I've written a couple of gdb unwinders in Python, and while doing so,
I wanted to find the architecture of the inferior. (In an unwinder in
particular, one can't use the frame's architecture, because there is
no frame.)
This patch adds Inferior.architecture to allow this. Normally I think
I would have chosen an attribute and not a method here, but seeing
that Frame.architecture is a method, I chose a method as well, for
consistency.
gdb/ChangeLog
2018-10-06 Tom Tromey <tom@tromey.com>
PR python/19399:
* python/py-inferior.c: Add "architecture" entry.
(infpy_architecture): New function.
gdb/doc/ChangeLog
2018-10-06 Tom Tromey <tom@tromey.com>
PR python/19399:
* python.texi (Inferiors In Python): Document
Inferior.Architecture.
gdb/testsuite/ChangeLog
2018-10-06 Tom Tromey <tom@tromey.com>
PR python/19399:
* gdb.python/py-inferior.exp: Add architecture test.
In the distant past, there was no distinction between domain_enum and
search_domain. At that point, there were two sets of enumerators in a
single enum -- which is why these were eventually split. This
confusion leaked out to the Python API as well, as noted in
PR python/21765.
This patch deprecates the constants that aren't useful to the Python
API. They are left in place for now, but removed from the
documentation. Also, their values are changed so that, if used, they
might work. Finally, missing domains and location constants are
added.
gdb/ChangeLog
2018-10-06 Tom Tromey <tom@tromey.com>
PR python/21765:
* python/py-symbol.c (gdbpy_initialize_symbols): Redefine
SYMBOL_VARIABLES_DOMAIN, SYMBOL_FUNCTIONS_DOMAIN,
SYMBOL_TYPES_DOMAIN. Define SYMBOL_MODULE_DOMAIN,
SYMBOL_COMMON_BLOCK_DOMAIN, SYMBOL_LOC_COMMON_BLOCK.
gdb/doc/ChangeLog
2018-10-06 Tom Tromey <tom@tromey.com>
PR python/21765:
* python.texi (Symbols In Python): Document the module and
common-block domains. Remove documentation for incorrect
domains.
I noticed today that gdb.Breakpoint.location will crash when applied
to a catchpoint made with "catch throw".
The bug is that "catch throw" makes a breakpoint that is of type
bp_breakpoint, but which does not have a location.
Regression tested on x86-64 Fedora 28.
gdb/ChangeLog
2018-10-06 Tom Tromey <tom@tromey.com>
* python/py-breakpoint.c (bppy_get_location): Handle a
bp_breakpoint without a location.
gdb/testsuite/ChangeLog
2018-10-06 Tom Tromey <tom@tromey.com>
* gdb.python/py-breakpoint.exp (check_last_event): Check location
of a "throw" catchpoint.
Philippe pointed out that the "enable frame-filter" help text looked
funny.
While fixing this I noticed a few more problems in the help text of
commands written in Python:
* Trailing newlines
* Wrong style for metasyntactic variables
* Indentation of the text
* ... and finally, I thought the function usage lines didn't need
that extra newline -- someday I'd like to be able to write a
"usage" command that just greps for the Usage line, so ideally it
would be tighter than what was done here
This patch fixes all the problems I noticed.
gdb/ChangeLog
2018-10-06 Tom Tromey <tom@tromey.com>
* python/lib/gdb/function/strfns.py (_MemEq, _StrLen, _StrEq)
(_RegEx): Reformat help text.
* python/lib/gdb/function/caller_is.py (CallerIs, CallerMatches)
(AnyCallerIs, AnyCallerMatches): Reformat help text.
* python/lib/gdb/function/as_string.py (_AsString): Reformat help
text.
* python/lib/gdb/command/xmethods.py (InfoXMethod)
(EnableXMethod, DisableXMethod): Remove help indentation.
Capitalize meta-syntactic variables.
* python/lib/gdb/command/unwinders.py (InfoUnwinder)
(EnableUnwinder, DisableUnwinder): Remove help indentation.
Capitalize meta-syntactic variables.
* python/lib/gdb/command/explore.py (ExploreCommand)
(ExploreValueCommand, ExploreTypeCommand): Reformat help text.
* python/lib/gdb/command/type_printers.py (InfoTypePrinter)
(EnableTypePrinter, DisableTypePrinter): Remove help indentation.
* python/lib/gdb/command/pretty_printers.py (InfoPrettyPrinter):
Remove help indentation.
(EnablePrettyPrinter, DisablePrettyPrinter): Likewise.
* python/lib/gdb/command/frame_filters.py (EnableFrameFilter)
(DisableFrameFilter, SetFrameFilterPriority)
(ShowFrameFilterPriority, InfoFrameFilter): Reword help text.
When using cpychecker, we run into:
...
gdb/python/py-progspace.c: \
In function ‘PyObject* pspy_solib_name(PyObject*, PyObject*)’:
gdb/python/py-progspace.c:370:25: error: Mismatching type in call to \
PyArg_ParseTuple with format code "K" [-Werror]
if (!PyArg_ParseTuple (args, GDB_PY_LLU_ARG, &pc))
argument 3 ("&pc") had type
"gdb_py_longest *" (pointing to 64 bits)
but was expecting
"long long unsigned int *" (pointing to 64 bits)
for format code "K"
...
Fix this fixing the type of the variable.
Build and reg-tested on x86_64-linux.
2018-10-05 Tom de Vries <tdevries@suse.de>
* python/py-progspace.c (pspy_solib_name): Fix type mismatch in
PyArg_ParseTuple call.
When using cpychecker, we run into this error:
...
gdb/python/py-record-btrace.c: \
In function ‘PyObject* recpy_bt_goto(PyObject*, PyObject*)’:
gdb/python/py-record-btrace.c:783:25: error: Mismatching type in call to \
PyArg_ParseTuple with format code "O" [-Werror]
if (!PyArg_ParseTuple (args, "O", &obj))
argument 3 ("&obj") had type
"const struct recpy_element_object * *"
but was expecting
"struct PyObject * *"
for format code "O"
...
Fix this by using a new variable of the expected type instead.
Build and reg-tested on x86_64-linux.
2018-10-05 Tom de Vries <tdevries@suse.de>
* python/py-record-btrace.c (recpy_bt_goto): Fix type mismatch in
PyArg_ParseTuple call.
A convention in the Python layer is that raising a gdb.GdbError will
not print the Python stack -- instead the exception is treated as any
other gdb exception.
PR python/18852 asks that this treatment be extended the the
get_set_value method of gdb.Parameter. This makes sense, because it
lets Python-created parameters act like gdb parameters.
2018-09-23 Tom Tromey <tom@tromey.com>
PR python/18852:
* python/py-param.c (get_set_value): Use gdbpy_handle_exception.
gdb/doc/ChangeLog
2018-09-23 Tom Tromey <tom@tromey.com>
PR python/18852:
* python.texi (Parameters In Python): Document exception behavior
of get_set_string.
gdb/testsuite/ChangeLog
2018-09-23 Tom Tromey <tom@tromey.com>
PR python/18852:
* gdb.python/py-parameter.exp: Add test for parameter that throws
on "set".
I noticed two nearly identical copies of the same code for handling
gdb.GdbError. The only differences were in some error messages.
These differences didn't seem very important, so this patch pulls the
code out into a new function.
