tracker): Delete.
(enum maybe_add_completion_enum): Delete.
(maybe_add_completion): Delete.
(throw_max_completions_reached_error): Delete.
* corefile.c (complete_set_gnutarget): Adjust to work with a
completion_tracker instead of a VEC.
* cp-abi.c (cp_abi_completer): Adjust to work with a
completion_tracker instead of a VEC.
* d-lang.c (d_language_defn): Adjust.
* disasm.c (disassembler_options_completer): Adjust to work with a
completion_tracker instead of a VEC.
* f-lang.c (f_make_symbol_completion_list): Rename to ...
(f_collect_symbol_completion_matches): ... this. Adjust to work
with a completion_tracker instead of a VEC.
(f_language_defn): Adjust.
* go-lang.c (go_language_defn): Adjust.
* guile/scm-cmd.c (cmdscm_add_completion, cmdscm_completer):
Adjust to work with a completion_tracker instead of a VEC.
* infrun.c (handle_completer): Likewise.
* interps.c (interpreter_completer): Likewise.
* interps.h (interpreter_completer): Likewise.
* language.c (unknown_language_defn, auto_language_defn)
(local_language_defn): Adjust.
* language.h (language_defn::la_make_symbol_completion_list):
Rename to ...
(language_defn::la_collect_symbol_completion_matches): ... this
and adjust to work with a completion_tracker instead of a VEC.
* m2-lang.c (m2_language_defn): Adjust.
* objc-lang.c (objc_language_defn): Adjust.
* opencl-lang.c (opencl_language_defn): Adjust.
* p-lang.c (pascal_language_defn): Adjust.
* python/py-cmd.c (cmdpy_completer_helper): Handle NULL word.
(cmdpy_completer_handle_brkchars, cmdpy_completer): Adjust to work
with a completion_tracker.
* rust-lang.c (rust_language_defn): Adjust.
* symtab.c (free_completion_list, do_free_completion_list)
(return_val, completion_tracker): Delete.
(completion_list_add_name, completion_list_add_symbol)
(completion_list_add_msymbol, completion_list_objc_symbol)
(completion_list_add_fields, add_symtab_completions): Add
completion_tracker parameter and use it.
(default_make_symbol_completion_list_break_on_1): Rename to...
(default_collect_symbol_completion_matches_break_on): ... this.
Add completion_tracker parameter and use it instead of allocating
a completion tracker here.
(default_make_symbol_completion_list_break_on): Delete old
implementation.
(default_make_symbol_completion_list): Delete.
(default_collect_symbol_completion_matches): New.
(make_symbol_completion_list): Delete.
(collect_symbol_completion_matches): New.
(make_symbol_completion_type): Rename to ...
(collect_symbol_completion_matches_type): ... this. Add
completion_tracker parameter and use it instead of VEC.
(make_file_symbol_completion_list_1): Rename to...
(collect_file_symbol_completion_matches): ... this. Add
completion_tracker parameter and use it instead of VEC.
(make_file_symbol_completion_list): Delete.
(add_filename_to_list): Use completion_list instead of a VEC.
(add_partial_filename_data::list): Now a completion_list.
(make_source_files_completion_list): Work with a completion_list
instead of a VEC.
* symtab.h: Include "completer.h".
(default_make_symbol_completion_list_break_on)
(default_make_symbol_completion_list, make_symbol_completion_list)
(make_symbol_completion_type, make_file_symbol_completion_list)
(make_source_files_completion_list): Delete.
(default_collect_symbol_completion_matches_break_on)
(default_collect_symbol_completion_matches)
(collect_symbol_completion_matches)
(collect_symbol_completion_matches_type)
(collect_file_symbol_completion_matches)
(make_source_files_completion_list): New.
* top.c (init_main): Don't install a rl_completion_entry_function
hook. Install a rl_attempted_completion_function hook instead.
* tui/tui-layout.c (layout_completer): Adjust to work with a
completion_tracker.
* tui/tui-regs.c (tui_reggroup_completer):
* tui/tui-win.c (window_name_completer, focus_completer)
(winheight_completer): Adjust to work with a completion_tracker.
* value.c: Include "completer.h".
(complete_internalvar): Adjust to work with a completion_tracker.
