gdb/ChangeLog:
* NEWS: Mention gdb.Objfile.username.
* python/py-objfile.c (objfpy_get_username): New function.
(objfile_getset): Add "username".
gdb/doc/ChangeLog:
* python.texi (Objfiles In Python): Document Objfile.username.
gdb/testsuite/ChangeLog:
* gdb.python/py-objfile.exp: Add tests for objfile.username.
Add test for objfile.filename, objfile.username after objfile
has been unloaded.
gdb/Changelog:
* objfiles.c (objfile_filename): New function.
* objfiles.h (objfile_filename): Declare it.
(objfile_name): Add function comment.
* python/py-objfile.c (objfpy_lookup_objfile_by_name): Try both the
bfd file name (which may be realpath'd), and the original name.
gdb/testsuite/ChangeLog:
* gdb.python/py-objfile.exp: Test gdb.lookup_objfile on symlinked
binary.
The following python command fails:
(gdb) python print gdb.lookup_type('char').array(1, 0)
Traceback (most recent call last):
File "<string>", line 1, in <module>
ValueError: Array length must not be negative
Error while executing Python code.
The above is trying to create an empty array, which is fairly command
in Ada.
gdb/ChangeLog:
* python/py-type.c (typy_array_1): Do not raise negative-length
exception if N2 is equal to N1 - 1.
gdb/testsuite/ChangeLog:
* gdb.python/py-type.exp: Add a couple test about empty
array creation, and negative-length array creation.
gdb/ChangeLog:
* ada-lang.c (user_select_syms): Only fetch symtab if symbol is
objfile-owned.
(cache_symbol): Ignore symbols that are not objfile-owned.
* block.c (block_objfile): New function.
(block_gdbarch): New function.
* block.h (block_objfile): Declare.
(block_gdbarch): Declare.
* c-exp.y (classify_name): Remove call to
language_lookup_primitive_type. No longer necessary.
* gdbtypes.c (lookup_typename): Call lookup_symbol_in_language.
Remove call to language_lookup_primitive_type. No longer necessary.
* guile/scm-symbol.c (syscm_gdbarch_data_key): New static global.
(syscm_gdbarch_data): New struct.
(syscm_init_arch_symbols): New function.
(syscm_get_symbol_map): Renamed from syscm_objfile_symbol_map.
All callers updated. Handle symbols owned by arches.
(gdbscm_symbol_symtab): Handle symbols owned by arches.
(gdbscm_initialize_symbols): Initialize syscm_gdbarch_data_key.
* language.c (language_lookup_primitive_type_1): New function.
(language_lookup_primitive_type): Call it.
(language_alloc_type_symbol): New function.
(language_init_primitive_type_symbols): New function.
(language_lookup_primitive_type_as_symbol): New function.
* language.h (struct language_arch_info) <primitive_type_symbols>:
New member.
(language_lookup_primitive_type): Add function comment.
(language_lookup_primitive_type_as_symbol): Declare.
* printcmd.c (address_info): Handle arch-owned symbols.
* python/py-symbol.c (sympy_get_symtab): Ditto.
(set_symbol): Ditto.
(sympy_dealloc): Ditto.
* symmisc.c (print_symbol): Ditto.
* symtab.c (fixup_symbol_section): Ditto.
(lookup_symbol_aux): Initialize block_found.
(basic_lookup_symbol_nonlocal): Try looking up the symbol as a
primitive type.
(initialize_objfile_symbol_1): New function.
(initialize_objfile_symbol): Call it.
(allocate_symbol): Call it.
(allocate_template_symbol): Call it.
(symbol_objfile): Assert symbol is objfile-owned.
(symbol_arch, symbol_symtab, symbol_set_symtab): Ditto.
* symtab.h (struct symbol) <owner>: Replaces member "symtab".
(struct symbol) <is_objfile_owned>: New member.
(SYMBOL_OBJFILE_OWNED): New macro.
* cp-namespace.c (cp_lookup_bare_symbol): New arg langdef.
All callers updated. Try to find the symbol as a primitive type.
(lookup_namespace_scope): New arg langdef. All callers updated.
Call cp_lookup_bare_symbol directly for simple bare symbols.
The type of the function pointer PyOS_ReadlineFunctionPointer (part of the
Python C API), which we use, slightly changed starting with Python 3.4. The
signature went from
PyAPI_DATA(char) *(*PyOS_ReadlineFunctionPointer)(FILE *, FILE *, char *);
to
PyAPI_DATA(char) *(*PyOS_ReadlineFunctionPointer)(FILE *, FILE *, const char *);
The parameter that changed is the prompt text.