2018-09-23 Tom Tromey <tom@tromey.com>
* python/py-function.c (fnpy_call): Use gdbpy_handle_exception.
* python/py-cmd.c (cmdpy_function): Use gdbpy_handle_exception.
* python/python-internal.h (gdbpy_handle_exception): Declare.
* python/py-utils.c (gdbpy_handle_exception): New function.
typy_template_argument did not check if the template argument was
non-negative. A negative value could cause a gdb crash.
2018-09-23 Tom Tromey <tom@tromey.com>
PR python/17284:
* python/py-type.c (typy_template_argument): Check for negative
argument number.
gdb/testsuite/ChangeLog
2018-09-23 Tom Tromey <tom@tromey.com>
PR python/17284:
* gdb.python/py-template.exp (test_template_arg): Add test for
negative template argument number.
PR python/14062 points out that errors coming from the gdb.post_event
callback are not reported. This can make it hard to understand why
your Python code in gdb isn't working.
Because users have control over whether exceptions are printed at all,
it seems good to simply have post_event report errors in the usual
way.
2018-09-23 Tom Tromey <tom@tromey.com>
PR python/14062:
* python/python.c (gdbpy_run_events): Do not ignore exceptions.
gdb/testsuite/ChangeLog
2018-09-23 Tom Tromey <tom@tromey.com>
PR python/14062:
* gdb.python/python.exp: Add test for post_event error.
PR python/18170 questions why it's not possible to convert a pointer
value to a Python int.
Digging a bit shows that the Python 2.7 int() constructor will happily
return a long in some cases. And, it seems gdb already understands
this in other places -- this is what gdb_py_object_from_longest
handles.
So, this patch simply extends valpy_int to allow pointer conversions,
as valpy_long does.
gdb/ChangeLog
2018-09-23 Tom Tromey <tom@tromey.com>
PR python/18170:
* python/py-value.c (valpy_int): Allow conversion from pointer
type.
gdb/testsuite/ChangeLog
2018-09-23 Tom Tromey <tom@tromey.com>
PR python/18170:
* gdb.python/py-value.exp (test_value_numeric_ops): Add tests to
convert pointers to int and long.
PR python/20126 points out that sometimes the conversion of a
gdb.Value can result in a negative Python integer. This happens
because valpy_int does not examine the signedness of the value's type.
gdb/ChangeLog
2018-09-23 Tom Tromey <tom@tromey.com>
PR python/20126:
* python/py-value.c (valpy_int): Respect type sign.
gdb/testsuite/ChangeLog
2018-09-23 Tom Tromey <tom@tromey.com>
PR python/20126:
* gdb.python/py-value.exp (test_value_numeric_ops): Add
signed-ness conversion tests.
PR python/18352 points out that the gdb Python code can't convert an
integer-valued gdb.Value to a Python float. While writing the test I
noticed that, similarly, converting integer gdb.Values to float does
not work. However, all of these cases seem reasonable.
gdb/ChangeLog
2018-09-23 Tom Tromey <tom@tromey.com>
PR python/18352;
* python/py-value.c (valpy_float): Allow conversions from int or
char.
(valpy_int, valpy_long): Allow conversions from float.
gdb/testsuite/ChangeLog
2018-09-23 Tom Tromey <tom@tromey.com>
PR python/18352;
* gdb.python/py-value.exp (test_float_conversion): New proc.
Use it.
Without the patch:
(gdb) apropos able frame-filter
disable frame-filter -- GDB command to disable the specified frame-filter
enable frame-filter -- GDB command to disable the specified frame-filter
With the patch:
(gdb) apropos able frame-filter
disable frame-filter -- GDB command to disable the specified frame-filter
enable frame-filter -- GDB command to enable the specified frame-filter
Pushed as obvious
Commit 00431a78b2 ("Use thread_info and inferior pointers more
throughout") removed the declaration of find_inferior_object, but
missed removing the definition.
gdb/ChangeLog:
2018-09-17 Pedro Alves <palves@redhat.com>
* python/py-inferior.c (find_inferior_object): Delete.
Since commit
56bcdbea2b ("Let gdb.execute handle multi-line commands")
trying to use a command like gdb.execute("show commands") in Python
fails. GDB ends up trying to run the "commands" command.
The reason is that GDB gets confused with the special "commands"
command. In process_next_line, the lookup_cmd_1 function returns the
cmd_list_element representing the "commands" sub-command of "show".
Lower, we check the cmd_list_element to see if it matches various
control commands by name, including the "commands" command. This is
where we wrongfully conclude that the executed command must be
"commands", when in reality it was "show commands".
The fix proposed in this patch removes the comparisons by name, instead
comparing the cmd_list_element object by pointer with the objects
created at initialization time.
Tested on the buildbot, though on a single builder (Fedora-x86_64-m64).
gdb/ChangeLog:
PR python/23669
* breakpoint.c (commands_cmd_element): New.
(_initialize_breakpoint): Assign commands_cmd_element.
* breakpoint.h (commands_cmd_element): New.
* cli/cli-script.c (while_cmd_element, if_command,
define_cmd_element): New.
(command_name_equals): Remove.
(process_next_line): Compare commands by pointer, not by name.
(_initialize_cli_script): Assign the various cmd_list_element
variables.
* compile/compile.c (compile_cmd_element): New.
(_initialize_compile): Assign compile_cmd_element.
* compile/compile.h (compile_cmd_element): New.
* guile/guile.c (guile_cmd_element): New.
(install_gdb_commands): Assign guile_cmd_element.
* guile/guile.h (guile_cmd_element): New.
* python/python.c (python_cmd_element): New.
(_initialize_python): Assign python_cmd_element.
* python/python.h (python_cmd_element): New.
* tracepoint.c (while_stepping_cmd_element): New.
(_initialize_tracepoint): Assign while_stepping_cmd_element.
* tracepoint.h (while_stepping_cmd_element): New.
gdb/testsuite/ChangeLog:
PR python/23669
* gdb.python/python.exp: Test gdb.execute("show commands").
Some Python APIs steal references from their caller, and the refcount
checker supports this via an attribute.
However, in gdb with C++ we have a better idiom available: we can use
std::move on a gdbpy_ref<> instead. This makes the semantics obvious
at the point of call, and is safer at runtime as well, because the
callee's gdbpy_ref<> will be emptied.
This patch changes the reference-stealing code in gdb to use rvalue
references instead.
Tested on x86-64 Fedora 28.
gdb/ChangeLog
2018-09-16 Tom Tromey <tom@tromey.com>
* python/python-internal.h (CPYCHECKER_STEALS_REFERENCE_TO_ARG):
Remove.
* python/py-varobj.c (py_varobj_iter_ctor): Change pyiter to
rvalue reference. Remove CPYCHECKER_STEALS_REFERENCE_TO_ARG.
(py_varobj_iter_new): Likewise.
(py_varobj_get_iterator): Use gdbpy_ref.
An review by Simon of an earlier showed a few spots related to
thread_to_thread_object that could be simplified. This also detected
a latent bug, where thread_to_thread_object was inconsistent about
setting the Python exception before a NULL return.
Tested on x86-64 Fedora 28.
gdb/ChangeLog
2018-09-16 Tom Tromey <tom@tromey.com>
* python/py-threadevent.c (py_get_event_thread): Simplify.