* value.h (complete_internalvar): Likewise.
This patch cleans up "completer_handle_brkchars" callback handling:
- Renames the function typedef to better match its intent:
completer_ftype_void -> completer_handle_brkchars_ftype
- Factors out common code in complete_line_internal handling the
"handle_brkchars" callback to a separate function.
- Centralizes all the "completer method" to "handle_brkchars method"
mapping in a single function.
gdb/ChangeLog:
2017-07-17 Pedro Alves <palves@redhat.com>
* cli/cli-decode.c (set_cmd_completer_handle_brkchars): Adjust to
renames.
* cli/cli-decode.h (struct cmd_list_element) <completer>: Move
comments to completer_ftype's declaration.
<completer_handle_brkchars>: Change type to
completer_handle_brkchars_ftype.
* command.h (completer_ftype): Add describing comment and give
names to parameters.
(completer_ftype_void): Rename to ...
(completer_handle_brkchars_ftype) ... this. Add describing comment.
(set_cmd_completer_handle_brkchars): Adjust.
* completer.c (filename_completer_handle_brkchars): New function.
(complete_line_internal_normal_command): New function, factored
out from ...
(complete_line_internal): ... here.
(command_completer_handle_brkchars)
(default_completer_handle_brkchars)
(completer_handle_brkchars_func_for_completer): New functions.
* completer.h (set_gdb_completion_word_break_characters): Delete
declaration.
(completer_handle_brkchars_func_for_completer): New declaration.
* python/py-cmd.c (cmdpy_completer_handle_brkchars): Adjust to use
completer_handle_brkchars_func_for_completer.
"make_symbol_completion_list_fn" is odly named when you look at a list
of "standard" completers, like the Python/Guile completer lists
adjusted by this patch. Rename / move it to completers.h/c, for
consistency.
gdb/ChangeLog:
2017-07-17 Pedro Alves <palves@redhat.com>
* completer.c (symbol_completer): New function, based on
make_symbol_completion_list_fn.
* completer.h (symbol_completer): New declaration.
* guile/scm-cmd.c (cmdscm_completers): Adjust.
* python/py-cmd.c (completers): Adjust.
* symtab.c (make_symbol_completion_list_fn): Delete.
* symtab.h (make_symbol_completion_list_fn): Delete.
* cli/cli-decode.c (add_cmd): Adjust.
This patch replaces compile_rx_or_error and make_regfree_cleanup with
a class that wraps a regex_t.
gdb/ChangeLog:
2017-06-07 Pedro Alves <palves@redhat.com>
* Makefile.in (SFILES): Add gdb_regex.c.
(COMMON_OBS): Add gdb_regex.o.
* ada-lang.c (ada_add_standard_exceptions)
(ada_add_exceptions_from_frame, name_matches_regex)
(ada_add_global_exceptions, ada_exceptions_list_1): Change regex
parameter type to compiled_regex. Adjust.
(ada_exceptions_list): Use compiled_regex.
* break-catch-throw.c (exception_catchpoint::pattern): Now a
std::unique_ptr<compiled_regex>.
(exception_catchpoint::~exception_catchpoint): Remove regfree
call.
(check_status_exception_catchpoint): Adjust to use compiled_regex.
(handle_gnu_v3_exceptions): Adjust to use compiled_regex.
* breakpoint.c (solib_catchpoint::compiled): Now a
std::unique_ptr<compiled_regex>.
(solib_catchpoint::~solib_catchpoint): Remove regfree call.
(check_status_catch_solib): Adjust to use compiled_regex.
(add_solib_catchpoint): Adjust to use compiled_regex.
* cli/cli-cmds.c (apropos_command): Use compiled_regex.
* cli/cli-decode.c (apropos_cmd): Change regex parameter to
compiled_regex reference. Adjust to use it.
* cli/cli-decode.h: Remove struct re_pattern_buffer forward
declaration. Include "gdb_regex.h".
(apropos_cmd): Change regex parameter to compiled_regex reference.
* gdb_regex.c: New file.
* gdb_regex.h (make_regfree_cleanup, get_regcomp_error): Delete
declarations.
(class compiled_regex): New.
* linux-tdep.c: Include "common/gdb_optional.h".
