This commit is the result of running the gdb/copyright.py script,
which automated the update of the copyright year range for all
source files managed by the GDB project to be updated to include
year 2023.

This rewrites registry.h, removing all the macros and replacing it
with relatively ordinary template classes.  The result is less code
than the previous setup.  It replaces large macros with a relatively
straightforward C++ class, and now manages its own cleanup.

The existing type-safe "key" class is replaced with the equivalent
template class.  This approach ended up requiring relatively few
changes to the users of the registry code in gdb -- code using the key
system just required a small change to the key's declaration.

All existing users of the old C-like API are now converted to use the
type-safe API.  This mostly involved changing explicit deletion
functions to be an operator() in a deleter class.

The old "save/free" two-phase process is removed, and replaced with a
single "free" phase.  No existing code used both phases.

The old "free" callbacks took a parameter for the enclosing container
object.  However, this wasn't truly needed and is removed here as
well.

PR python/27000 points out that gdb.block_for_pc will accept a Python
integer, but not a gdb.Value.  This patch corrects this oversight.

I looked at all uses of GDB_PY_LLU_ARG and fixed these up to use
get_addr_from_python instead.  I also looked at uses of GDB_PY_LL_ARG,
but those seemed relatively unlikely to be useful with a gdb.Value, so
I didn't change them.  My thinking here is that a Value will typically
come from inferior memory, and something like a line number is not too
likely to be found this way.

Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=27000

I noticed that solib_name_from_address returned a non-const string,
but it's more appropriate to return const.  This patch implements
this.  Tested by rebuilding.

Add a new function, gdb.format_address, which is a wrapper around
GDB's print_address function.

This method takes an address, and returns a string with the format:

  ADDRESS <SYMBOL+OFFSET>

Where, ADDRESS is the original address, formatted as hexadecimal,
SYMBOL is a symbol with an address lower than ADDRESS, and OFFSET is
the offset from SYMBOL to ADDRESS in decimal.

If there's no SYMBOL suitably close to ADDRESS then the
<SYMBOL+OFFSET> part is not included.

This is useful if a user wants to write a Python script that
pretty-prints addresses, the user no longer needs to do manual symbol
lookup, or worry about correctly formatting addresses.

Additionally, there are some settings that effect how GDB picks
SYMBOL, and whether the file name and line number should be included
with the SYMBOL name, the gdb.format_address function ensures that the
users Python script also benefits from these settings.

The gdb.format_address by default selects SYMBOL from the current
inferiors program space, and address is formatted using the
architecture for the current inferior.  However, a user can also
explicitly pass a program space and architecture like this:

  gdb.format_address(ADDRESS, PROGRAM_SPACE, ARCHITECTURE)

In order to format an address for a different inferior.

Notes on the implementation:

In py-arch.c I extended arch_object_to_gdbarch to add an assertion for
the type of the PyObject being worked on.  Prior to this commit all
uses of arch_object_to_gdbarch were guaranteed to pass this function a
gdb.Architecture object, but, with this commit, this might not be the
case.

So, with this commit I've made it a requirement that the PyObject be a
gdb.Architecture, and this is checked with the assert.  And in order
that callers from other files can check if they have a
gdb.Architecture object, I've added the new function
gdbpy_is_architecture.

In py-progspace.c I've added two new function, the first
progspace_object_to_program_space, converts a PyObject of type
gdb.Progspace to the associated program_space pointer, and
gdbpy_is_progspace checks if a PyObject is a gdb.Progspace or not.

Remove the macro, update all users to use the getter directly.

Change-Id: I3f0fd6f4455d1c4ebd5da73b561eb18a979ef1f6

Currently, gdb's Python layer captures the current architecture and
language when "entering" Python code.  This has some undesirable
effects, and so this series changes how this is handled.

First, there is code like this:

  gdbpy_enter enter_py (python_gdbarch, python_language);

This is incorrect, because both of these are NULL when not otherwise
assigned.  This can cause crashes in some cases -- I've added one to
the test suite.  (Note that this crasher is just an example, other
ones along the same lines are possible.)

Second, when the language is captured in this way, it means that
Python code cannot affect the current language for its own purposes.
It's reasonable to want to write code like this:

    gdb.execute('set language mumble')
    ... stuff using the current language
    gdb.execute('set language previous-value')

However, this won't actually work, because the language is captured on
entry.  I've added a test to show this as well.

This patch changes gdb to try to avoid capturing the current values.
The Python concept of the current gdbarch is only set in those few
cases where a non-default value is computed or needed; and the
language is not captured at all -- instead, in the cases where it's
required, the current language is temporarily changed.

This commit brings all the changes made by running gdb/copyright.py
as per GDB's Start of New Year Procedure.

For the avoidance of doubt, all changes in this commits were
performed by the script.

Delay Python initialisation until gdbpy_finish_initialization.

This is mostly about splitting the existing gdbpy_initialize_*
functions in two, all the calls to register_objfile_data_with_cleanup,
gdbarch_data_register_post_init, etc are moved into new _initialize_*
functions, but everything else is left in the gdbpy_initialize_*
functions.

Then the call to do_start_initialization (in python/python.c) is moved
from the _initialize_python function into gdbpy_finish_initialization.

There should be no user visible changes after this commit.

gdb/ChangeLog:

	* python/py-arch.c (_initialize_py_arch): New function.
	(gdbpy_initialize_arch): Move code to _initialize_py_arch.
	* python/py-block.c (_initialize_py_block): New function.
	(gdbpy_initialize_blocks): Move code to _initialize_py_block.
	* python/py-inferior.c (_initialize_py_inferior): New function.
	(gdbpy_initialize_inferior): Move code to _initialize_py_inferior.
	* python/py-objfile.c (_initialize_py_objfile): New function.
	(gdbpy_initialize_objfile): Move code to _initialize_py_objfile.
	* python/py-progspace.c (_initialize_py_progspace): New function.
	(gdbpy_initialize_pspace): Move code to _initialize_py_progspace.
	* python/py-registers.c (_initialize_py_registers): New function.
	(gdbpy_initialize_registers): Move code to
	_initialize_py_registers.
	* python/py-symbol.c (_initialize_py_symbol): New function.
	(gdbpy_initialize_symbols): Move code to _initialize_py_symbol.
	* python/py-symtab.c (_initialize_py_symtab): New function.
	(gdbpy_initialize_symtabs): Move code to _initialize_py_symtab.
	* python/py-type.c (_initialize_py_type): New function.
	(gdbpy_initialize_types): Move code to _initialize_py_type.
	* python/py-unwind.c (_initialize_py_unwind): New function.
	(gdbpy_initialize_unwind): Move code to _initialize_py_unwind.
	* python/python.c (_initialize_python): Move call to
	do_start_initialization to gdbpy_finish_initialization.
	(gdbpy_finish_initialization): Add call to
	do_start_initialization.

This commits the result of running gdb/copyright.py as per our Start
of New Year procedure...

gdb/ChangeLog

        Update copyright year range in copyright header of all GDB files.

I was inspired by this patch of Simon's:

https://sourceware.org/pipermail/gdb-patches/2020-November/173522.html

... to remove other typedefs that are no longer necessary now that gdb
uses C++.

I didn't remove absolutely every one -- I didn't touch the tdep files.
However, I removed many of them.  In some cases, I removed an existing
different struct tag.