* python/py-inferior.c (infpy_thread_from_thread_handle):
Return immediately after calling thread_to_thread_object. Use
Py_RETURN_NONE.
(thread_to_thread_object): Set the exception on a NULL return.
CPYCHECKER_RETURNS_BORROWED_REF is not used, and I think should never
be used. This patch removes it.
gdb/ChangeLog
2018-09-16 Tom Tromey <tom@tromey.com>
* python/python-internal.h (CPYCHECKER_RETURNS_BORROWED_REF):
Remove.
This changes thread_to_thread_object to return a new reference and
fixes up all the callers.
gdb/ChangeLog
2018-09-16 Tom Tromey <tom@tromey.com>
* python/python-internal.h (thread_to_thread_object): Change
return type.
* python/py-inferior.c (thread_to_thread_object): Return a new
reference.
(infpy_thread_from_thread_handle): Update.
* python/py-infthread.c (gdbpy_selected_thread): Update.
* python/py-stopevent.c (create_stop_event_object): Update.
* python/py-threadevent.c (py_get_event_thread): Return a new
reference.
(py_get_event_thread): Update.
* python/py-event.h (py_get_event_thread): Change return type.
* python/py-continueevent.c (create_continue_event_object):
Update.
This changes pspace_to_pspace_object to return a new reference and
fixes up all the callers.
gdb/ChangeLog
2018-09-16 Tom Tromey <tom@tromey.com>
* python/py-inferior.c (infpy_get_progspace): Update.
* python/python-internal.h (pspace_to_pspace_object): Change
return type.
* python/py-newobjfileevent.c
(create_clear_objfiles_event_object): Update.
* python/py-xmethods.c (gdbpy_get_matching_xmethod_workers):
Update.
* python/python.c (gdbpy_get_current_progspace): Update.
(gdbpy_progspaces): Update.
* python/py-progspace.c (pspace_to_pspace_object): Return a new
reference.
* python/py-objfile.c (objfpy_get_progspace): Update.
* python/py-prettyprint.c (find_pretty_printer_from_progspace):
Update.
There are a number of global functions in the gdb Python module which
really should be methods on Progspace. This patch adds new methods to
Progspace and then redefines these globals in terms of these new
methods.
This version has been rebased on the related changes that Simon
recently put in.
Built and regtested on x86-64 Fedora 28.
gdb/ChangeLog
2018-09-16 Tom Tromey <tom@tromey.com>
* python/lib/gdb/__init__.py (current_progspace, objfiles)
(solib_name, block_for_pc, find_pc_line): New functions.
(execute_unwinders): Update.
* python/py-block.c (gdbpy_block_for_pc): Remove.
* python/py-inferior.c (infpy_get_progspace): New function.
(inferior_object_getset) <progspace>: Add.
* python/py-progspace.c (pspy_objfiles): Rewrite.
(pspy_solib_name, pspy_block_for_pc)
(pspy_find_pc_line, pspy_is_valid): New functions.
(progspace_object_methods): Add entries for solib_name,
block_for_pc, find_pc_line, is_valid.
* python/python-internal.h (gdbpy_block_for_pc)
(build_objfiles_list): Don't declare.
* python/python.c: Don't include solib.h.
(gdbpy_solib_name, gdbpy_find_pc_line)
(gdbpy_get_current_progspace, build_objfiles_list)
(gdbpy_objfiles): Remove.
(GdbMethods) <current_progspace, objfiles, block_for_pc,
solib_name, find_pc_line>: Remove entries.
gdb/doc/ChangeLog
2018-09-16 Tom Tromey <tom@tromey.com>
* python.texi (Basic Python): Update docs for find_pc_line,
solib_name.
(Progspaces In Python): Update docs for current_progspace.
Document block_for_pc, find_pc_line, is_valid, nsolib_name.
Move method documentation before example.
In the Python code, gdb exceptions may not leak into the Python core.
execute_gdb_command was calling bpstat_do_actions outside of a
TRY/CATCH; which seemed risky. I don't have a test case for this, but
if bpstat_do_actions could ever throw, it could crash gdb.
This patch introduces a new scope in order to preserve the current
semantics, so it is looks a bit bigger than it really is.
Tested on x86-64 Fedora 28.
gdb/ChangeLog
2018-09-07 Tom Tromey <tom@tromey.com>
* python/python.c (execute_gdb_command): Call bpstat_do_actions
inside the TRY.
I noticed that infpy_thread_from_thread_handle is not static, but
should be. This patch changes it.
gdb/ChangeLog
2018-09-13 Tom Tromey <tom@tromey.com>
* python/py-inferior.c (infpy_thread_from_thread_handle): Now
static.
This patch adds an objfiles method to the Progspace object, which
returns a sequence of the objfiles associated to that program space. I
chose a method rather than a property for symmetry with gdb.objfiles().
gdb/ChangeLog:
* python/py-progspace.c (PSPY_REQUIRE_VALID): New macro.
(pspy_get_objfiles): New function.
(progspace_object_methods): New.
(pspace_object_type): Add tp_methods callback.
* python/python-internal.h (build_objfiles_list): New
declaration.
* python/python.c (build_objfiles_list): New function.
(gdbpy_objfiles): Implement using build_objfiles_list.
* NEWS: Mention the Progspace.objfiles method.
gdb/doc/ChangeLog:
* python.texi (Program Spaces In Python): Document the
Progspace.objfiles method.
(Objfiles In Python): Mention that gdb.objfiles() is identical
to gdb.selected_inferior().progspace.objfiles().
gdb/testsuite/ChangeLog:
* gdb.python/py-progspace.exp: Test the Progspace.objfiles
method.
This patch adds a progspace property to the gdb.Inferior type, which
allows getting the gdb.Progspace object associated to that inferior.
In conjunction with the following patch, this will allow scripts iterate
on objfiles associated with a particular inferior.
gdb/ChangeLog:
* python/py-inferior.c (infpy_get_progspace): New function.
(inferior_object_getset): Add progspace property.
* NEWS: Mention the new property.
gdb/doc/ChangeLog:
* python.texi (Inferiors In Python): Document
Inferior.progspace.
(Program Spaces In Python): Document that
gdb.current_progspace() is the same as
gdb.selected_inferior().progspace.
gdb/testsuite/ChangeLog:
* gdb.python/py-inferior.exp: Add tests for Inferior.progspace
and a few other Inferior properties when the Inferior is no
longer valid.
Printing a GDB Python object is notoriously not helpful:
>>> print(gdb.selected_inferior())
<gdb.Inferior object at 0x7fea59aed198>
>>> print(gdb.objfiles())
[<gdb.Objfile object at 0x7fea59b57c90>]
This makes printing debug traces more difficult than it should be. This
patch provides some repr() implementation for these two types (more to
come if people agree with the idea, but I want to test the water first).
Here's the same example as above, but with this patch:
>>> print(gdb.selected_inferior())
<gdb.Inferior num=1>
>>> print(gdb.objfiles())
[<gdb.Objfile filename=/home/emaisin/build/binutils-gdb-gcc-git/gdb/test>]
I implemented repr rather than str, because when printing a list (or
another container I suppose), Python calls the repr method of the
elements. This is useful when printing a list of inferiors or objfiles.
The print(gdb.objfiles()) above would not have worked if I had
implemented str.