(struct mapping_regexes): New, factored out from
mapping_is_anonymous_p, and adjusted to use compiled_regex.
(mapping_is_anonymous_p): Use mapping_regexes wrapped in a
gdb::optional and remove cleanups. Adjust to compiled_regex.
* probe.c: Include "common/gdb_optional.h".
(collect_probes): Use compiled_regex and gdb::optional and remove
cleanups.
* skip.c: Include "common/gdb_optional.h".
(skiplist_entry::compiled_function_regexp): Now a
gdb::optional<compiled_regex>.
(skiplist_entry::compiled_function_regexp_is_valid): Delete field.
(free_skiplist_entry): Remove regfree call.
(compile_skip_regexp, skip_rfunction_p): Adjust to use
compiled_regex and gdb::optional.
* symtab.c: Include "common/gdb_optional.h".
(search_symbols): Use compiled_regex and gdb::optional.
* utils.c (do_regfree_cleanup, make_regfree_cleanup)
(get_regcomp_error, compile_rx_or_error): Delete. Some bits moved
to gdb_regex.c.
When we add alias command, we call add_alias_cmd and pass the alias name
and command name. This implicitly requires the command and its prefix
commands are already added to cmdlist. This may not be true, for example,
add_com_alias ("tty", "set inferior-tty", class_alias, 0);
"inferior-tty" command is added to setlist, but setlist may not be added
to cmdlist (It depends on the order of related _initialize_XXX functions
called) so that we can't find "set inferior-tty" from cmdlist.
This patch fixes this problem by passing cmd_list_element of "inferior-tty"
to add_alias_cmd, so that cmd_list_element of "inferior-tty" doesn't have
to be reachable from cmdlist at that moment.
gdb:
2017-05-17 Yao Qi <yao.qi@linaro.org>
* cli/cli-decode.c (add_alias_cmd): New function.
* command.h (add_alias_cmd): Declare.
* infcmd.c (_initialize_infcmd): Don't call add_com_alias,
instead call add_alias_cmd.
gdb/testsuite:
2017-05-17 Simon Marchi <simon.marchi@ericsson.com>
* gdb.base/set-inferior-tty.exp (test_set_inferior_tty): Add
argument command.
(top-level): Invoke test_set_inferior_tty.
This changes a few more places to use scoped_restore, allowing some
cleanup removals.
gdb/ChangeLog
2017-04-12 Tom Tromey <tom@tromey.com>
* mi/mi-main.c (exec_direction_forward): Remove.
(exec_reverse_continue, mi_execute_command): Use scoped_restore.
* guile/scm-ports.c (ioscm_with_output_to_port_worker): Use
scoped_restore.
* guile/guile.c (guile_repl_command, guile_command)
(gdbscm_execute_gdb_command): Use scoped_restore.
* go-exp.y (go_parse): Use scoped_restore.
* d-exp.y (d_parse): Use scoped_restore.
* cli/cli-decode.c (cmd_func): Use scoped_restore.
* c-exp.y (c_parse): Use scoped_restore.
When defining a new macro, "command" is not recognized as an alias for
"commands":
(gdb) define breakmain
Type commands for definition of "breakmain".
End with a line saying just "end".
>break main
>command
>echo "IN MAIN\n"
>end
(gdb)
There is a special case for while-stepping, where 'ws' and 'stepping' are
recognized explicitely. Instead of adding more special cases, this change
uses cli-decode.
gdb/ChangeLog:
* cli/cli-decode.c (find_command_name_length): Make it extern.
* cli/cli-decode.h (find_command_name_length): Declare.
* cli/cli-script.c (command_name_equals, line_first_arg):
New functions.
(process_next_line): Use cli-decode to parse command names.
(build_command_line): Make args a constant pointer.
gdb/testsuite/ChangeLog:
* gdb.base/define.exp: Add test for command abbreviations
in define.
Case-insensitive search for command names is an obscure undocumented
feature, which seems to be unused, is not tested and not quite
consistent. Remove it.
gdb/ChangeLog:
* cli-decode.c (lookup_cmd_1, lookup_cmd_composition):
Remove case-insensitive search.
This applies the second part of GDB's End of Year Procedure, which
updates the copyright year range in all of GDB's files.
gdb/ChangeLog:
Update copyright year range in all GDB files.