This commits adjust gdb accordingly by making the prompt_arg parameter
const, as well as the fallouts of that. I needed to rework how
annotations are added to the prompt, since the it is now const. If
annotations are enabled, it will make a copy of the prompt overwrite the
prompt variable that is used throughout the function. Otherwise, no copy
is done and the original prompt_arg value is passed.
I changed the signature of deprecated_readline_hook. I would've changed any
user of it, but it seems like nothing is using it,
Built-tested with python 2.7.x, 3.3.y and 3.4.z.
gdb/ChangeLog:
* defs.h (gdb_readline): Constify argument.
(gdb_readline_wrapper): Same.
(command_line_input): Same.
(deprecated_readline_hook): Same.
* top.c (deprecated_readline_hook): Same.
(gdb_readline): Same.
(gdb_readline_wrapper): Same.
(command_line_input): Constify argument. Pass prompt to
called functions instead of local_prompt, overwriting prompt
if using annotations.
* event-top.h (display_gdb_prompt): Constify argument.
* event-top.c (display_gdb_prompt): Same.
* python/py-gdb-readline.c (gdbpy_readline_wrapper): Constify
argument if building with Python 3.4 and up.
Signed-off-by: Simon Marchi <simon.marchi@ericsson.com>
It seems like using os.getcwdu() here is wrong both for Python 2 and Python 3.
For Python 2, this returns a 'unicode' object, which tries to get concatenated
to a 'str' object in substitute_prompt. The implicit conversion works when the
unicode string contains no accent. When it does contain an accent though,
displaying the prompt results in the following error:
(gdb) set extended-prompt \w
...
File "/home/simark/build/binutils-gdb-python2/gdb/data-directory/python/gdb/prompt.py", line 138, in substitute_prompt
result += str(cmd(arg))
UnicodeEncodeError: 'ascii' codec can't encode character u'\xe9' in position 49: ordinal not in range(128)
When using os.getcwd() instead, it works correctly. I suppose that Python does
the necessary decoding internally.
For Python 3, this method simply does not exist. It works fine with os.getcwd().
gdb/ChangeLog:
* python/lib/gdb/prompt.py (_prompt_pwd): Use os.getcwd() instead of
os.getcwdu().
Currently "symtabs" in gdb are stored as a single linked list of
struct symtab that contains both symbol symtabs (the blockvectors)
and file symtabs (the linetables).
This has led to confusion, bugs, and performance issues.
This patch is conceptually very simple: split struct symtab into
two pieces: one part containing things common across the entire
compilation unit, and one part containing things specific to each
source file.
Example.
For the case of a program built out of these files:
foo.c
foo1.h
foo2.h
bar.c
foo1.h
bar.h
Today we have a single list of struct symtabs:
objfile -> foo.c -> foo1.h -> foo2.h -> bar.c -> foo1.h -> bar.h -> NULL
where "->" means the "next" pointer in struct symtab.
With this patch, that turns into:
objfile -> foo.c(cu) -> bar.c(cu) -> NULL
| |
v v
foo.c bar.c
| |
v v
foo1.h foo1.h
| |
v v
foo2.h bar.h
| |
v v
NULL NULL
where "foo.c(cu)" and "bar.c(cu)" are struct compunit_symtab objects,
and the files foo.c, etc. are struct symtab objects.
So now, for example, when we want to iterate over all blockvectors
we can now just iterate over the compunit_symtab list.
Plus a lot of the data that was either unused or replicated for each
symtab in a compilation unit now lives in struct compunit_symtab.
E.g., the objfile pointer, the producer string, etc.
I thought of moving "language" out of struct symtab but there is
logic to try to compute the language based on previously seen files,
and I think that's best left as is for now.
With my standard monster benchmark with -readnow (which I can't actually
do, but based on my calculations), whereas today the list requires
77MB to store all the struct symtabs, it now only requires 37MB.
A modest space savings given the gigabytes needed for all the debug info,
etc. Still, it's nice. Plus, whereas today we create a copy of dirname
for each source file symtab in a compilation unit, we now only create one
for the compunit.
So this patch is basically just a data structure reorg,
I don't expect significant performance improvements from it.
Notes:
1) A followup patch can do a similar split for struct partial_symtab.