I found this post useful to understand the difference between repr and
str:
https://stackoverflow.com/questions/1436703/difference-between-str-and-repr
gdb/ChangeLog:
* python/py-inferior.c (infpy_repr): New.
(inferior_object_type): Register infpy_repr.
* python/py-objfile.c (objfpy_repr): New.
(objfile_object_type): Register objfpy_repr.
gdb/testsuite/ChangeLog:
* gdb.python/py-inferior.exp: Test repr() of gdb.Inferior.
* gdb.python/py-objfile.exp: Test repr() of gdb.Objfile.
* gdb.python/py-symtab.exp: Update test printing an objfile.
gdb/doc/ChangeLog:
* python.texi (Basic Python): Mention the string representation
of GDB Python objects.
PR python/18380 points out that the example in the "help python" text
will only work in Python 2. This changes the example to be valid
syntax for both Python 2 and Python 3.
gdb/ChangeLog
2018-09-10 Tom Tromey <tom@tromey.com>
PR python/18380:
* python/python.c (_initialize_python): Make example in "python"
help work in Python 3.
I noticed that we release a gdbpy_ref in pretty_print_one_value only to
create it again later. This patch fills the gap by returning a
gdbpy_ref all the way.
gdb/ChangeLog:
* python/py-prettyprint.c (pretty_print_one_value): Return
gdbpy_ref<>.
(print_string_repr): Adjust.
(apply_varobj_pretty_printer): Return gdbpy_ref<>.
* python/python-internal.h (apply_varobj_pretty_printer): Return
gdbpy_ref<>.
* varobj.c (varobj_value_get_print_value): Adjust.
PR python/16047 points out that, while the documentation says that the
to_string method is optional for a pretty-printer, the code disagrees
and throws an exception. This patch fixes the problem. varobj is
already ok here.
Tested on x86-64 Fedora 26.
gdb/ChangeLog
2018-09-08 Tom Tromey <tom@tromey.com>
PR python/16047:
* python/py-prettyprint.c (pretty_print_one_value): Check for
to_string method.
gdb/testsuite/ChangeLog
2018-09-08 Tom Tromey <tom@tromey.com>
PR python/16047:
* gdb.python/py-prettyprint.py (pp_int_typedef3): New class.
(register_pretty_printers): Register new printer.
* gdb.python/py-prettyprint.exp (run_lang_tests): Add int_type3
test.
* gdb.python/py-prettyprint.c (int_type3): New typedef.
(an_int_type3): New global.
Commit 6d52907e22 (MI: Print frame architecture when printing frames
on an MI channel) added frame's architecture to MI frame output. However
the frame architecture was not correctly printed in the output of
"-stack-list-frames" with frame filters enabled (via "-enable-frame-filters").
This was because with frame filters enabled, the actual frame printing is
done in "py_print_frame" rather than "print_frame". This issue is now fixed.
gdb/Changelog:
2018-08-27 Jan Vrany <jan.vrany@fit.cvut.cz>
* python/py-framefilter.c (py_print_frame): Print frame architecture
when printing on an MI output.
gdb/testsuite/Changelog:
2018-08-27 Jan Vrany <jan.vrany@fit.cvut.cz>
* gdb.python/py-framefilter-mi.exp: Update regexp to
check for "arch" field in frame output.
The pythread variable could be used without being initialized, fix it by
initializing it to nullptr.
gdb/ChangeLog:
* python/py-threadevent.c (py_get_event_thread): Initialize
pythread.
gdb/ChangeLog:
2018-08-24 Pedro Alves <palves@redhat.com>
* python/py-bpevent.c (create_breakpoint_event_object): Use
copy-initialization.
* python/py-continueevent.c (emit_continue_event): Use
copy-initialization.
* python/py-exitedevent.c (create_exited_event_object): Return a
gdbpy_ref<>.
(emit_exited_event): Use copy-initialization.
* python/py-inferior.c (python_new_inferior)
(python_inferior_deleted, add_thread_object): Use
copy-initialization.
* python/py-infevents.c (create_inferior_call_event_object)
(create_register_changed_event_object)
(create_memory_changed_event_object): Return a gdbpy_ref<>.
(emit_inferior_call_event, emit_memory_changed_event)
(emit_register_changed_event): Use copy-initialization.
* python/py-newobjfileevent.c (create_new_objfile_event_object):
Return a gdbpy_ref<>.
(emit_new_objfile_event): Use copy-initialization.
(create_clear_objfiles_event_object): Return a gdbpy_ref<>.
(emit_clear_objfiles_event): Use copy-initialization.
* python/py-signalevent.c (create_signal_event_object): Use
copy-initialization.
* python/py-threadevent.c (create_thread_event_object): Use
copy-initialization.
This commit fixes a 8.1->8.2 regression exposed by
gdb.python/py-evthreads.exp when testing with
--target_board=native-gdbserver.
gdb.log shows:
src/gdb/thread.c:93: internal-error: thread_info* inferior_thread(): Assertion `tp' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n) FAIL: gdb.python/py-evthreads.exp: run to breakpoint 1 (GDB internal error)
A backtrace shows (frames #2 and #10 highlighted) that the assertion
fails when GDB is setting up the connection to the remote target, in
non-stop mode:
#0 0x0000000000622ff0 in internal_error(char const*, int, char const*, ...) (file=0xc1ad98 "src/gdb/thread.c", line=93, fmt=0xc1ad20 "%s: Assertion `%s' failed.") at src/gdb/common/errors.c:54
#1 0x000000000089567e in inferior_thread() () at src/gdb/thread.c:93
= #2 0x00000000004da91d in get_event_thread() () at src/gdb/python/py-threadevent.c:38
#3 0x00000000004da9b7 in create_thread_event_object(_typeobject*, _object*) (py_type=0x11574c0 <continue_event_object_type>, thread=0x0)
at src/gdb/python/py-threadevent.c:60
#4 0x00000000004bf6fe in create_continue_event_object() () at src/gdb/python/py-continueevent.c:27
#5 0x00000000004bf738 in emit_continue_event(ptid_t) (ptid=...) at src/gdb/python/py-continueevent.c:40
#6 0x00000000004c7d47 in python_on_resume(ptid_t) (ptid=...) at src/gdb/python/py-inferior.c:108
#7 0x0000000000485bfb in std::_Function_handler<void (ptid_t), void (*)(ptid_t)>::_M_invoke(std::_Any_data const&, ptid_t&&) (__functor=..., __args#0=...) at /usr/include/c++/7/bits/std_function.h:316
#8 0x000000000089b416 in std::function<void (ptid_t)>::operator()(ptid_t) const (this=0x12aa600, __args#0=...)
at /usr/include/c++/7/bits/std_function.h:706
#9 0x000000000089aa0e in gdb::observers::observable<ptid_t>::notify(ptid_t) const (this=0x118a7a0 <gdb::observers::target_resumed>, args#0=...)