With this patch, when an inferior, thread or frame is explicitly
selected by the user, notifications will appear on all CLI and MI UIs.
When a GDB console is integrated in a front-end, this allows the
front-end to follow a selection made by the user ont he CLI, and it
informs the user about selection changes made behind the scenes by the
front-end.
This patch addresses PR gdb/20487.
In order to communicate frame changes to the front-end, this patch adds
a new field to the =thread-selected event for the selected frame. The
idea is that since inferior/thread/frame can be seen as a composition,
it makes sense to send them together in the same event. The vision
would be to eventually send the inferior information as well, if we find
that it's needed, although the "=thread-selected" event would be
ill-named for that job.
Front-ends need to handle this new field if they want to follow the
frame selection changes that originate from the console. The format of
the frame attribute is the same as what is found in the *stopped events.
Here's a detailed example for each command and the events they generate:
thread
------
1. CLI command:
thread 1.3
MI event:
=thread-selected,id="3",frame={...}
2. MI command:
-thread-select 3
CLI event:
[Switching to thread 1.3 ...]
3. MI command (CLI-in-MI):
thread 1.3
MI event/reply:
&"thread 1.3\n"
~"#0 child_sub_function () ...
=thread-selected,id="3",frame={level="0",...}
^done
frame
-----
1. CLI command:
frame 1
MI event:
=thread-selected,id="3",frame={level="1",...}
2. MI command:
-stack-select-frame 1
CLI event:
#1 0x00000000004007f0 in child_function...
3. MI command (CLI-in-MI):
frame 1
MI event/reply:
&"frame 1\n"
~"#1 0x00000000004007f9 in ..."
=thread-selected,id="3",frame={level="1"...}
^done
inferior
--------
Inferior selection events only go from the console to MI, since there's
no way to select the inferior in pure MI.
1. CLI command:
inferior 2
MI event:
=thread-selected,id="3"
Note that if the user selects an inferior that is not started or exited,
the MI doesn't receive a notification. Since there is no threads to
select, the =thread-selected event does not apply...
2. MI command (CLI-in-MI):
inferior 2
MI event/reply:
&"inferior 2\n"
~"[Switching to inferior 2 ...]"
=thread-selected,id="4",frame={level="0"...}
^done
Internal implementation detail: this patch makes it possible to suppress
notifications caused by a CLI command, like what is done in mi-interp.c.
This means that it's now possible to use the
add_com_suppress_notification function to register a command with some
event suppressed. It is used to implement the select-frame command in
this patch.
The function command_notifies_uscc_observer was added to extract
the rather complicated logical expression from the if statement. It is
also now clearer what that logic does: if the command used by the user
already notifies the user_selected_context_changed observer, there is
not need to notify it again. It therefore protects again emitting the
event twice.
No regressions, tested on ubuntu 14.04 x86 with target boards unix and
native-extended-gdbserver.
gdb/ChangeLog:
YYYY-MM-DD Antoine Tremblay <antoine.tremblay@ericsson.com>
YYYY-MM-DD Simon Marchi <simon.marchi@ericsson.com>
PR gdb/20487
* NEWS: Mention new frame field of =thread-selected event.
* cli/cli-decode.c (add_cmd): Initialize c->suppress_notification.
(add_com_suppress_notification): New function definition.
(cmd_func): Set and restore the suppress_notification flag.
* cli/cli-deicode.h (struct cmd_list_element)
<suppress_notification>: New field.
* cli/cli-interp.c (cli_suppress_notification): New global variable.
(cli_on_user_selected_context_changed): New function.
(_initialize_cli_interp): Attach to user_selected_context_changed
observer.
* command.h (struct cli_suppress_notification): New structure.
(cli_suppress_notification): New global variable declaration.
(add_com_suppress_notification): New function declaration.
* defs.h (enum user_selected_what_flag): New enum.
(user_selected_what): New enum flag type.
* frame.h (print_stack_frame_to_uiout): New function declaration.
* gdbthread.h (print_selected_thread_frame): New function declaration.
* inferior.c (print_selected_inferior): New function definition.
(inferior_command): Remove printing of inferior/thread/frame switch
notifications, notify user_selected_context_changed observer.