2020-12-04  Tom Tromey  <tromey@adacore.com>

	* linespec.c (struct linespec_token): Rename; remove typedef.
	* guile/scm-block.c (struct block_smob): Remove typedef.
	(struct block_syms_progress_smob): Likewise.
	* guile/scm-symbol.c (struct symbol_smob): Remove typedef.
	* guile/scm-symtab.c (symtab_smob): Remove typedef.
	(struct sal_smob): Remove typedef.
	* guile/scm-param.c (struct param_smob): Remove typedef.
	* guile/scm-progspace.c (struct pspace_smob): Rename.
	* guile/scm-objfile.c (struct objfile_smob): Rename.
	* guile/scm-iterator.c (struct iterator_smob): Rename.
	* guile/scm-frame.c (struct frame_smob): Rename.
	* guile/scm-arch.c (struct arch_smob): Rename.
	* guile/scm-type.c (struct field_smob): Remove typedef.
	(struct type_smob): Rename.
	* guile/scm-cmd.c (struct command_smob): Remove typedef.
	* guile/scm-ports.c (struct ioscm_memory_port): Remove typedef.
	* guile/scm-value.c (struct value_smob): Remove typedef.
	* guile/scm-lazy-string.c (lazy_string_smob): Remove typedef.
	* guile/guile-internal.h (struct scheme_variable)
	(struct scheme_function, struct scheme_integer_constant)
	(struct gdb_smob, struct chained_gdb_smob)
	(struct eqable_gdb_smob, arch_smob, frame_smob, iterator_smob)
	(objfile_smob, pspace_smob, type_smob): Remove typedef.
	* guile/scm-pretty-print.c (pretty_printer_smob): Remove typedef.
	(struct pretty_printer_worker_smob): Remove typedef.
	* guile/scm-exception.c (struct exception_smob): Remove typedef.
	* python/py-block.c (struct block_object): Remove typedef.
	(block_syms_iterator_object): Update.
	(set_block): Update.
	(block_syms_iterator_object): Remove typedef.
	* python/py-inferior.c (struct membuf_object): Remove typedef.
	* python/py-symtab.c (struct symtab_object): Remove typedef.
	(set_symtab): Update.
	(sal_object): Remove typedef.
	(set_sal): Update.
	* python/py-frame.c (frame_object): Remove typedef.
	* python/py-record-btrace.c (struct btpy_list_object): Remove
	typedef.
	* python/py-arch.c (struct arch_object): Remove typedef.
	* python/py-linetable.c (struct linetable_entry_object)
	(linetable_object, struct ltpy_iterator_object): Remove typedef.
	* python/py-events.h (eventregistry_object): Remove typedef.
	(struct events_object): Remove typedef.
	* python/python-internal.h (gdbpy_breakpoint_object): Remove
	typedef.
	(thread_object): Remove typedef.
	* python/py-progspace.c (pspace_object): Remove typedef.
	* python/py-value.c (struct value_object): Remove typedef.
	* python/py-record.h (recpy_record_object): Remove typedef.
	(struct recpy_element_object): Remove typedef.
	* python/py-lazy-string.c (lazy_string_object): Remove typedef.
	* python/py-objfile.c (objfile_object): Remove typedef.
	* python/py-cmd.c (struct cmdpy_object): Remove typedef.
	* python/py-type.c (type_object): Remove typedef.
	(typy_iterator_object): Update.
	(set_type): Update.
	(field_object): Remove typedef.
	(typy_iterator_object): Remove typedef.
	* python/py-registers.c (register_descriptor_iterator_object):
	Remove typedef.
	(struct register_descriptor_object)
	(struct reggroup_iterator_object, struct reggroup_object): Remove
	typedef.
	* python/py-record.c (recpy_gap_object): Remove typedef.
	* python/py-symbol.c (symbol_object): Remove typedef.
	(set_symbol): Update.
	* python/py-event.h (event_object): Remove typedef.
	* python/py-param.c (parmpy_object): Remove typedef.
	* python/py-instruction.c (struct py_insn_obj): Remove typedef.
	* python/py-unwind.c (struct pending_frame_object): Remove typedef.
	(unwind_info_object, struct cached_frame_info): Likewise.

gdb/ChangeLog:

        Update copyright year range in all GDB files.

The documentation for Progspace.block_for_pc says:

  Return the innermost gdb.Block containing the given pc value. If the
  block cannot be found for the pc value specified, the function will
  return None.

However, the implementation actually throws an error for invalid
addresses, like this:

    (gdb) python print gdb.current_progspace ().block_for_pc (1)
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
    RuntimeError: Cannot locate object file for block.
    Error while executing Python code.
    (gdb)

This has been the behaviour since the command was first added (when
the documentation was still as above) in this commit:

    commit f3e9a817
    Date:   Wed Feb 24 21:18:28 2010 +0000

Since that commit the code in question has moved around, but the
important parts are largely unchanged.  The function in question is
now in py-progspace.c:pspy_block_for_pc.

Examining the code shows that the real state is more complex than just
the function throws an error instead of returning None, instead the
real situation is:

  1. If we can't find a compilation unit for the $pc value then we
  throw an error, but

  2. If we can find a compilation unit, but can't find a block within
  the compilation unit for the $pc then return None.

I suspect for most users of the Python API this distinction is
irrelevant, and I propose that we standardise on one single failure
mechanism.

Given the function can currently return None in some cases, and is
documented to return None on error, I propose we make that the case
for all error paths, which is what this patch does.

As the Progspace.block_for_pc method is currently untested, I've added
some basic tests including for a call with an invalid $pc.

This is potentially an API breaking change, though an undocumented
part of the API.  Also, users should have been checking and handling a
None return value anyway, so my hope is that this shouldn't be too
disruptive.

gdb/ChangeLog:

	* python/py-progspace.c (pspy_block_for_pc): Return None for all
	error paths.

gdb/testsuite/ChangeLog:

	* gdb.python/py-progspace.exp: Add tests for the
	Progspace.block_for_pc method.

Change-Id: I9cea8d2132902bcad0013d1fd39080dd5423cc57

This renames the gdb exception types.  The old types were only needed
due to the macros in common-exception.h that are now gone.

The intermediate layer of gdb_exception_RETURN_MASK_ALL did not seem
needed, so this patch removes it entirely.