at src/gdb/common/observable.h:106
= #10 0x0000000000896fbe in set_running(ptid_t, int) (ptid=..., running=1) at src/gdb/thread.c:880
#11 0x00000000007f750f in remote_target::remote_add_thread(ptid_t, bool, bool) (this=0x12c5440, ptid=..., running=true, executing=true) at src/gdb/remote.c:2434
#12 0x00000000007f779d in remote_target::remote_notice_new_inferior(ptid_t, int) (this=0x12c5440, currthread=..., executing=1)
at src/gdb/remote.c:2515
#13 0x00000000007f9c44 in remote_target::update_thread_list() (this=0x12c5440) at src/gdb/remote.c:3831
#14 0x00000000007fb922 in remote_target::start_remote(int, int) (this=0x12c5440, from_tty=0, extended_p=0)
at src/gdb/remote.c:4655
#15 0x00000000007fd102 in remote_target::open_1(char const*, int, int) (name=0x1a4f45e "localhost:2346", from_tty=0, extended_p=0)
at src/gdb/remote.c:5638
#16 0x00000000007fbec1 in remote_target::open(char const*, int) (name=0x1a4f45e "localhost:2346", from_tty=0)
at src/gdb/remote.c:4862
So on frame #10, we're marking a newly-discovered thread as running,
and that causes the Python API to emit a gdb.ContinueEvent.
gdb.ContinueEvent is a gdb.ThreadEvent, and as such includes the event
thread as the "inferior_thread" attribute. The problem is that when
we get to frame #3/#4, we lost all references to the thread that is
being marked as running. create_continue_event_object assumes that it
is the current thread, which is not true in this case.
Fix this by passing down the right thread in
create_continue_event_object. Also remove
create_thread_event_object's default argument and have the only other
caller left pass down the right thread explicitly too.
gdb/ChangeLog:
2018-08-24 Pedro Alves <palves@redhat.com>
Simon Marchi <simon.marchi@ericsson.com>
PR gdb/23379
* python/py-continueevent.c: Include "gdbthread.h".
(create_continue_event_object): Add intro comment. Add 'ptid'
parameter. Use it to find thread to pass to
create_thread_event_object.
(emit_continue_event): Pass PTID down to
create_continue_event_object.
* python/py-event.h (py_get_event_thread): Declare.
(create_thread_event_object): Remove default from 'thread'
parameter.
* python/py-stopevent.c (create_stop_event_object): Use
py_get_event_thread.
* python/py-threadevent.c (get_event_thread): Rename to ...
(py_get_event_thread): ... this, make extern, add 'ptid' parameter
and use it to find the thread.
(create_thread_event_object): Assert that THREAD isn't null.
Don't find the event thread here.
This removes some unused variables, and replaces the calls to
value_contents_for_printing with a call to value_fetch_lazy, when
needed.
gdb/ChangeLog
2018-07-22 Tom Tromey <tom@tromey.com>
* python/py-prettyprint.c (gdbpy_apply_val_pretty_printer): Remove
unused variable. Call value_fetch_lazy when needed.
* guile/scm-pretty-print.c (gdbscm_apply_val_pretty_printer):
Remove unused variable. Call value_fetch_lazy when needed.
This removes a use of VEC from py-unwind.c, replacing it wit
std::vector. It also changes saved_regs to hold a gdbpy_ref<>,
simplifying the memory management.
Tested against gdb.python on x86-64 Fedora 26.
gdb/ChangeLog
2018-06-27 Tom Tromey <tom@tromey.com>
* python/py-unwind.c (unwind_info_object) <saved_regs>: Now a
std::vector.
(unwind_infopy_str, pyuw_create_unwind_info)
(unwind_infopy_add_saved_register, pyuw_sniffer)
(unwind_infopy_dealloc, unwind_infopy_add_saved_register):
Update.
(struct saved_reg): Add constructor.
<value>: Now a gdbpy_ref<>.
This is more preparation bits for multi-target support.
In a multi-target scenario, we need to address the case of different
processes/threads running on different targets that happen to have the
same PID/PTID. E.g., we can have both process 123 in target 1, and
process 123 in target 2, while they're in reality different processes
running on different machines. Or maybe we've loaded multiple
instances of the same core file. Etc.
To address this, in my WIP multi-target branch, threads and processes
are uniquely identified by the (process_stratum target_ops *, ptid_t)
and (process_stratum target_ops *, pid) tuples respectively. I.e.,
each process_stratum instance has its own thread/process number space.
As you can imagine, that requires passing around target_ops * pointers
in a number of functions where we're currently passing only a ptid_t
or an int. E.g., when we look up a thread_info object by ptid_t in
find_thread_ptid, the ptid_t alone isn't sufficient.
In many cases though, we already have the thread_info or inferior
pointer handy, but we "lose" it somewhere along the call stack, only
to look it up again by ptid_t/pid. Since thread_info or inferior
objects know their parent target, if we pass around thread_info or
inferior pointers when possible, we avoid having to add extra
target_ops parameters to many functions, and also, we eliminate a
number of by ptid_t/int lookups.
So that's what this patch does. In a bit more detail:
- Changes a number of functions and methods to take a thread_info or
inferior pointer instead of a ptid_t or int parameter.
- Changes a number of structure fields from ptid_t/int to inferior or
thread_info pointers.
- Uses the inferior_thread() function whenever possible instead of
inferior_ptid.
- Uses thread_info pointers directly when possible instead of the
is_running/is_stopped etc. routines that require a lookup.
- A number of functions are eliminated along the way, such as:
int valid_gdb_inferior_id (int num);
int pid_to_gdb_inferior_id (int pid);
int gdb_inferior_id_to_pid (int num);
int in_inferior_list (int pid);
- A few structures and places hold a thread_info pointer across
inferior execution, so now they take a strong reference to the
(refcounted) thread_info object to avoid the thread_info pointer
getting stale. This is done in enable_thread_stack_temporaries and
in the infcall.c code.
- Related, there's a spot in infcall.c where using a RAII object to
handle the refcount would be handy, so a gdb::ref_ptr specialization
for thread_info is added (thread_info_ref, in gdbthread.h), along
with a gdb_ref_ptr policy that works for all refcounted_object types
(in common/refcounted-object.h).
gdb/ChangeLog:
2018-06-21 Pedro Alves <palves@redhat.com>
* ada-lang.h (ada_get_task_number): Take a thread_info pointer
instead of a ptid_t. All callers adjusted.
* ada-tasks.c (ada_get_task_number): Likewise. All callers
adjusted.
(print_ada_task_info, display_current_task_id, task_command_1):
Adjust.
* breakpoint.c (watchpoint_in_thread_scope): Adjust to use
inferior_thread.
(breakpoint_kind): Adjust.
(remove_breakpoints_pid): Rename to ...
(remove_breakpoints_inf): ... this. Adjust to take an inferior
pointer. All callers adjusted.
(bpstat_clear_actions): Use inferior_thread.
(get_bpstat_thread): New.
(bpstat_do_actions): Use it.
(bpstat_check_breakpoint_conditions, bpstat_stop_status): Adjust
to take a thread_info pointer. All callers adjusted.
(set_longjmp_breakpoint_for_call_dummy, set_momentary_breakpoint)
(breakpoint_re_set_thread): Use inferior_thread.
* breakpoint.h (struct inferior): Forward declare.
(bpstat_stop_status): Update.
(remove_breakpoints_pid): Delete.
(remove_breakpoints_inf): New.
* bsd-uthread.c (bsd_uthread_target::wait)
(bsd_uthread_target::update_thread_list): Use find_thread_ptid.
* btrace.c (btrace_add_pc, btrace_enable, btrace_fetch)
(maint_btrace_packet_history_cmd)
(maint_btrace_clear_packet_history_cmd): Adjust.