I have left that until after I get the changes I want in to
better utilize .gdb_index (it may affect how we do partial syms).
2) Another followup patch *could* rename struct symtab.
The term "symtab" is ambiguous and has been a source of confusion.
In this patch I'm leaving it alone, calling it the "historical" name
of "filetabs", which is what they are now: just the file-name + line-table.
gdb/ChangeLog:
Split struct symtab into two: struct symtab and compunit_symtab.
* amd64-tdep.c (amd64_skip_xmm_prologue): Fetch producer from compunit.
* block.c (blockvector_for_pc_sect): Change "struct symtab *" argument
to "struct compunit_symtab *". All callers updated.
(set_block_compunit_symtab): Renamed from set_block_symtab. Change
"struct symtab *" argument to "struct compunit_symtab *".
All callers updated.
(get_block_compunit_symtab): Renamed from get_block_symtab. Change
result to "struct compunit_symtab *". All callers updated.
(find_iterator_compunit_symtab): Renamed from find_iterator_symtab.
Change result to "struct compunit_symtab *". All callers updated.
* block.h (struct global_block) <compunit_symtab>: Renamed from symtab.
hange type to "struct compunit_symtab *". All uses updated.
(struct block_iterator) <d.compunit_symtab>: Renamed from "d.symtab".
Change type to "struct compunit_symtab *". All uses updated.
* buildsym.c (struct buildsym_compunit): New struct.
(subfiles, buildsym_compdir, buildsym_objfile, main_subfile): Delete.
(buildsym_compunit): New static global.
(finish_block_internal): Update to fetch objfile from
buildsym_compunit.
(make_blockvector): Delete objfile argument.
(start_subfile): Rewrite to use buildsym_compunit. Don't initialize
debugformat, producer.
(start_buildsym_compunit): New function.
(free_buildsym_compunit): Renamed from free_subfiles_list.
All callers updated.
(patch_subfile_names): Rewrite to use buildsym_compunit.
(get_compunit_symtab): New function.
(get_macro_table): Delete argument comp_dir. All callers updated.
(start_symtab): Change result to "struct compunit_symtab *".
All callers updated. Create the subfile of the main source file.
(watch_main_source_file_lossage): Rewrite to use buildsym_compunit.
(reset_symtab_globals): Update.
(end_symtab_get_static_block): Update to use buildsym_compunit.
(end_symtab_without_blockvector): Rewrite.
(end_symtab_with_blockvector): Change result to
"struct compunit_symtab *". All callers updated.
Update to use buildsym_compunit. Don't set symtab->dirname,
instead set it in the compunit.
Explicitly make sure main symtab is first in its list.
Set debugformat, producer, blockvector, block_line_section, and
macrotable in the compunit.
(end_symtab_from_static_block): Change result to
"struct compunit_symtab *". All callers updated.
(end_symtab, end_expandable_symtab): Ditto.
(set_missing_symtab): Change symtab argument to
"struct compunit_symtab *". All callers updated.
(augment_type_symtab): Ditto.
(record_debugformat): Update to use buildsym_compunit.
(record_producer): Update to use buildsym_compunit.
* buildsym.h (struct subfile) <dirname>: Delete.
<producer, debugformat>: Delete.
<buildsym_compunit>: New member.
(get_compunit_symtab): Declare.
* dwarf2read.c (struct type_unit_group) <compunit_symtab>: Renamed
from primary_symtab. Change type to "struct compunit_symtab *".
All uses updated.
(dwarf2_start_symtab): Change result to "struct compunit_symtab *".
All callers updated.
(dwarf_decode_macros): Delete comp_dir argument. All callers updated.
(struct dwarf2_per_cu_quick_data) <compunit_symtab>: Renamed from
symtab. Change type to "struct compunit_symtab *". All uses updated.
(dw2_instantiate_symtab): Change result to "struct compunit_symtab *".
All callers updated.
(dw2_find_last_source_symtab): Ditto.
(dw2_lookup_symbol): Ditto.
(recursively_find_pc_sect_compunit_symtab): Renamed from
recursively_find_pc_sect_symtab. Change result to
"struct compunit_symtab *". All callers updated.
(dw2_find_pc_sect_compunit_symtab): Renamed from
dw2_find_pc_sect_symtab. Change result to
"struct compunit_symtab *". All callers updated.
(get_compunit_symtab): Renamed from get_symtab. Change result to
"struct compunit_symtab *". All callers updated.