gdb/ChangeLog
2019-04-08  Tom Tromey  <tom@tromey.com>

	* common/common-exceptions.h (gdb_exception_RETURN_MASK_ALL):
	Remove.
	(gdb_exception_error): Rename from
	gdb_exception_RETURN_MASK_ERROR.
	(gdb_exception_quit): Rename from gdb_exception_RETURN_MASK_QUIT.
	(gdb_quit_bad_alloc): Update.
	* aarch64-tdep.c: Update.
	* ada-lang.c: Update.
	* ada-typeprint.c: Update.
	* ada-valprint.c: Update.
	* amd64-tdep.c: Update.
	* arch-utils.c: Update.
	* break-catch-throw.c: Update.
	* breakpoint.c: Update.
	* btrace.c: Update.
	* c-varobj.c: Update.
	* cli/cli-cmds.c: Update.
	* cli/cli-interp.c: Update.
	* cli/cli-script.c: Update.
	* common/common-exceptions.c: Update.
	* common/new-op.c: Update.
	* common/selftest.c: Update.
	* compile/compile-c-symbols.c: Update.
	* compile/compile-cplus-symbols.c: Update.
	* compile/compile-object-load.c: Update.
	* compile/compile-object-run.c: Update.
	* completer.c: Update.
	* corelow.c: Update.
	* cp-abi.c: Update.
	* cp-support.c: Update.
	* cp-valprint.c: Update.
	* darwin-nat.c: Update.
	* disasm-selftests.c: Update.
	* dtrace-probe.c: Update.
	* dwarf-index-cache.c: Update.
	* dwarf-index-write.c: Update.
	* dwarf2-frame-tailcall.c: Update.
	* dwarf2-frame.c: Update.
	* dwarf2loc.c: Update.
	* dwarf2read.c: Update.
	* eval.c: Update.
	* event-loop.c: Update.
	* event-top.c: Update.
	* exec.c: Update.
	* f-valprint.c: Update.
	* fbsd-tdep.c: Update.
	* frame-unwind.c: Update.
	* frame.c: Update.
	* gdbtypes.c: Update.
	* gnu-v3-abi.c: Update.
	* guile/guile-internal.h: Update.
	* guile/scm-block.c: Update.
	* guile/scm-breakpoint.c: Update.
	* guile/scm-cmd.c: Update.
	* guile/scm-disasm.c: Update.
	* guile/scm-frame.c: Update.
	* guile/scm-lazy-string.c: Update.
	* guile/scm-math.c: Update.
	* guile/scm-param.c: Update.
	* guile/scm-ports.c: Update.
	* guile/scm-pretty-print.c: Update.
	* guile/scm-symbol.c: Update.
	* guile/scm-symtab.c: Update.
	* guile/scm-type.c: Update.
	* guile/scm-value.c: Update.
	* i386-linux-tdep.c: Update.
	* i386-tdep.c: Update.
	* inf-loop.c: Update.
	* infcall.c: Update.
	* infcmd.c: Update.
	* infrun.c: Update.
	* jit.c: Update.
	* language.c: Update.
	* linespec.c: Update.
	* linux-fork.c: Update.
	* linux-nat.c: Update.
	* linux-tdep.c: Update.
	* linux-thread-db.c: Update.
	* main.c: Update.
	* mi/mi-cmd-break.c: Update.
	* mi/mi-cmd-stack.c: Update.
	* mi/mi-interp.c: Update.
	* mi/mi-main.c: Update.
	* objc-lang.c: Update.
	* p-valprint.c: Update.
	* parse.c: Update.
	* ppc-linux-tdep.c: Update.
	* printcmd.c: Update.
	* python/py-arch.c: Update.
	* python/py-breakpoint.c: Update.
	* python/py-cmd.c: Update.
	* python/py-finishbreakpoint.c: Update.
	* python/py-frame.c: Update.
	* python/py-framefilter.c: Update.
	* python/py-gdb-readline.c: Update.
	* python/py-inferior.c: Update.
	* python/py-infthread.c: Update.
	* python/py-lazy-string.c: Update.
	* python/py-linetable.c: Update.
	* python/py-objfile.c: Update.
	* python/py-param.c: Update.
	* python/py-prettyprint.c: Update.
	* python/py-progspace.c: Update.
	* python/py-record-btrace.c: Update.
	* python/py-record.c: Update.
	* python/py-symbol.c: Update.
	* python/py-type.c: Update.
	* python/py-unwind.c: Update.
	* python/py-utils.c: Update.
	* python/py-value.c: Update.
	* python/python.c: Update.
	* record-btrace.c: Update.
	* record-full.c: Update.
	* remote-fileio.c: Update.
	* remote.c: Update.
	* riscv-tdep.c: Update.
	* rs6000-aix-tdep.c: Update.
	* rs6000-tdep.c: Update.
	* rust-exp.y: Update.
	* rust-lang.c: Update.
	* s390-tdep.c: Update.
	* selftest-arch.c: Update.
	* solib-dsbt.c: Update.
	* solib-frv.c: Update.
	* solib-spu.c: Update.
	* solib-svr4.c: Update.
	* solib.c: Update.
	* sparc64-linux-tdep.c: Update.
	* stack.c: Update.
	* symfile-mem.c: Update.
	* symmisc.c: Update.
	* target.c: Update.
	* thread.c: Update.
	* top.c: Update.
	* tracefile-tfile.c: Update.
	* tui/tui.c: Update.
	* typeprint.c: Update.
	* unittests/cli-utils-selftests.c: Update.
	* unittests/parse-connection-spec-selftests.c: Update.
	* valops.c: Update.
	* valprint.c: Update.
	* value.c: Update.
	* varobj.c: Update.
	* windows-nat.c: Update.
	* x86-linux-nat.c: Update.
	* xml-support.c: Update.

gdb/gdbserver/ChangeLog
2019-04-08  Tom Tromey  <tom@tromey.com>

	* gdbreplay.c: Update.
	* linux-low.c: Update.
	* server.c: Update.

This rewrites gdb's TRY/CATCH to plain C++ try/catch.  The patch was
largely written by script, though one change (to a comment in
common-exceptions.h) was reverted by hand.