(maint_btrace_clear_cmd, maint_info_btrace_cmd): Adjust to use
inferior_thread.
* cli/cli-interp.c: Include "inferior.h".
* common/refcounted-object.h (struct
refcounted_object_ref_policy): New.
* compile/compile-object-load.c: Include gdbthread.h.
(store_regs): Use inferior_thread.
* corelow.c (core_target::close): Use current_inferior.
(core_target_open): Adjust to use first_thread_of_inferior and use
the current inferior.
* ctf.c (ctf_target::close): Adjust to use current_inferior.
* dummy-frame.c (dummy_frame_id) <ptid>: Delete, replaced by ...
<thread>: ... this new field. All references adjusted.
(dummy_frame_pop, dummy_frame_discard, register_dummy_frame_dtor):
Take a thread_info pointer instead of a ptid_t.
* dummy-frame.h (dummy_frame_push, dummy_frame_pop)
(dummy_frame_discard, register_dummy_frame_dtor): Take a
thread_info pointer instead of a ptid_t.
* elfread.c: Include "inferior.h".
(elf_gnu_ifunc_resolver_stop, elf_gnu_ifunc_resolver_return_stop):
Use inferior_thread.
* eval.c (evaluate_subexp): Likewise.
* frame.c (frame_pop, has_stack_frames, find_frame_sal): Use
inferior_thread.
* gdb_proc_service.h (struct thread_info): Forward declare.
(struct ps_prochandle) <ptid>: Delete, replaced by ...
<thread>: ... this new field. All references adjusted.
* gdbarch.h, gdbarch.c: Regenerate.
* gdbarch.sh (get_syscall_number): Replace 'ptid' parameter with a
'thread' parameter. All implementations and callers adjusted.
* gdbthread.h (thread_info) <set_running>: New method.
(delete_thread, delete_thread_silent): Take a thread_info pointer
instead of a ptid.
(global_thread_id_to_ptid, ptid_to_global_thread_id): Delete.
(first_thread_of_process): Delete, replaced by ...
(first_thread_of_inferior): ... this new function. All callers
adjusted.
(any_live_thread_of_process): Delete, replaced by ...
(any_live_thread_of_inferior): ... this new function. All callers
adjusted.
(switch_to_thread, switch_to_no_thread): Declare.
(is_executing): Delete.
(enable_thread_stack_temporaries): Update comment.
<enable_thread_stack_temporaries>: Take a thread_info pointer
instead of a ptid_t. Incref the thread.
<~enable_thread_stack_temporaries>: Decref the thread.
<m_ptid>: Delete
<m_thr>: New.
(thread_stack_temporaries_enabled_p, push_thread_stack_temporary)
(get_last_thread_stack_temporary)
(value_in_thread_stack_temporaries, can_access_registers_thread):
Take a thread_info pointer instead of a ptid_t. All callers
adjusted.
* infcall.c (get_call_return_value): Use inferior_thread.
(run_inferior_call): Work with thread pointers instead of ptid_t.
(call_function_by_hand_dummy): Work with thread pointers instead
of ptid_t. Use thread_info_ref.
* infcmd.c (proceed_thread_callback): Access thread's state
directly.
(ensure_valid_thread, ensure_not_running): Use inferior_thread,
access thread's state directly.
(continue_command): Use inferior_thread.
(info_program_command): Use find_thread_ptid and access thread
state directly.
(proceed_after_attach_callback): Use thread state directly.
(notice_new_inferior): Take a thread_info pointer instead of a
ptid_t. All callers adjusted.
(exit_inferior): Take an inferior pointer instead of a pid. All
callers adjusted.
(exit_inferior_silent): New.
(detach_inferior): Delete.
(valid_gdb_inferior_id, pid_to_gdb_inferior_id)
(gdb_inferior_id_to_pid, in_inferior_list): Delete.
(detach_inferior_command, kill_inferior_command): Use
find_inferior_id instead of valid_gdb_inferior_id and
gdb_inferior_id_to_pid.
(inferior_command): Use inferior and thread pointers.
* inferior.h (struct thread_info): Forward declare.
(notice_new_inferior): Take a thread_info pointer instead of a
ptid_t. All callers adjusted.
(detach_inferior): Delete declaration.
(exit_inferior, exit_inferior_silent): Take an inferior pointer
instead of a pid. All callers adjusted.
(gdb_inferior_id_to_pid, pid_to_gdb_inferior_id, in_inferior_list)
(valid_gdb_inferior_id): Delete.
* infrun.c (follow_fork_inferior, proceed_after_vfork_done)
(handle_vfork_child_exec_or_exit, follow_exec): Adjust.
(struct displaced_step_inferior_state) <pid>: Delete, replaced by
...
<inf>: ... this new field.
<step_ptid>: Delete, replaced by ...
<step_thread>: ... this new field.
(get_displaced_stepping_state): Take an inferior pointer instead
of a pid. All callers adjusted.
(displaced_step_in_progress_any_inferior): Adjust.
(displaced_step_in_progress_thread): Take a thread pointer instead
of a ptid_t. All callers adjusted.
(displaced_step_in_progress, add_displaced_stepping_state): Take
an inferior pointer instead of a pid. All callers adjusted.
(get_displaced_step_closure_by_addr): Adjust.
(remove_displaced_stepping_state): Take an inferior pointer
instead of a pid. All callers adjusted.
(displaced_step_prepare_throw, displaced_step_prepare)
(displaced_step_fixup): Take a thread pointer instead of a ptid_t.
All callers adjusted.
(start_step_over): Adjust.
(infrun_thread_ptid_changed): Remove bit updating ptids in the
displaced step queue.
(do_target_resume): Adjust.
(fetch_inferior_event): Use inferior_thread.
(context_switch, get_inferior_stop_soon): Take an
execution_control_state pointer instead of a ptid_t. All callers
adjusted.
(switch_to_thread_cleanup): Delete.
(stop_all_threads): Use scoped_restore_current_thread.
* inline-frame.c: Include "gdbthread.h".
(inline_state) <inline_state>: Take a thread pointer instead of a
ptid_t. All callers adjusted.
<ptid>: Delete, replaced by ...
<thread>: ... this new field.
(find_inline_frame_state): Take a thread pointer instead of a
ptid_t. All callers adjusted.
(skip_inline_frames, step_into_inline_frame)
(inline_skipped_frames, inline_skipped_symbol): Take a thread
pointer instead of a ptid_t. All callers adjusted.
* inline-frame.h (skip_inline_frames, step_into_inline_frame)
(inline_skipped_frames, inline_skipped_symbol): Likewise.
* linux-fork.c (delete_checkpoint_command): Adjust to use thread
pointers directly.
* linux-nat.c (get_detach_signal): Likewise.
* linux-thread-db.c (thread_from_lwp): New 'stopped' parameter.
(thread_db_notice_clone): Adjust.
(thread_db_find_new_threads_silently)
(thread_db_find_new_threads_2, thread_db_find_new_threads_1): Take
a thread pointer instead of a ptid_t. All callers adjusted.
* mi/mi-cmd-var.c: Include "inferior.h".
(mi_cmd_var_update_iter): Update to use thread pointers.
* mi/mi-interp.c (mi_new_thread): Update to use the thread's
inferior directly.