(recursively_compute_inclusions): Change type of immediate_parent
argument to "struct compunit_symtab *". All callers updated.
(compute_compunit_symtab_includes): Renamed from
compute_symtab_includes. All callers updated. Rewrite to compute
includes of compunit_symtabs and not symtabs.
(process_full_comp_unit): Update to work with struct compunit_symtab.
(process_full_type_unit): Ditto.
(dwarf_decode_lines_1): Delete argument comp_dir. All callers updated.
(dwarf_decode_lines): Remove special case handling of main subfile.
(macro_start_file): Delete argument comp_dir. All callers updated.
(dwarf_decode_macro_bytes): Ditto.
* guile/scm-block.c (bkscm_print_block_syms_progress_smob): Update to
use struct compunit_symtab.
* i386-tdep.c (i386_skip_prologue): Fetch producer from compunit.
* jit.c (finalize_symtab): Build compunit_symtab.
* jv-lang.c (get_java_class_symtab): Change result to
"struct compunit_symtab *". All callers updated.
* macroscope.c (sal_macro_scope): Fetch macro table from compunit.
* macrotab.c (struct macro_table) <compunit_symtab>: Renamed from
comp_dir. Change type to "struct compunit_symtab *".
All uses updated.
(new_macro_table): Change comp_dir argument to cust,
"struct compunit_symtab *". All callers updated.
* maint.c (struct cmd_stats) <nr_compunit_symtabs>: Renamed from
nr_primary_symtabs. All uses updated.
(count_symtabs_and_blocks): Update to handle compunits.
(report_command_stats): Update output, "primary symtabs" renamed to
"compunits".
* mdebugread.c (new_symtab): Change result to
"struct compunit_symtab *". All callers updated.
(parse_procedure): Change type of search_symtab argument to
"struct compunit_symtab *". All callers updated.
* objfiles.c (objfile_relocate1): Loop over blockvectors in a
separate loop.
* objfiles.h (struct objfile) <compunit_symtabs>: Renamed from
symtabs. Change type to "struct compunit_symtab *". All uses updated.
(ALL_OBJFILE_FILETABS): Renamed from ALL_OBJFILE_SYMTABS.
All uses updated.
(ALL_OBJFILE_COMPUNITS): Renamed from ALL_OBJFILE_PRIMARY_SYMTABS.
All uses updated.
(ALL_FILETABS): Renamed from ALL_SYMTABS. All uses updated.
(ALL_COMPUNITS): Renamed from ALL_PRIMARY_SYMTABS. All uses updated.
* psympriv.h (struct partial_symtab) <compunit_symtab>: Renamed from
symtab. Change type to "struct compunit_symtab *". All uses updated.
* psymtab.c (psymtab_to_symtab): Change result type to
"struct compunit_symtab *". All callers updated.
(find_pc_sect_compunit_symtab_from_partial): Renamed from
find_pc_sect_symtab_from_partial. Change result type to
"struct compunit_symtab *". All callers updated.
(lookup_symbol_aux_psymtabs): Change result type to
"struct compunit_symtab *". All callers updated.
(find_last_source_symtab_from_partial): Ditto.
* python/py-symtab.c (stpy_get_producer): Fetch producer from compunit.
* source.c (forget_cached_source_info_for_objfile): Fetch debugformat
and macro_table from compunit.
* symfile-debug.c (debug_qf_find_last_source_symtab): Change result
type to "struct compunit_symtab *". All callers updated.
(debug_qf_lookup_symbol): Ditto.
(debug_qf_find_pc_sect_compunit_symtab): Renamed from
debug_qf_find_pc_sect_symtab, change result type to
"struct compunit_symtab *". All callers updated.
* symfile.c (allocate_symtab): Delete objfile argument.
New argument cust.
(allocate_compunit_symtab): New function.
(add_compunit_symtab_to_objfile): New function.
* symfile.h (struct quick_symbol_functions) <lookup_symbol>:
Change result type to "struct compunit_symtab *". All uses updated.
<find_pc_sect_compunit_symtab>: Renamed from find_pc_sect_symtab.
Change result type to "struct compunit_symtab *". All uses updated.
* symmisc.c (print_objfile_statistics): Compute blockvector count in
separate loop.
(dump_symtab_1): Update test for primary source symtab.
(maintenance_info_symtabs): Update to handle compunit symtabs.
(maintenance_check_symtabs): Ditto.