* inferior.h (print_selected_inferior): New function declaration.
* mi/mi-cmds.c (struct mi_cmd): Add user_selected_context
suppression to stack-select-frame and thread-select commands.
* mi/mi-interp.c (struct mi_suppress_notification)
<user_selected_context>: Initialize.
(mi_user_selected_context_changed): New function definition.
(_initialize_mi_interp): Attach to user_selected_context_changed.
* mi/mi-main.c (mi_cmd_thread_select): Print thread selection reply.
(mi_execute_command): Handle notification suppression. Notify
user_selected_context_changed observer on thread change instead of printing
event directly. Don't send it if command already sends the notification.
(command_notifies_uscc_observer): New function.
(mi_cmd_execute): Don't handle notification suppression.
* mi/mi-main.h (struct mi_suppress_notification)
<user_selected_context>: New field.
* stack.c (print_stack_frame_to_uiout): New function definition.
(select_frame_command): Notify user_selected_context_changed
observer.
(frame_command): Call print_selected_thread_frame if there's no frame
change or notify user_selected_context_changed observer if there is.
(up_command): Notify user_selected_context_changed observer.
(down_command): Likewise.
(_initialize_stack): Suppress user_selected_context notification for
command select-frame.
* thread.c (thread_command): Notify
user_selected_context_changed if the thread has changed, print
thread info directly if it hasn't.
(do_captured_thread_select): Do not print thread switch event.
(print_selected_thread_frame): New function definition.
* tui/tui-interp.c (tui_on_user_selected_context_changed):
New function definition.
(_initialize_tui_interp): Attach to user_selected_context_changed
observer.
gdb/doc/ChangeLog:
PR gdb/20487
* gdb.texinfo (Context management): Update mention of frame
change notifications.
(gdb/mi Async Records): Document frame field in
=thread-select event.
* observer.texi (GDB Observers): New user_selected_context_changed
observer.
gdb/testsuite/ChangeLog:
PR gdb/20487
* gdb.mi/mi-pthreads.exp (check_mi_thread_command_set): Adapt
=thread-select-event check.
Just like completion doesn't show deprecated commands, I think that help
should not list them, so that we don't incite users to use them.
gdb/ChangeLog:
* cli/cli-decode.c (help_cmd_list): Do not list commands that
are deprecated.
The 'add_info' function is used for creating info commands, these
commands should be created as 'class_info' rather than 'no_class'.
gdb/ChangeLog:
* cli/cli-decode.c (add_info): Switch to class_info.
In the following code:
struct symbol *wsym = (struct symbol *) NULL;
the cast of NULL is redundant, it adds noise, and is just one more thing
to change if the type of wsym ever changes. There are a relatively
small number of places in gdb where the above code pattern is used.
Usually the cast is removed like this:
struct symbol *wsym = NULL;
This commit updates all the places within the gdb/cli directory where we
cast NULL during assignment, removing the cast.
gdb/ChangeLog:
* cli/cli-decode.c (find_cmd): Remove cast of NULL pointer.
Pedro Alves:
The commands that enables aren't even documented in the manual.
Judging from that, I assume that only wdb users would ever really
be using the --xdb switch.
I think it's time to drop "support" for the --xdb switch too. I
looked through the commands that that exposes, the only that looked
potentially interesting was "go", but then it's just an alias
for "tbreak+jump", which can easily be done with "define go...end".
I'd rather free up the "go" name for something potentially
more interesting (either run control, or maybe even unrelated,
e.g., for golang).
gdb/ChangeLog
2015-04-11 Jan Kratochvil <jan.kratochvil@redhat.com>
* NEWS (Changes since GDB 7.9): Add removed -xdb.
* breakpoint.c (command_line_is_silent): Remove xdb_commands
conditional.
(_initialize_breakpoint): Remove xdb_commands for bc, ab, sb, db, ba
and lb.
* cli/cli-cmds.c (_initialize_cli_cmds): Remove xdb_commands for v and
va.
* cli/cli-decode.c (find_command_name_length): Remove xdb_commands
conditional.
* defs.h (xdb_commands): Remove declaration.
* f-valprint.c (_initialize_f_valprint): Remove xdb_commands for lc.
* guile/scm-cmd.c (command_classes): Remove xdb from comment.