gdb/ChangeLog
2019-04-08  Tom Tromey  <tom@tromey.com>

	* xml-support.c: Use C++ exception handling.
	* x86-linux-nat.c: Use C++ exception handling.
	* windows-nat.c: Use C++ exception handling.
	* varobj.c: Use C++ exception handling.
	* value.c: Use C++ exception handling.
	* valprint.c: Use C++ exception handling.
	* valops.c: Use C++ exception handling.
	* unittests/parse-connection-spec-selftests.c: Use C++ exception
	handling.
	* unittests/cli-utils-selftests.c: Use C++ exception handling.
	* typeprint.c: Use C++ exception handling.
	* tui/tui.c: Use C++ exception handling.
	* tracefile-tfile.c: Use C++ exception handling.
	* top.c: Use C++ exception handling.
	* thread.c: Use C++ exception handling.
	* target.c: Use C++ exception handling.
	* symmisc.c: Use C++ exception handling.
	* symfile-mem.c: Use C++ exception handling.
	* stack.c: Use C++ exception handling.
	* sparc64-linux-tdep.c: Use C++ exception handling.
	* solib.c: Use C++ exception handling.
	* solib-svr4.c: Use C++ exception handling.
	* solib-spu.c: Use C++ exception handling.
	* solib-frv.c: Use C++ exception handling.
	* solib-dsbt.c: Use C++ exception handling.
	* selftest-arch.c: Use C++ exception handling.
	* s390-tdep.c: Use C++ exception handling.
	* rust-lang.c: Use C++ exception handling.
	* rust-exp.y: Use C++ exception handling.
	* rs6000-tdep.c: Use C++ exception handling.
	* rs6000-aix-tdep.c: Use C++ exception handling.
	* riscv-tdep.c: Use C++ exception handling.
	* remote.c: Use C++ exception handling.
	* remote-fileio.c: Use C++ exception handling.
	* record-full.c: Use C++ exception handling.
	* record-btrace.c: Use C++ exception handling.
	* python/python.c: Use C++ exception handling.
	* python/py-value.c: Use C++ exception handling.
	* python/py-utils.c: Use C++ exception handling.
	* python/py-unwind.c: Use C++ exception handling.
	* python/py-type.c: Use C++ exception handling.
	* python/py-symbol.c: Use C++ exception handling.
	* python/py-record.c: Use C++ exception handling.
	* python/py-record-btrace.c: Use C++ exception handling.
	* python/py-progspace.c: Use C++ exception handling.
	* python/py-prettyprint.c: Use C++ exception handling.
	* python/py-param.c: Use C++ exception handling.
	* python/py-objfile.c: Use C++ exception handling.
	* python/py-linetable.c: Use C++ exception handling.
	* python/py-lazy-string.c: Use C++ exception handling.
	* python/py-infthread.c: Use C++ exception handling.
	* python/py-inferior.c: Use C++ exception handling.
	* python/py-gdb-readline.c: Use C++ exception handling.
	* python/py-framefilter.c: Use C++ exception handling.
	* python/py-frame.c: Use C++ exception handling.
	* python/py-finishbreakpoint.c: Use C++ exception handling.
	* python/py-cmd.c: Use C++ exception handling.
	* python/py-breakpoint.c: Use C++ exception handling.
	* python/py-arch.c: Use C++ exception handling.
	* printcmd.c: Use C++ exception handling.
	* ppc-linux-tdep.c: Use C++ exception handling.
	* parse.c: Use C++ exception handling.
	* p-valprint.c: Use C++ exception handling.
	* objc-lang.c: Use C++ exception handling.
	* mi/mi-main.c: Use C++ exception handling.
	* mi/mi-interp.c: Use C++ exception handling.
	* mi/mi-cmd-stack.c: Use C++ exception handling.
	* mi/mi-cmd-break.c: Use C++ exception handling.
	* main.c: Use C++ exception handling.
	* linux-thread-db.c: Use C++ exception handling.
	* linux-tdep.c: Use C++ exception handling.
	* linux-nat.c: Use C++ exception handling.
	* linux-fork.c: Use C++ exception handling.
	* linespec.c: Use C++ exception handling.
	* language.c: Use C++ exception handling.
	* jit.c: Use C++ exception handling.
	* infrun.c: Use C++ exception handling.
	* infcmd.c: Use C++ exception handling.
	* infcall.c: Use C++ exception handling.
	* inf-loop.c: Use C++ exception handling.
	* i386-tdep.c: Use C++ exception handling.
	* i386-linux-tdep.c: Use C++ exception handling.
	* guile/scm-value.c: Use C++ exception handling.
	* guile/scm-type.c: Use C++ exception handling.
	* guile/scm-symtab.c: Use C++ exception handling.
	* guile/scm-symbol.c: Use C++ exception handling.
	* guile/scm-pretty-print.c: Use C++ exception handling.
	* guile/scm-ports.c: Use C++ exception handling.
	* guile/scm-param.c: Use C++ exception handling.
	* guile/scm-math.c: Use C++ exception handling.
	* guile/scm-lazy-string.c: Use C++ exception handling.
	* guile/scm-frame.c: Use C++ exception handling.
	* guile/scm-disasm.c: Use C++ exception handling.
	* guile/scm-cmd.c: Use C++ exception handling.
	* guile/scm-breakpoint.c: Use C++ exception handling.
	* guile/scm-block.c: Use C++ exception handling.
	* guile/guile-internal.h: Use C++ exception handling.
	* gnu-v3-abi.c: Use C++ exception handling.
	* gdbtypes.c: Use C++ exception handling.
	* frame.c: Use C++ exception handling.
	* frame-unwind.c: Use C++ exception handling.
	* fbsd-tdep.c: Use C++ exception handling.
	* f-valprint.c: Use C++ exception handling.
	* exec.c: Use C++ exception handling.
	* event-top.c: Use C++ exception handling.
	* event-loop.c: Use C++ exception handling.
	* eval.c: Use C++ exception handling.
	* dwarf2read.c: Use C++ exception handling.
	* dwarf2loc.c: Use C++ exception handling.
	* dwarf2-frame.c: Use C++ exception handling.
	* dwarf2-frame-tailcall.c: Use C++ exception handling.
	* dwarf-index-write.c: Use C++ exception handling.
	* dwarf-index-cache.c: Use C++ exception handling.
	* dtrace-probe.c: Use C++ exception handling.
	* disasm-selftests.c: Use C++ exception handling.
	* darwin-nat.c: Use C++ exception handling.
	* cp-valprint.c: Use C++ exception handling.
	* cp-support.c: Use C++ exception handling.
	* cp-abi.c: Use C++ exception handling.
	* corelow.c: Use C++ exception handling.
	* completer.c: Use C++ exception handling.
	* compile/compile-object-run.c: Use C++ exception handling.
	* compile/compile-object-load.c: Use C++ exception handling.
	* compile/compile-cplus-symbols.c: Use C++ exception handling.
	* compile/compile-c-symbols.c: Use C++ exception handling.
	* common/selftest.c: Use C++ exception handling.
	* common/new-op.c: Use C++ exception handling.
	* cli/cli-script.c: Use C++ exception handling.
	* cli/cli-interp.c: Use C++ exception handling.
	* cli/cli-cmds.c: Use C++ exception handling.
	* c-varobj.c: Use C++ exception handling.
	* btrace.c: Use C++ exception handling.
	* breakpoint.c: Use C++ exception handling.
	* break-catch-throw.c: Use C++ exception handling.
	* arch-utils.c: Use C++ exception handling.
	* amd64-tdep.c: Use C++ exception handling.
	* ada-valprint.c: Use C++ exception handling.
	* ada-typeprint.c: Use C++ exception handling.
	* ada-lang.c: Use C++ exception handling.
	* aarch64-tdep.c: Use C++ exception handling.

gdb/gdbserver/ChangeLog
2019-04-08  Tom Tromey  <tom@tromey.com>

	* server.c: Use C++ exception handling.
	* linux-low.c: Use C++ exception handling.
	* gdbreplay.c: Use C++ exception handling.

py-ref.h can really only be included from a specific spot in
python-internal.h.  The other includes are not useful, and cause
compilation errors if the includes are ever sorted.  So, remove these
includes.

Arguably, py-ref.h should simply not be a separate header.

gdb/ChangeLog
2019-01-22  Tom Tromey  <tom@tromey.com>

	* python/py-arch.c: Do not include py-ref.h.
	* python/py-bpevent.c: Do not include py-ref.h.
	* python/py-cmd.c: Do not include py-ref.h.
	* python/py-continueevent.c: Do not include py-ref.h.
	* python/py-event.h: Do not include py-ref.h.
	* python/py-evtregistry.c: Do not include py-ref.h.
	* python/py-finishbreakpoint.c: Do not include py-ref.h.
	* python/py-frame.c: Do not include py-ref.h.
	* python/py-framefilter.c: Do not include py-ref.h.
	* python/py-function.c: Do not include py-ref.h.
	* python/py-infevents.c: Do not include py-ref.h.
	* python/py-linetable.c: Do not include py-ref.h.
	* python/py-objfile.c: Do not include py-ref.h.
	* python/py-param.c: Do not include py-ref.h.
	* python/py-prettyprint.c: Do not include py-ref.h.
	* python/py-progspace.c: Do not include py-ref.h.
	* python/py-symbol.c: Do not include py-ref.h.
	* python/py-symtab.c: Do not include py-ref.h.
	* python/py-type.c: Do not include py-ref.h.
	* python/py-unwind.c: Do not include py-ref.h.
	* python/py-utils.c: Do not include py-ref.h.
	* python/py-value.c: Do not include py-ref.h.
	* python/py-varobj.c: Do not include py-ref.h.
	* python/py-xmethods.c: Do not include py-ref.h.
	* python/python.c: Do not include py-ref.h.
	* varobj.c: Do not include py-ref.h.