* symtab.c (set_primary_symtab): Delete.
(compunit_primary_filetab): New function.
(compunit_language): New function.
(iterate_over_some_symtabs): Change type of arguments "first",
"after_last" to "struct compunit_symtab *". All callers updated.
Update to loop over symtabs in each compunit.
(error_in_psymtab_expansion): Rename symtab argument to cust,
and change type to "struct compunit_symtab *". All callers updated.
(find_pc_sect_compunit_symtab): Renamed from find_pc_sect_symtab.
Change result type to "struct compunit_symtab *". All callers updated.
(find_pc_compunit_symtab): Renamed from find_pc_symtab.
Change result type to "struct compunit_symtab *". All callers updated.
(find_pc_sect_line): Only loop over symtabs within selected compunit
instead of all symtabs in the objfile.
* symtab.h (struct symtab) <blockvector>: Moved to compunit_symtab.
<compunit_symtab> New member.
<block_line_section>: Moved to compunit_symtab.
<locations_valid>: Ditto.
<epilogue_unwind_valid>: Ditto.
<macro_table>: Ditto.
<dirname>: Ditto.
<debugformat>: Ditto.
<producer>: Ditto.
<objfile>: Ditto.
<call_site_htab>: Ditto.
<includes>: Ditto.
<user>: Ditto.
<primary>: Delete
(SYMTAB_COMPUNIT): New macro.
(SYMTAB_BLOCKVECTOR): Update definition.
(SYMTAB_OBJFILE): Update definition.
(SYMTAB_DIRNAME): Update definition.
(struct compunit_symtab): New type. Common members among all source
symtabs within a compilation unit moved here. All uses updated.
(COMPUNIT_OBJFILE): New macro.
(COMPUNIT_FILETABS): New macro.
(COMPUNIT_DEBUGFORMAT): New macro.
(COMPUNIT_PRODUCER): New macro.
(COMPUNIT_DIRNAME): New macro.
(COMPUNIT_BLOCKVECTOR): New macro.
(COMPUNIT_BLOCK_LINE_SECTION): New macro.
(COMPUNIT_LOCATIONS_VALID): New macro.
(COMPUNIT_EPILOGUE_UNWIND_VALID): New macro.
(COMPUNIT_CALL_SITE_HTAB): New macro.
(COMPUNIT_MACRO_TABLE): New macro.
(ALL_COMPUNIT_FILETABS): New macro.
(compunit_symtab_ptr): New typedef.
(DEF_VEC_P (compunit_symtab_ptr)): New vector type.
gdb/testsuite/ChangeLog:
* gdb.base/maint.exp: Update expected output.
gdb/ChangeLog:
* NEWS: Mention ability add attributes to gdb.Objfile and
gdb.Progspace objects.
* python/py-objfile.c (objfile_object): New member dict.
(objfpy_dealloc): Py_XDECREF dict.
(objfpy_initialize): Initialize dict.
(objfile_getset): Add __dict__.
(objfile_object_type): Set tp_dictoffset member.
* python/py-progspace.c (progspace_object): New member dict.
(pspy_dealloc): Py_XDECREF dict.
(pspy_initialize): Initialize dict.
(pspace_getset): Add __dict__.
(pspace_object_type): Set tp_dictoffset member.
gdb/doc/ChangeLog:
* python.texi (Progspaces In Python): Document ability to add
random attributes to gdb.Progspace objects.
(Objfiles In Python): Document ability to add random attributes to
gdb.objfile objects.
gdb/testsuite/ChangeLog:
* gdb.python/py-objfile.exp: Add tests for setting random attributes
in objfiles.
* gdb.python/py-progspace.exp: Add tests for setting random attributes
in progspaces.
In gdb/command/prompt.py:before_prompt_hook, the '\' in the new prompt
is replaced with '\\', shown as below,
> def before_prompt_hook(self, current):
> if self.value is not '':
> newprompt = gdb.prompt.substitute_prompt(self.value)
> return newprompt.replace('\\', '\\\\')
> else:
> return None
I don't see any explanations on this in comments nor email. As doc
said, "set extended-prompt \w" substitute the current working
directory, but it prints something different from what pwd or
os.getcwdu() prints on mingw32 host.