* infcmd.c (run_no_args_command, go_command): Remove.
(_initialize_infcmd): Remove xdb_commands for S, go, g, R and lr.
* infrun.c (xdb_handle_command): Remove.
(_initialize_infrun): Remove xdb_commands for lz and z.
* main.c (xdb_commands): Remove variable.
(captured_main): Remove "xdb" from long_options.
(print_gdb_help): Remove --xdb from help.
* python/py-cmd.c (gdbpy_initialize_commands): Remove xdb from comment.
* source.c (_initialize_source): Remove xdb_commands for D, ld, / and ?.
* stack.c (backtrace_full_command, args_plus_locals_info)
(current_frame_command): Remove.
(_initialize_stack): Remove xdb_commands for t, T and l.
* symtab.c (_initialize_symtab): Remove xdb_commands for lf and lg.
* thread.c (_initialize_thread): Remove xdb_commands condition.
* tui/tui-layout.c (tui_toggle_layout_command)
(tui_toggle_split_layout_command, tui_handle_xdb_layout): Remove.
(_initialize_tui_layout): Remove xdb_commands for td and ts.
* tui/tui-regs.c (tui_scroll_regs_forward_command)
(tui_scroll_regs_backward_command): Remove.
(_initialize_tui_regs): Remove xdb_commands for fr, gr, sr, +r and -r.
* tui/tui-win.c (tui_xdb_set_win_height_command): Remove.
(_initialize_tui_win): Remove xdb_commands for U and w.
* utils.c (pagination_on_command, pagination_off_command): Remove.
(initialize_utils): Remove xdb_commands for am and sm.
gdb/doc/ChangeLog
2015-04-11 Jan Kratochvil <jan.kratochvil@redhat.com>
* gdb.texinfo (Mode Options): Remove -xdb.
This patch renames symbols that happen to have names which are
reserved keywords in C++.
Most of this was generated with Tromey's cxx-conversion.el script.
Some places where later hand massaged a bit, to fix formatting, etc.
And this was rebased several times meanwhile, along with re-running
the script, so re-running the script from scratch probably does not
result in the exact same output. I don't think that matters anyway.
gdb/
2015-02-27 Tom Tromey <tromey@redhat.com>
Pedro Alves <palves@redhat.com>
Rename symbols whose names are reserved C++ keywords throughout.
gdb/gdbserver/
2015-02-27 Tom Tromey <tromey@redhat.com>
Pedro Alves <palves@redhat.com>
Rename symbols whose names are reserved C++ keywords throughout.
have empty bodies.
User-defined commands that have empty bodies weren't being shown because
the print function returned too soon. Now, it prints the command's name
before checking if it has any body at all. This also fixes the same
problem on "show user <myemptycommand>", which wasn't being printed due
to a similar reason.
gdb/Changelog:
* cli/cli-cmds.c (show_user): Use cli_user_command_p to
decide whether we display the command on "show user".
* cli/cli-script.c (show_user_1): Only verify cmdlines after
printing command name.
* cli/cli-decode.h (cli_user_command_p): Declare new function.
* cli/cli-decode.c (cli_user_command_p): Create helper function
to verify whether cmd_list_element is a user-defined command.
gdb/testsuite/Changelog:
* gdb.base/commands.exp: Add tests to verify user-defined
commands with empty bodies.
* gdb.python/py-cmd.exp: Test that we don't show user-defined
python commands in `show user command`.
* gdb.python/scm-cmd.exp: Test that we don't show user-defined
scheme commands in `show user command`.
This PR came from a Red Hat bug that was filed recently. I checked and
it still exists on HEAD, so here's a proposed fix. Although this is
marked as a Python backend bug, this is really about the completion
mechanism used by GDB. Since this code reminds me of my first attempt
to make a good noodle, it took me quite some time to fix it in a
non-intrusive way.