This changes the all_objfiles range adapter to be a method on the
program space, and fixes up all the users.

gdb/ChangeLog
2019-01-17  Tom Tromey  <tom@tromey.com>

	* progspace.h (program_space) <objfiles_range>: New typedef.
	<objfiles>: New method.
	<objfiles_head>: Rename from objfiles.
	(object_files): Update.
	* guile/scm-progspace.c (gdbscm_progspace_objfiles): Update.
	* guile/scm-pretty-print.c
	(ppscm_find_pretty_printer_from_objfiles): Update.
	* guile/scm-objfile.c (gdbscm_objfiles): Update.
	* python/py-xmethods.c (gdbpy_get_matching_xmethod_workers):
	Update.
	* python/py-progspace.c (pspy_get_objfiles): Update.
	* python/py-prettyprint.c (find_pretty_printer_from_objfiles):
	Update.
	* python/py-objfile.c (objfpy_lookup_objfile_by_name)
	(objfpy_lookup_objfile_by_build_id): Update.
	* mi/mi-cmd-file.c (mi_cmd_file_list_exec_source_files): Update.
	* windows-tdep.c (windows_iterate_over_objfiles_in_search_order):
	Update.
	* symtab.c (iterate_over_symtabs, matching_obj_sections)
	(expand_symtab_containing_pc, lookup_objfile_from_block)
	(lookup_static_symbol, basic_lookup_transparent_type)
	(find_pc_sect_compunit_symtab, find_symbol_at_address)
	(find_line_symtab, info_sources_command)
	(default_collect_symbol_completion_matches_break_on)
	(make_source_files_completion_list, find_main_name): Update.
	* symmisc.c (print_symbol_bcache_statistics)
	(print_objfile_statistics, maintenance_print_symbols)
	(maintenance_print_msymbols, maintenance_print_objfiles)
	(maintenance_info_symtabs, maintenance_check_symtabs)
	(maintenance_expand_symtabs, maintenance_info_line_tables):
	Update.
	* symfile.c (remove_symbol_file_command, overlay_invalidate_all)
	(find_pc_overlay, find_pc_mapped_section, list_overlays_command)
	(map_overlay_command, unmap_overlay_command)
	(simple_overlay_update, expand_symtabs_matching)
	(map_symbol_filenames): Update.
	* symfile-debug.c (set_debug_symfile): Update.
	* spu-tdep.c (spu_overlay_update, spu_objfile_from_frame):
	Update.
	* source.c (select_source_symtab, forget_cached_source_info):
	Update.
	* solib.c (solib_read_symbols): Update.
	* solib-spu.c (append_ocl_sos): Update.
	* psymtab.c (maintenance_print_psymbols)
	(maintenance_info_psymtabs, maintenance_check_psymtabs): Update.
	* probe.c (parse_probes_in_pspace, find_probe_by_pc): Update.
	* printcmd.c (info_symbol_command): Update.
	* ppc-linux-tdep.c (ppc_linux_spe_context_inferior_created):
	Update.
	* objfiles.h (class all_objfiles): Remove.
	* objfiles.c (have_partial_symbols, have_full_symbols)
	(have_minimal_symbols, qsort_cmp, update_section_map)
	(shared_objfile_contains_address_p)
	(default_iterate_over_objfiles_in_search_order): Update.
	* objc-lang.c (info_selectors_command, info_classes_command)
	(find_methods): Update.
	* minsyms.c (find_solib_trampoline_target): Update.
	* maint.c (maintenance_info_sections)
	(maintenance_translate_address, count_symtabs_and_blocks):
	Update.
	* main.c (captured_main_1): Update.
	* linux-thread-db.c (try_thread_db_load_from_pdir)
	(has_libpthread): Update.
	* linespec.c (iterate_over_all_matching_symtabs)
	(search_minsyms_for_name): Update.
	* jit.c (jit_find_objf_with_entry_addr): Update.
	* hppa-tdep.c (find_unwind_entry)
	(hppa_lookup_stub_minimal_symbol): Update.
	* gcore.c (gcore_create_callback, objfile_find_memory_regions):
	Update.
	* elfread.c (elf_gnu_ifunc_resolve_by_cache)
	(elf_gnu_ifunc_resolve_by_got): Update.
	* dwarf2-frame.c (dwarf2_frame_find_fde): Update.
	* dwarf-index-write.c (save_gdb_index_command): Update.
	* cp-support.c (add_symbol_overload_list_qualified): Update.
	* breakpoint.c (create_overlay_event_breakpoint)
	(create_longjmp_master_breakpoint)
	(create_std_terminate_master_breakpoint)
	(create_exception_master_breakpoint): Update.
	* blockframe.c (find_pc_partial_function): Update.
	* ada-lang.c (ada_lookup_simple_minsym, add_nonlocal_symbols)
	(ada_collect_symbol_completion_matches)
	(ada_add_global_exceptions): Update.

This removes the ALL_PSPACE_OBJFILES macro in favor of ranged for
loops.

gdb/ChangeLog
2019-01-09  Tom Tromey  <tom@tromey.com>

	* probe.c (parse_probes_in_pspace): Use all_objfiles.
	* guile/scm-progspace.c (gdbscm_progspace_objfiles): Use
	all_objfiles.
	* objfiles.h (ALL_PSPACE_OBJFILES): Remove.
	* symmisc.c (print_symbol_bcache_statistics)
	(print_objfile_statistics, maintenance_print_objfiles)
	(maintenance_info_symtabs, maintenance_check_symtabs)
	(maintenance_expand_symtabs, maintenance_info_line_tables): Use
	all_objfiles.
	* source.c (forget_cached_source_info): Use all_objfiles.
	* symfile-debug.c (set_debug_symfile): Use all_objfiles.
	* elfread.c (elf_gnu_ifunc_resolve_by_cache)
	(elf_gnu_ifunc_resolve_by_got): Use all_objfiles.
	* objfiles.c (update_section_map): Use all_objfiles.
	(shared_objfile_contains_address_p): Likewise.
	* psymtab.c (maintenance_info_psymtabs): Use all_objfiles.
	* python/py-progspace.c (pspy_get_objfiles): Use all_objfiles.

This changes some more place in the Python code to use gdbpy_ref
rather than explicit reference counting.  While doing this I found a
latent bug in typy_fields_items -- it was not checking for errors in
one spot.  I also changed valpy_dealloc to use Py_XDECREF rather than
an explicit "if".

gdb/ChangeLog
2019-01-03  Tom Tromey  <tom@tromey.com>

	* python/py-value.c (valpy_dealloc): Use Py_XDECREF.
	* python/py-type.c (typy_fields_items): Use gdbpy_ref.
	* python/py-progspace.c (pspy_set_printers): Use gdbpy_ref.
	(pspy_set_frame_filters, pspy_set_frame_unwinders)
	(pspy_set_type_printers): Likewise.
	* python/py-function.c (fnpy_init): Use gdbpy_ref.
	* python/py-cmd.c (cmdpy_init): Use gdbpy_ref.
	* python/py-objfile.c (objfpy_set_printers): Use gdbpy_ref.
	(objfpy_set_frame_filters, objfpy_set_frame_unwinders)
	(objfpy_set_type_printers): Likewise.