(gdb) python print os.getcwdu()^M
\\build2-lucid-cs\yqi\yqi\arm-none-eabi
(gdb) pwd^M
Working directory \\build2-lucid-cs\yqi\yqi\arm-none-eabi
(gdb) set extended-prompt \w
\\\\build2-lucid-cs\\yqi\\yqi\\arm-none-eabi
This makes me think whether the substitution in before_prompt_hook is
necessary or not. This patch is to remove this substitution.
Run gdb.python on x86_64-linux and arm-none-eabi on mingw32 host. No
regressions.
gdb:
2014-10-30 Yao Qi <yao@codesourcery.com>
* python/lib/gdb/command/prompt.py (before_prompt_hook): Don't
replace '\\' with '\\\\'.
If one is watching new_objfile events in python, it helps to know
when the list of objfiles is cleared. This patch adds a new
clear_objfiles event to support this.
This patch is all just cut-n-paste-n-tweak derived from
the new_objfiles event.
gdb/ChangeLog:
* NEWS: Mention new event gdb.clear_objfiles.
* python/py-event.h (emit_clear_objfiles_event): Clear
* python/py-events.h (events_object): New member clear_objfiles.
* python/py-evts.c (gdbpy_initialize_py_events): Add clear_objfiles
event.
* python/py-inferior.c (python_new_objfile): If objfile is NULL,
emit clear_objfiles event.
* python/py-newobjfileevent.c (create_clear_objfiles_event_object): New
function.
(emit_clear_objfiles_event): New function.
(clear_objfiles): New event.
* python/python-internal.h (gdbpy_initialize_clear_objfiles_event):
Declare.
* python/python.c (_initialize_python): Call
gdbpy_initialize_clear_objfiles_event.
gdb/doc/ChangeLog:
* python.texi (Events In Python): Document clear_objfiles event.
gdb/testsuite/ChangeLog:
* gdb.python/py-events.exp: Update expected output for clear_objfiles
event.
* gdb.python/py-events.py: Add clear_objfiles event.
gdb/ChangeLog:
* NEWS: Mention new gdb.Objfile.progspace attribute.
* python/py-objfile.c (objfpy_get_progspace): New function.
(objfile_getset): New entry for "progspace".
gdb/doc/ChangeLog:
* python.texi (Objfiles In Python): Document new progspace attribute.
gdb/testsuite/ChangeLog:
* gdb.python/py-objfile.exp: Test progspace attribute.
gdb/ChangeLog:
* python/lib/gdb/__init__.py (packages): Add "printer".
* python/lib/gdb/command/bound_registers.py: Moved to ...
* python/lib/gdb/printer/bound_registers.py: ... here.
Add printer to global set of builtin printers. Rename printer from
"bound" to "mpx_bound128".
* python/lib/gdb/printing.py (_builtin_pretty_printers): New global,
registered as global "builtin" printer.
(add_builtin_pretty_printer): New function.
* data-directory/Makefile.in (PYTHON_FILE_LIST): Update, and add
gdb/printer/__init__.py.
gdb/ChangeLog:
* py-objfile.c (objfpy_initialize): New function.
(objfpy_new, objfile_to_objfile_object): Call it.
* py-progspace.c (pspy_initialize): New function.
(pspy_new, pspace_to_pspace_object): Call it.
gdb/ChangeLog:
* guile/scm-cmd.c (gdbscm_parse_command_name): Replace magic number
with named constant. Fix style of pointer comparison.
* python/py-cmd.c (gdbpy_parse_command_name): Ditto.
https://bugzilla.redhat.com/show_bug.cgi?id=1126177
ERROR: AddressSanitizer: SEGV on unknown address 0x000000000050 (pc 0x000000992bef sp 0x7ffff9039530 bp 0x7ffff9039540
T0)
#0 0x992bee in value_type .../gdb/value.c:925
#1 0x87c951 in py_print_single_arg python/py-framefilter.c:445
#2 0x87cfae in enumerate_args python/py-framefilter.c:596
#3 0x87e0b0 in py_print_args python/py-framefilter.c:968
It crashes because frame_arg::val is documented it may contain NULL
(frame_arg::error is then non-NULL) but the code does not handle it.
Another bug is that py_print_single_arg() calls goto out of its TRY_CATCH
which messes up GDB cleanup chain crashing GDB later.
It is probably 7.7 regression (I have not verified it) due to the introduction
of Python frame filters.
gdb/ChangeLog
PR python/17355
* python/py-framefilter.c (py_print_single_arg): Handle NULL FA->VAL.