The problem is triggered when one registers a completion method inside a
class in a Python script, rather than registering the command using a
completer class directly. For example, consider the following script:
class MyFirstCommand(gdb.Command):
def __init__(self):
gdb.Command.__init__(self,'myfirstcommand',gdb.COMMAND_USER,gdb.COMPLETE_FILENAME)
def invoke(self,argument,from_tty):
raise gdb.GdbError('not implemented')
class MySecondCommand(gdb.Command):
def __init__(self):
gdb.Command.__init__(self,'mysecondcommand',gdb.COMMAND_USER)
def invoke(self,argument,from_tty):
raise gdb.GdbError('not implemented')
def complete(self,text,word):
return gdb.COMPLETE_FILENAME
MyFirstCommand ()
MySecondCommand ()
When one loads this into GDB and tries to complete filenames for both
myfirstcommand and mysecondcommand, she gets:
(gdb) myfirstcommand /hom<TAB>
(gdb) myfirstcommand /home/
^
...
(gdb) mysecondcommand /hom<TAB>
(gdb) mysecondcommand /home
^
(The "^" marks the final position of the cursor after the TAB).
So we see that myfirstcommand honors the COMPLETE_FILENAME class (as
specified in the command creation), but mysecondcommand does not. After
some investigation, I found that the problem lies with the set of word
break characters that is used for each case. The set should be the same
for both commands, but it is not.
During the process of deciding which type of completion should be used,
the code in gdb/completer.c:complete_line_internal analyses the command
that requested the completion and tries to determine the type of
completion wanted by checking which completion function will be called
(e.g., filename_completer for filenames, location_completer for
locations, etc.).
This all works fine for myfirstcommand, because immediately after the
command registration the Python backend already sets its completion
function to filename_completer (which then causes the
complete_line_internal function to choose the right set of word break
chars). However, for mysecondcommand, this decision is postponed to
when the completer function is evaluated, and the Python backend uses an
internal completer (called cmdpy_completer). complete_line_internal
doesn't know about this internal completer, and can't choose the right
set of word break chars in time, which then leads to a bad decision when
completing the "/hom" word.
So, after a few attempts, I decided to create another callback in
"struct cmd_list_element" that will be responsible for handling the case
when there is an unknown completer function for complete_line_internal
to work with. So far, only the Python backend uses this callback, and
only when the user provides a completer method instead of registering
the command directly with a completer class. I think this is the best
option because it not very intrusive (all the other commands will still
work normally), but especially because the whole completion code is so
messy that it would be hard to fix this without having to redesign
things.
I have regtested this on Fedora 18 x86_64, without regressions. I also
included a testcase.
gdb/ChangeLog:
2014-09-03 Sergio Durigan Junior <sergiodj@redhat.com>
PR python/16699
* cli/cli-decode.c (set_cmd_completer_handle_brkchars): New
function.
(add_cmd): Set "completer_handle_brkchars" to NULL.
* cli/cli-decode.h (struct cmd_list_element)
<completer_handle_brkchars>: New field.
* command.h (completer_ftype_void): New typedef.
(set_cmd_completer_handle_brkchars): New prototype.
* completer.c (set_gdb_completion_word_break_characters): New
function.
(complete_line_internal): Call "completer_handle_brkchars"
callback from command.
* completer.h: Include "command.h".
(set_gdb_completion_word_break_characters): New prototype.
* python/py-cmd.c (cmdpy_completer_helper): New function.
(cmdpy_completer_handle_brkchars): New function.
(cmdpy_completer): Adjust to use cmdpy_completer_helper.
(cmdpy_init): Set completer_handle_brkchars to
cmdpy_completer_handle_brkchars.
gdb/testsuite/ChangeLog:
2014-09-03 Sergio Durigan Junior <sergiodj@redhat.com>
PR python/16699
* gdb.python/py-completion.exp: New file.
* gdb.python/py-completion.py: Likewise.
This constifies deprecate_cmd and the "replacement" field in struct
cmd_list_element.
2014-07-24 Tom Tromey <tromey@redhat.com>
* cli/cli-decode.c (deprecate_cmd): Make "replacement" const.
* cli/cli-decode.h (struct cmd_list_element) <replacement>: Now
const.
* command.h (deprecate_cmd): Update.
* maint.c (maintenance_do_deprecate): Add casts.
Joel Brobecker
Tom Tromey
Andrew Burgess
Pedro Alves
Simon Marchi
Yao Qi
Jerome Guitton
Antoine Tremblay
Jan Kratochvil
Gabriel Krisman Bertazi
Sergio Durigan Junior
Gary Benson
Tom Tromey