(mi_output_running_pid, mi_inferior_count): Delete, bits factored
out to ...
(mi_output_running): ... this new function.
(mi_on_resume_1): Adjust to use it.
(mi_user_selected_context_changed): Adjust to use inferior_thread.
* mi/mi-main.c (proceed_thread): Adjust to use thread pointers
directly.
(interrupt_thread_callback): : Adjust to use thread and inferior
pointers.
* proc-service.c: Include "gdbthread.h".
(ps_pglobal_lookup): Adjust to use the thread's inferior directly.
* progspace-and-thread.c: Include "inferior.h".
* progspace.c: Include "inferior.h".
* python/py-exitedevent.c (create_exited_event_object): Adjust to
hold a reference to an inferior_object.
* python/py-finishbreakpoint.c (bpfinishpy_init): Adjust to use
inferior_thread.
* python/py-inferior.c (struct inferior_object): Give the type a
tag name instead of a typedef.
(python_on_normal_stop): No need to check if the current thread is
listed.
(inferior_to_inferior_object): Change return type to
inferior_object. All callers adjusted.
(find_thread_object): Delete, bits factored out to ...
(thread_to_thread_object): ... this new function.
* python/py-infthread.c (create_thread_object): Use
inferior_to_inferior_object.
(thpy_is_stopped): Use thread pointer directly.
(gdbpy_selected_thread): Use inferior_thread.
* python/py-record-btrace.c (btpy_list_object) <ptid>: Delete
field, replaced with ...
<thread>: ... this new field. All users adjusted.
(btpy_insn_or_gap_new): Drop const.
(btpy_list_new): Take a thread pointer instead of a ptid_t. All
callers adjusted.
* python/py-record.c: Include "gdbthread.h".
(recpy_insn_new, recpy_func_new): Take a thread pointer instead of
a ptid_t. All callers adjusted.
(gdbpy_current_recording): Use inferior_thread.
* python/py-record.h (recpy_record_object) <ptid>: Delete
field, replaced with ...
<thread>: ... this new field. All users adjusted.
(recpy_element_object) <ptid>: Delete
field, replaced with ...
<thread>: ... this new field. All users adjusted.
(recpy_insn_new, recpy_func_new): Take a thread pointer instead of
a ptid_t. All callers adjusted.
* python/py-threadevent.c: Include "gdbthread.h".
(get_event_thread): Use thread_to_thread_object.
* python/python-internal.h (struct inferior_object): Forward
declare.
(find_thread_object, find_inferior_object): Delete declarations.
(thread_to_thread_object, inferior_to_inferior_object): New
declarations.
* record-btrace.c: Include "inferior.h".
(require_btrace_thread): Use inferior_thread.
(record_btrace_frame_sniffer)
(record_btrace_tailcall_frame_sniffer): Use inferior_thread.
(get_thread_current_frame): Use scoped_restore_current_thread and
switch_to_thread.
(get_thread_current_frame): Use thread pointer directly.
(record_btrace_replay_at_breakpoint): Use thread's inferior
pointer directly.
* record-full.c: Include "inferior.h".
* regcache.c: Include "gdbthread.h".
(get_thread_arch_regcache): Use the inferior's address space
directly.
(get_thread_regcache, registers_changed_thread): New.
* regcache.h (get_thread_regcache(thread_info *thread)): New
overload.
(registers_changed_thread): New.
(remote_target) <remote_detach_1>: Swap order of parameters.
(remote_add_thread): <remote_add_thread>: Return the new thread.
(get_remote_thread_info(ptid_t)): New overload.
(remote_target::remote_notice_new_inferior): Use thread pointers
directly.
(remote_target::process_initial_stop_replies): Use
thread_info::set_running.
(remote_target::remote_detach_1, remote_target::detach)
(extended_remote_target::detach): Adjust.
* stack.c (frame_show_address): Use inferior_thread.
* target-debug.h (target_debug_print_thread_info_pp): New.
* target-delegates.c: Regenerate.
* target.c (default_thread_address_space): Delete.
(memory_xfer_partial_1): Use current_inferior.
(target_detach): Use current_inferior.
(target_thread_address_space): Delete.
(generic_mourn_inferior): Use current_inferior.
* target.h (struct target_ops) <thread_address_space>: Delete.
(target_thread_address_space): Delete.
* thread.c (init_thread_list): Use ALL_THREADS_SAFE. Use thread
pointers directly.
(delete_thread_1, delete_thread, delete_thread_silent): Take a
thread pointer instead of a ptid_t. Adjust all callers.
(ptid_to_global_thread_id, global_thread_id_to_ptid): Delete.
(first_thread_of_process): Delete, replaced by ...
(first_thread_of_inferior): ... this new function. All callers
adjusted.
(any_thread_of_process): Rename to ...
(any_thread_of_inferior): ... this, and take an inferior pointer.
(any_live_thread_of_process): Rename to ...
(any_live_thread_of_inferior): ... this, and take an inferior
pointer.
(thread_stack_temporaries_enabled_p, push_thread_stack_temporary)
(value_in_thread_stack_temporaries)
(get_last_thread_stack_temporary): Take a thread pointer instead
of a ptid_t. Adjust all callers.
(thread_info::set_running): New.
(validate_registers_access): Use inferior_thread.
(can_access_registers_ptid): Rename to ...
(can_access_registers_thread): ... this, and take a thread
pointer.
(print_thread_info_1): Adjust to compare thread pointers instead
of ptids.
(switch_to_no_thread, switch_to_thread): Make extern.
(scoped_restore_current_thread::~scoped_restore_current_thread):
Use m_thread pointer directly.
(scoped_restore_current_thread::scoped_restore_current_thread):
Use inferior_thread.
(thread_command): Use thread pointer directly.
(thread_num_make_value_helper): Use inferior_thread.
* top.c (execute_command): Use inferior_thread.
* tui/tui-interp.c: Include "inferior.h".
* varobj.c (varobj_create): Use inferior_thread.
(value_of_root_1): Use find_thread_global_id instead of
global_thread_id_to_ptid.
Mark Wielaard pointed out this memory leak to me:
==17633== 775 bytes in 1 blocks are definitely lost in loss record 13,346 of 13,967
==17633== at 0x4C2DB6B: malloc (vg_replace_malloc.c:299)
==17633== by 0x6652B7: xmalloc (common-utils.c:45)
==17633== by 0xC4C889: xstrdup (xstrdup.c:34)
==17633== by 0x5A71FD: unicode_to_encoded_string(_object*, char const*) (py-utils.c:81)
==17633== by 0x5A73EB: python_string_to_host_string(_object*) (py-utils.c:158)
==17633== by 0x59CC6C: get_doc_string(_object*, _object*) (py-param.c:334)
==17633== by 0x59D2AA: parmpy_init(_object*, _object*, _object*) (py-param.c:728)
The bug here is that parmpy_init is written as though
add_setshow_generic takes ownership of its doc-string arguments.
However, it does not. This patch fixes the bug in a straightforward
way and also applies some missing constification to make the problem
more apparent.
Tested on x86-64 Fedora 26.
gdb/ChangeLog
2018-06-20 Tom Tromey <tom@tromey.com>
* python/py-param.c (add_setshow_generic): Make parameters const.
(parmpy_init): Update.
This changes read_string's "buffer" out-parameter to be a
unique_xmalloc_ptr, then updates the users. This allows for the
removal of some cleanups.