Fix goto out of TRY_CATCH.
gdb/testsuite/ChangeLog
PR python/17355
* gdb.python/amd64-py-framefilter-invalidarg.S: New file.
* gdb.python/py-framefilter-invalidarg-gdb.py.in: New file.
* gdb.python/py-framefilter-invalidarg.exp: New file.
* gdb.python/py-framefilter-invalidarg.py: New file.
The ability to read registers is needed to use Frame Filter API to
display the frames created by JIT compilers.
gdb/ChangeLog:
2014-08-29 Sasha Smundak <asmundak@google.com>
* python/py-frame.c (frapy_read_register): New function.
gdb/doc/ChangeLog:
2014-08-26 Sasha Smundak <asmundak@google.com>
* python.texi (Frames in Python): Add read_register description.
gdb/testsuite/ChangeLog:
2014-08-26 Sasha Smundak <asmundak@google.com>
* gdb.python/py-frame.exp: Test Frame.read_register.
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.
gdb/
* python/lib/gdb/command/xmethods.py (set_xm_status1): Use the
'items' methods instead of 'iteritems' method on dictionaries.
gdb/testsuite/
* gdb.python/py-xmethods.py (A_getarrayind)
(E_method_char_worker.__call__, E_method_int_worker.__call__):
Use 'print' with function call syntax.
(E_method_matcher.match): Fix tab vs space indentation mixup.
This commit moves the inclusion of libiberty.h to common-defs.h and
removes all other inclusions.
gdb/
2014-08-07 Gary Benson <gbenson@redhat.com>
* common/common-defs.h: Include libiberty.h.
* defs.h: Do not include libiberty.h.
* common/queue.h: Likewise.
* cp-name-parser.y: Likewise.
* mi/mi-cmd-catch.c: Likewise.
* python/python.c: Likewise.
gdb/gdbserver/
2014-08-07 Gary Benson <gbenson@redhat.com>
* server.h: Do not include libiberty.h.
* linux-bfin-low.c: Likewise.
Currently, the xmethod commands lookup xmethod matchers in the current
progspace even if the locus regular expression matches the progspace's
filename. Pretty printer commands do not match the current progspace's
filename.
gdb/
* python/lib/gdb/command/xmethods.py
(get_method_matchers_in_loci): Lookup xmethod matchers in the
current progspace only if the string "progspace" matches LOCUS_RE.
gdb/testsuite
* gdb.python/py-xmethods.exp: Use "progspace" instead of the
progspace's filename in 'info', 'enable' and 'disable' command
tests.
Generally, the blockvector ought to be readonly. So, this patch makes
the blockvector const in the symtab, and also changes various
blockvector APIs to be const.
This patch has a couple of spots that cast away const. I consider
these to be ok because they occur in mdebugread and are used while
constructing the blockvector. I have added comments at these spots.
2014-06-18 Tom Tromey <tromey@redhat.com>
* symtab.h (struct symtab) <blockvector>: Now const.
* ada-lang.c (ada_add_global_exceptions): Update.
* buildsym.c (augment_type_symtab): Update.
* dwarf2read.c (dw2_lookup_symbol): Update.
* jit.c (finalize_symtab): Update.
* jv-lang.c (add_class_symtab_symbol): Update.
* mdebugread.c (parse_symbol, add_block, sort_blocks, new_symtab):
Update.
* objfiles.c (objfile_relocate1): Update.
* psymtab.c (lookup_symbol_aux_psymtabs)
(maintenance_check_psymtabs): Update.
* python/py-symtab.c (stpy_global_block, stpy_static_block):
Update.
* spu-tdep.c (spu_catch_start): Update.
* symmisc.c (dump_symtab_1): Update.
* symtab.c (lookup_global_symbol_from_objfile)
(lookup_symbol_aux_objfile, lookup_symbol_aux_quick)
(basic_lookup_transparent_type_quick)
(basic_lookup_transparent_type, find_pc_sect_symtab)
(find_pc_sect_line, search_symbols): Update.
* block.c (find_block_in_blockvector): Make "bl" const.
(blockvector_for_pc_sect, blockvector_for_pc): Make return type
const.
(blockvector_contains_pc): Make "bv" const.
(block_for_pc_sect): Update.
* block.h (blockvector_for_pc, blockvector_for_pc_sect)
(blockvector_contains_pc): Update.
* breakpoint.c (resolve_sal_pc): Update.
* inline-frame.c (block_starting_point_at): Update.