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 changes python_string_to_unicode,
python_string_to_target_python_string, and
host_string_to_python_string to return gdbpy_ref.

gdb/ChangeLog
2018-11-04  Tom Tromey  <tom@tromey.com>

	* python/python.c (gdbpy_parameter_value): Update.
	* python/python-internal.h (python_string_to_unicode)
	(python_string_to_target_python_string)
	(host_string_to_python_string): Return gdbpy_ref.
	* python/py-utils.c (python_string_to_unicode)
	(unicode_to_encoded_python_string)
	(unicode_to_target_python_string)
	(python_string_to_target_string)
	(python_string_to_target_python_string): Return gdbpy_ref.
	(python_string_to_host_string): Update.
	(host_string_to_python_string): Return gdbpy_ref.
	* python/py-symtab.c (stpy_get_filename, stpy_get_producer)
	(stpy_fullname): Update.
	* python/py-progspace.c (pspy_get_filename, pspy_solib_name):
	Update.
	* python/py-prettyprint.c (print_string_repr): Update.
	* python/py-objfile.c (objfpy_get_filename, objfpy_get_username)
	(objfpy_get_build_id): Update.
	* python/py-breakpoint.c (bppy_get_location)
	(bppy_get_expression, bppy_get_condition, bppy_get_commands):
	Update.

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.

This changes objfile_to_objfile_object to return a new references and
fixes up all the uses.

gdb/ChangeLog
2018-09-16  Tom Tromey  <tom@tromey.com>

	* python/py-progspace.c (pspy_get_objfiles): Update.
	* python/python-internal.h (objfile_to_objfile_object): Change
	return type.
	* python/py-newobjfileevent.c (create_new_objfile_event_object):
	Update.
	* python/py-xmethods.c (gdbpy_get_matching_xmethod_workers):
	Update.
	* python/python.c (gdbpy_get_current_objfile): Update.
	(gdbpy_objfiles): Update.
	* python/py-objfile.c (objfpy_get_owner, gdbpy_lookup_objfile):
	Update.
	(objfile_to_objfile_object): Return a new reference.
	* python/py-symtab.c (stpy_get_objfile): Update.
	* python/py-prettyprint.c (find_pretty_printer_from_objfiles):
	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.

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.

gdb/ChangeLog:

        Update copyright year range in all GDB files

Unfortunately, PyGetSetDef's 'name' and 'doc' members are 'char *'
instead of 'const char *', meaning that in order to list-initialize
PyGetSetDef arrays using string literals requires writing explicit
'char *' casts.  For example:

    static PyGetSetDef value_object_getset[] = {
   -  { "address", valpy_get_address, NULL, "The address of the value.",
   +  { (char *) "address", valpy_get_address, NULL,
   +    (char *) "The address of the value.",
	NULL },
   -  { "is_optimized_out", valpy_get_is_optimized_out, NULL,
   -    "Boolean telling whether the value is optimized "
   +  { (char *) "is_optimized_out", valpy_get_is_optimized_out, NULL,
   +    (char *) "Boolean telling whether the value is optimized "
	"out (i.e., not available).",
	NULL },
   -  { "type", valpy_get_type, NULL, "Type of the value.", NULL },
   -  { "dynamic_type", valpy_get_dynamic_type, NULL,
   -    "Dynamic type of the value.", NULL },
   -  { "is_lazy", valpy_get_is_lazy, NULL,
   -    "Boolean telling whether the value is lazy (not fetched yet\n\
   +  { (char *) "type", valpy_get_type, NULL,
   +    (char *) "Type of the value.", NULL },
   +  { (char *) "dynamic_type", valpy_get_dynamic_type, NULL,
   +    (char *) "Dynamic type of the value.", NULL },
   +  { (char *) "is_lazy", valpy_get_is_lazy, NULL,
   +    (char *) "Boolean telling whether the value is lazy (not fetched yet\n\
    from the inferior).  A lazy value is fetched when needed, or when\n\
    the \"fetch_lazy()\" method is called.", NULL },
      {NULL}  /* Sentinel */

We have ~20 such arrays, and I first wrote a patch that fixed all of
them like that...  It's not pretty...

One way to make these a bit less ugly would be add a new macro that
hides the casts, like:

  #define GDBPY_GSDEF(NAME, GET, SET, DOC, CLOSURE) \
     { (char *) NAME, GET, SET, (char *) DOC, CLOSURE }

and then use it like:

    static PyGetSetDef value_object_getset[] = {
       GDBPY_GSDEF ("address", valpy_get_address, NULL,
       		    "The address of the value.", NULL),
       GDBPY_GSDEF ("is_optimized_out", valpy_get_is_optimized_out, NULL,
       		    "Boolean telling whether the value is optimized ", NULL),
      {NULL}  /* Sentinel */
    };

But since we have C++11, which gives us constexpr and list
initialization, I thought of a way that requires no changes where the
arrays are initialized:

We add a new type that extends PyGetSetDef (called gdb_PyGetSetDef),
and add constexpr constructors that accept const 'name' and 'doc', and
then list/aggregate initialization simply "calls" these matching
constructors instead.

I put "calls" in quotes, because given "constexpr", it's all done at
compile time, and there's no overhead either in binary size or at run
time.  In fact, we get identical binaries, before/after this change.

Unlike the fixes that fix some old Python API to match the API of more
recent Python, this switches to using explicit "gdb_PyGetSetDef"
everywhere, just to be clear that we are using our own version of it.

gdb/ChangeLog:
2017-04-05  Pedro Alves  <palves@redhat.com>

	* python/python-internal.h (gdb_PyGetSetDef): New type.
	* python/py-block.c (block_object_getset)
	(breakpoint_object_getset): Now a gdb_PyGetSetDef array.
	* python/py-event.c (event_object_getset)
	(finish_breakpoint_object_getset): Likewise.
	* python/py-inferior.c (inferior_object_getset): Likewise.
	* python/py-infthread.c (thread_object_getset): Likewise.
	* python/py-lazy-string.c (lazy_string_object_getset): Likewise.
	* python/py-linetable.c (linetable_entry_object_getset): Likewise.
	* python/py-objfile.c (objfile_getset): Likewise.
	* python/py-progspace.c (pspace_getset): Likewise.
	* python/py-record-btrace.c (btpy_insn_getset, btpy_call_getset):
	Likewise.
	* python/py-record.c (recpy_record_getset): Likewise.
	* python/py-symbol.c (symbol_object_getset): Likewise.
	* python/py-symtab.c (symtab_object_getset, sal_object_getset):
	Likewise.
	* python/py-type.c (type_object_getset, field_object_getset):
	Likewise.
	* python/py-value.c (value_object_getset): Likewise.

This uses the new gdbpy_ref template to simplify logic in various
parts of the Python layer; for example removing repeated error code or
removing gotos.

gdb/ChangeLog
2017-02-10  Tom Tromey  <tom@tromey.com>

	* python/py-cmd.c (cmdpy_destroyer): Use gdbpy_ref.
	* python/py-breakpoint.c (gdbpy_breakpoint_deleted): Use
	gdbpy_ref.
	* python/py-type.c (field_new): Use gdbpy_ref.
	* python/py-symtab.c (symtab_and_line_to_sal_object): Use
	gdbpy_ref.
	* python/py-progspace.c (pspy_new): Use gdbpy_ref.
	(py_free_pspace): Likewise.
	(pspace_to_pspace_object): Likewise.
	* python/py-objfile.c (objfpy_new): Use gdbpy_ref.
	(py_free_objfile): Likewise.
	(objfile_to_objfile_object): Likewise.
	* python/py-inferior.c (delete_thread_object): Use
	gdbpy_ref.
	(infpy_read_memory): Likewise.
	(py_free_inferior): Likewise.
	* python/py-evtregistry.c (create_eventregistry_object): Use
	gdbpy_ref.
	* python/py-event.c (create_event_object): Use gdbpy_ref.