I chose unique_xmalloc_ptr rather than byte_vector here due to the way
Guile unwinding seems to work.
Tested by the buildbot.
gdb/ChangeLog
2018-06-18 Tom Tromey <tom@tromey.com>
* valprint.h (read_string): Update.
* valprint.c (read_string): Change type of "buffer".
(val_print_string): Update.
* python/py-value.c (valpy_string): Update.
* language.h (struct language_defn) <la_get_string>: Change
type of "buffer".
(default_get_string, c_get_string): Update.
* language.c (default_get_string): Change type of "buffer".
* guile/scm-value.c (gdbscm_value_to_string): Update.
* c-lang.c (c_get_string): Change type of "buffer".
Originally reported in
https://bugzilla.redhat.com/show_bug.cgi?id=1577396 -- gdb build fails
with Python 3.7 due to references to a Python internal function whose
declaration changed in 3.7.
gdb/ChangeLog
2018-06-08 Paul Koning <paul_koning@dell.com>
PR gdb/23252
* python/python.c (do_start_initialization):
Avoid call to internal Python API.
(init__gdb_module): New function.
This removes a static buffer from cp-name-parser.y by replacing the
fixed-sized buffer with a std::string out parameter.
gdb/ChangeLog
2018-06-01 Tom Tromey <tom@tromey.com>
* python/py-type.c (typy_legacy_template_argument): Update.
* cp-support.h (cp_demangled_name_to_comp): Update.
* cp-name-parser.y (cp_demangled_name_to_comp): Change errmsg
parameter to be a "std::string *".
(main): Update.
TYPE_TAG_NAME has been an occasional source of confusion and bugs. It
seems to me that it is only useful for C and C++ -- but even there,
not so much, because at least with DWARF there doesn't seem to be any
way to wind up with a type where the name and the tag name are both
non-NULL and different.
So, this patch removes TYPE_TAG_NAME entirely. This should save a
little memory, but more importantly, it simplifies this part of gdb.
A few minor test suite adjustments were needed. In some situations
the new code does not yield identical output to the old code.
gdb/ChangeLog
2018-06-01 Tom Tromey <tom@tromey.com>
* valops.c (enum_constant_from_type, value_namespace_elt)
(value_maybe_namespace_elt): Update.
* valarith.c (find_size_for_pointer_math): Update.
* target-descriptions.c (make_gdb_type): Update.
* symmisc.c (print_symbol): Update.
* stabsread.c (define_symbol, read_type)
(complain_about_struct_wipeout, add_undefined_type)
(cleanup_undefined_types_1): Update.
* rust-lang.c (rust_tuple_type_p, rust_slice_type_p)
(rust_range_type_p, val_print_struct, rust_print_struct_def)
(rust_internal_print_type, rust_composite_type)
(rust_evaluate_funcall, rust_evaluate_subexp)
(rust_inclusive_range_type_p): Update.
* python/py-type.c (typy_get_tag): Update.
* p-typeprint.c (pascal_type_print_base): Update.
* mdebugread.c (parse_symbol, parse_type): Update.
* m2-typeprint.c (m2_long_set, m2_record_fields, m2_enum):
Update.
* guile/scm-type.c (gdbscm_type_tag): Update.
* go-lang.c (sixg_string_p): Update.
* gnu-v3-abi.c (build_gdb_vtable_type, build_std_type_info_type):
Update.
* gdbtypes.h (struct main_type) <tag_name>: Remove.
(TYPE_TAG_NAME): Remove.
* gdbtypes.c (type_name_no_tag): Simplify.
(check_typedef, check_types_equal, recursive_dump_type)
(copy_type_recursive, arch_composite_type): Update.
* f-typeprint.c (f_type_print_base): Update. Print "Type" prefix
in summary mode when needed.
* eval.c (evaluate_funcall): Update.
* dwarf2read.c (fixup_go_packaging, read_structure_type)
(process_structure_scope, read_enumeration_type)
(read_namespace_type, read_module_type, determine_prefix): Update.
* cp-support.c (inspect_type): Update.
* coffread.c (process_coff_symbol, decode_base_type): Update.
* c-varobj.c (c_is_path_expr_parent): Update.
* c-typeprint.c (c_type_print_base_struct_union): Update.
(c_type_print_base_1): Update. Print struct/class/union/enum in
summary when using C language.
* ax-gdb.c (gen_struct_ref, gen_namespace_elt)
(gen_maybe_namespace_elt): Update.
* ada-lang.c (ada_type_name): Simplify.
(empty_record, ada_template_to_fixed_record_type_1)
(template_to_static_fixed_type)
(to_record_with_fixed_variant_part, ada_check_typedef): Update.
gdb/testsuite/ChangeLog
2018-06-01 Tom Tromey <tom@tromey.com>
* gdb.xml/tdesc-regs.exp (load_description): Update expected
results.
* gdb.dwarf2/method-ptr.exp: Set language to C++.
* gdb.dwarf2/member-ptr-forwardref.exp: Set language to C++.
* gdb.cp/typeid.exp (do_typeid_tests): Update type_re.
* gdb.base/maint.exp (maint_pass_if): Update.
It's long bothered me that setting a Python parameter from the CLI
will print the "set" help text by default. I think usually "set"
commands should be silent. And, while you can modify this behavior a
bit by providing a "get_set_string" method, if this method returns an
empty string, a blank line will be printed.
This patch removes the "help" behavior and changes the get_set_string
behavior to avoid printing a blank line. The code has a comment about
preserving API behavior, but I don't think this is truly important;
and in any case the workaround -- implementing get_set_string -- is
trivial.
Regression tested on x86-64 Fedora 26.
2018-04-26 Tom Tromey <tom@tromey.com>
* NEWS: Mention new "set" behavior.
* python/py-param.c (get_set_value): Don't print an empty string.
Don't call get_doc_string.
gdb/doc/ChangeLog
2018-04-26 Tom Tromey <tom@tromey.com>
* python.texi (Parameters In Python): Update get_set_string
documentation.
This adds a basic Python API for accessing convenience variables.
With this, convenience variables can be read and set from Python.
Although gdb supports convenience variables whose value changes at
each call, this is not exposed to Python; it could be, but I think
it's just as good to write a convenience function in this situation.
This is PR python/23080.
Tested on x86-64 Fedora 26.
2018-04-22 Tom Tromey <tom@tromey.com>
PR python/23080:
* NEWS: Update for new functions.
* python/py-value.c (gdbpy_set_convenience_variable)
(gdbpy_convenience_variable): New functions.
* python/python-internal.h (gdbpy_convenience_variable)
(gdbpy_set_convenience_variable): Declare.
* python/python.c (python_GdbMethods): Add convenience_variable,
set_convenience_variable.
doc/ChangeLog
2018-04-22 Tom Tromey <tom@tromey.com>
PR python/23080:
* python.texi (Basic Python): Document gdb.convenience_variable,
gdb.set_convenience_variable.
testsuite/ChangeLog
2018-04-22 Tom Tromey <tom@tromey.com>
PR python/23080:
* gdb.python/python.exp: Add convenience variable tests.
Tom Tromey
Tom de Vries
Philippe Waroquiers
Pedro Alves
Simon Marchi
Simon Marchi
Jan Vrany
Paul Koning