Change py-progspace.c to use gdbpy_enter.

2017-01-10  Tom Tromey  <tom@tromey.com>

	* python/py-progspace.c (py_free_pspace): Use gdbpy_enter.

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.

This fixes PR python/19438 and PR python/18393.  Both bugs are about
invoking dir() on some Python object implemented by gdb, and getting a
crash.

The crash happens because the dictionary field of these objects was
not initialized.  Apparently what happens is that this field can be
lazily initialized by Python when assigning to an attribute; and it
can also be handled ok when using dir() but without __dict__ defined;
but gdb defines __dict__ because this isn't supplied automatically by
Python.

The docs on this seem rather sparse, but this patch works ok.

An alternative might be to lazily create the dictionary in
gdb_py_generic_dict, but I went with this approach because it seemed
more straightforward.

Built and regtested on x86-64 Fedora 23.

2016-05-23  Tom Tromey  <tom@tromey.com>

	PR python/19438, PR python/18393:
	* python/py-objfile.c (objfpy_initialize): Initialize self->dict.
	* python/py-progspace.c (pspy_initialize): Initialize self->dict.

2016-05-23  Tom Tromey  <tom@tromey.com>

	PR python/19438, PR python/18393:
	* gdb.python/py-progspace.exp: Add "dir" test.
	* gdb.python/py-objfile.exp: Add "dir" test.

gdb/ChangeLog:

	* python/py-utils.c (host_string_to_python_string): New function.
	* python/python-internal.h (host_string_to_python_string): Declare it.
	* python/py-*.c (*): Update all calls to
	PyString_Decode (str, strlen (str), host_charset (), NULL);
	to use host_string_to_python_string instead.

gdb/ChangeLog:

        Update year range in copyright notice of all files.

See previous patch's description.

gdb/ChangeLog:

	* macrocmd.c (print_macro_callback): Add cast(s).
	* macrotab.c (macro_bcache_str): Likewise.
	(new_macro_definition): Likewise.
	* main.c (captured_main): Likewise.
	* maint.c (print_bfd_section_info): Likewise.
	* mdebugread.c (mdebug_build_psymtabs): Likewise.
	(basic_type): Likewise.
	* memattr.c (mem_region_cmp): Likewise.
	* memory-map.c (memory_map_start_memory): Likewise.
	(memory_map_end_memory): Likewise.
	(memory_map_start_property): Likewise.
	(memory_map_end_property): Likewise.
	(clear_result): Likewise.
	* memrange.c (compare_mem_ranges): Likewise.
	* mep-tdep.c (mep_analyze_frame_prologue): Likewise.
	* mi/mi-cmd-var.c (mi_cmd_var_update_iter): Likewise.
	* mi/mi-console.c (mi_console_file_delete): Likewise.
	(mi_console_file_fputs): Likewise.
	(mi_console_raw_packet): Likewise.
	(mi_console_file_flush): Likewise.
	(mi_console_set_raw): Likewise.
	* mi/mi-interp.c (mi_interpreter_resume): Likewise.
	(mi_new_thread): Likewise.
	(mi_thread_exit): Likewise.
	(mi_record_changed): Likewise.
	(mi_inferior_added): Likewise.
	(mi_inferior_appeared): Likewise.
	(mi_inferior_exit): Likewise.
	(mi_inferior_removed): Likewise.
	(mi_interp_data): Likewise.
	(mi_on_normal_stop): Likewise.
	(mi_traceframe_changed): Likewise.
	(mi_tsv_created): Likewise.
	(mi_tsv_deleted): Likewise.
	(mi_tsv_modified): Likewise.
	(mi_breakpoint_created): Likewise.
	(mi_breakpoint_deleted): Likewise.
	(mi_breakpoint_modified): Likewise.
	(mi_output_running_pid): Likewise.
	(mi_inferior_count): Likewise.
	(mi_solib_loaded): Likewise.
	(mi_solib_unloaded): Likewise.
	(mi_command_param_changed): Likewise.
	(mi_memory_changed): Likewise.
	(report_initial_inferior): Likewise.
	(mi_ui_out): Likewise.
	(mi_set_logging): Likewise.
	* mi/mi-main.c (collect_cores): Likewise.
	(print_one_inferior): Likewise.
	(free_vector_of_ints): Likewise.
	(free_splay_tree): Likewise.
	(mi_execute_command): Likewise.
	* mi/mi-out.c (mi_table_body): Likewise.
	(mi_table_end): Likewise.
	(mi_table_header): Likewise.
	(mi_begin): Likewise.
	(mi_end): Likewise.
	(mi_field_int): Likewise.
	(mi_field_string): Likewise.
	(mi_field_fmt): Likewise.
	(mi_flush): Likewise.
	(mi_redirect): Likewise.
	(field_separator): Likewise.
	(mi_open): Likewise.
	(mi_close): Likewise.
	(mi_out_buffered): Likewise.
	(mi_out_rewind): Likewise.
	(mi_out_put): Likewise.
	(mi_version): Likewise.
	(mi_out_data_dtor): Likewise.
	* mi/mi-parse.c (mi_parse_cleanup): Likewise.
	* microblaze-tdep.c (microblaze_frame_cache): Likewise.
	* minidebug.c (lzma_open): Likewise.
	(lzma_pread): Likewise.
	(lzma_close): Likewise.
	(lzma_stat): Likewise.
	* mips-linux-tdep.c (mips_linux_init_abi): Likewise.
	* mips-sde-tdep.c (mips_sde_frame_cache): Likewise.
	(mips_sde_elf_osabi_sniff_abi_tag_sections): Likewise.
	* mips-tdep.c (mips_insn16_frame_cache): Likewise.
	(mips_micro_frame_cache): Likewise.
	(mips_insn32_frame_cache): Likewise.
	(mips_stub_frame_cache): Likewise.
	(gdb_print_insn_mips): Likewise.
	(value_of_mips_user_reg): Likewise.
	(mips_gdbarch_init): Likewise.
	* mips64obsd-tdep.c (mips64obsd_supply_gregset): Likewise.
	* mipsnbsd-tdep.c (mipsnbsd_supply_fpregset): Likewise.
	(mipsnbsd_supply_gregset): Likewise.
	* mn10300-linux-tdep.c (am33_supply_fpregset_method): Likewise.
	(am33_collect_gregset_method): Likewise.
	(am33_collect_fpregset_method): Likewise.
	* mn10300-tdep.c (mn10300_analyze_frame_prologue): Likewise.
	* moxie-tdep.c (moxie_frame_cache): Likewise.
	* msp430-tdep.c (msp430_get_opcode_byte): Likewise.
	(msp430_analyze_frame_prologue): Likewise.
	* mt-tdep.c (mt_frame_unwind_cache): Likewise.
	* nios2-linux-tdep.c (nios2_supply_gregset): Likewise.
	(nios2_collect_gregset): Likewise.
	* nios2-tdep.c (nios2_frame_unwind_cache): Likewise.
	(nios2_stub_frame_cache): Likewise.
	* objc-lang.c (find_methods): Likewise.
	* objfiles.c (objfiles_pspace_data_cleanup): Likewise.
	(get_objfile_pspace_data): Likewise.
	(get_objfile_bfd_data): Likewise.
	(objfile_bfd_data_free): Likewise.
	(add_to_objfile_sections): Likewise.
	(do_free_objfile_cleanup): Likewise.
	(resume_section_map_updates_cleanup): Likewise.
	* opencl-lang.c (builtin_opencl_type): Likewise.
	* osabi.c (generic_elf_osabi_sniff_abi_tag_sections): Likewise.
	* osdata.c (osdata_start_osdata): Likewise.
	(osdata_start_item): Likewise.
	(osdata_start_column): Likewise.
	(osdata_end_column): Likewise.
	(clear_parsing_data): Likewise.
	(osdata_free_cleanup): Likewise.
	* parse.c (type_stack_cleanup): Likewise.
	(exp_uses_objfile_iter): Likewise.
	* ppc-linux-tdep.c (ppc_linux_supply_gregset): Likewise.
	(ppc_linux_collect_gregset): Likewise.
	(ppu2spu_prev_arch): Likewise.
	(ppu2spu_this_id): Likewise.
	(ppu2spu_prev_register): Likewise.
	(ppu2spu_unwind_register): Likewise.
	(ppu2spu_sniffer): Likewise.
	(ppu2spu_dealloc_cache): Likewise.
	(ppc_linux_init_abi): Likewise.
	* ppcfbsd-tdep.c (ppcfbsd_sigtramp_frame_cache): Likewise.
	* ppcobsd-tdep.c (ppcobsd_sigtramp_frame_cache): Likewise.
	* progspace.c (restore_program_space): Likewise.
	* psymtab.c (find_pc_sect_psymtab): Likewise.
	(compare_psymbols): Likewise.
	(psymbol_bcache_full): Likewise.
	(allocate_psymtab): Likewise.
	(discard_psymtabs_upto): Likewise.
	* python/py-block.c (set_block): Likewise.
	(del_objfile_blocks): Likewise.
	* python/py-breakpoint.c (build_bp_list): Likewise.
	* python/py-inferior.c (inferior_to_inferior_object): Likewise.
	(build_inferior_list): Likewise.
	(py_free_inferior): Likewise.
	* python/py-objfile.c (py_free_objfile): Likewise.
	(objfile_to_objfile_object): Likewise.
	* python/py-prettyprint.c (py_restore_tstate): Likewise.
	* python/py-progspace.c (py_free_pspace): Likewise.
	(pspace_to_pspace_object): Likewise.
	* python/py-symbol.c (set_symbol): Likewise.
	(del_objfile_symbols): Likewise.
	* python/py-symtab.c (set_sal): Likewise.
	(set_symtab): Likewise.
	(del_objfile_symtab): Likewise.
	(del_objfile_sal): Likewise.
	* python/py-type.c (save_objfile_types): Likewise.
	(set_type): Likewise.
	* python/py-unwind.c (pyuw_prev_register): Likewise.
	(pyuw_on_new_gdbarch): Likewise.
	* python/py-utils.c (py_decref): Likewise.
	(py_xdecref): Likewise.
	(gdb_py_generic_dict): Likewise.
	* python/py-xmethods.c (gdbpy_free_xmethod_worker_data): Likewise.
	(gdbpy_clone_xmethod_worker_data): Likewise.
	(gdbpy_get_xmethod_arg_types): Likewise.
	(gdbpy_get_xmethod_result_type): Likewise.
	(gdbpy_invoke_xmethod): Likewise.
	* python/python.c (gdbpy_apply_type_printers): Likewise.
	(gdbpy_free_type_printers): Likewise.
	* record-btrace.c (record_btrace_disable_callback): Likewise.
	(bfcache_hash): Likewise.
	(bfcache_eq): Likewise.
	(btrace_get_frame_function): Likewise.
	(record_btrace_frame_unwind_stop_reason): Likewise.
	(record_btrace_frame_this_id): Likewise.
	(record_btrace_frame_prev_register): Likewise.
	(record_btrace_frame_dealloc_cache): Likewise.
	* record-full.c (record_full_message_wrapper): Likewise.
	(record_full_save_cleanups): Likewise.
	* regcache.c (regcache_descr): Likewise.
	(do_regcache_xfree): Likewise.
	(do_regcache_invalidate): Likewise.
	(do_cooked_read): Likewise.
	(regcache_transfer_regset): Likewise.
	* reggroups.c (reggroup_add): Likewise.
	(reggroup_next): Likewise.
	(reggroup_prev): Likewise.
	* remote-fileio.c (do_remote_fileio_request): Likewise.
	* remote-notif.c (remote_async_get_pending_events_handler): Likewise.
	(do_notif_event_xfree): Likewise.
	* remote.c (get_remote_arch_state): Likewise.
	(remote_pspace_data_cleanup): Likewise.
	(get_remote_exec_file): Likewise.
	(set_pspace_remote_exec_file): Likewise.
	(compare_pnums): Likewise.
	(clear_threads_listing_context): Likewise.
	(remote_newthread_step): Likewise.
	(start_thread): Likewise.
	(end_thread): Likewise.
	(remove_child_of_pending_fork): Likewise.
	(remove_stop_reply_for_inferior): Likewise.
	(remove_stop_reply_of_remote_state): Likewise.
	(remote_notif_remove_once_on_match): Likewise.
	(stop_reply_match_ptid_and_ws): Likewise.
	(kill_child_of_pending_fork): Likewise.
	(register_remote_g_packet_guess): Likewise.
	(remote_read_description_p): Likewise.
	(remote_read_description): Likewise.
	(free_actions_list_cleanup_wrapper): Likewise.
	(remote_async_serial_handler): Likewise.
	* rl78-tdep.c (rl78_get_opcode_byte): Likewise.
	(rl78_analyze_frame_prologue): Likewise.
	* rs6000-tdep.c (ppc_supply_gregset): Likewise.
	(ppc_supply_fpregset): Likewise.
	(ppc_supply_vsxregset): Likewise.
	(ppc_supply_vrregset): Likewise.
	(ppc_collect_gregset): Likewise.
	(ppc_collect_fpregset): Likewise.
	(ppc_collect_vsxregset): Likewise.
	(ppc_collect_vrregset): Likewise.
	(e500_move_ev_register): Likewise.
	(do_regcache_raw_write): Likewise.
	(rs6000_frame_cache): Likewise.
	(rs6000_epilogue_frame_cache): Likewise.
	(rs6000_gdbarch_init): Likewise.
	* rx-tdep.c (rx_get_opcode_byte): Likewise.
	(rx_analyze_frame_prologue): Likewise.
	(rx_frame_type): Likewise.
	(rx_frame_sniffer_common): Likewise.
	* s390-linux-tdep.c (s390_check_for_saved): Likewise.
	(s390_frame_unwind_cache): Likewise.
	(s390_stub_frame_unwind_cache): Likewise.
	(s390_sigtramp_frame_unwind_cache): Likewise.
	* score-tdep.c (score_make_prologue_cache): Likewise.
	* sentinel-frame.c (sentinel_frame_prev_register): Likewise.
	(sentinel_frame_prev_arch): Likewise.
	* ser-base.c (fd_event): Likewise.
	(push_event): Likewise.
	(ser_base_write): Likewise.
	* ser-pipe.c (pipe_close): Likewise.
	* serial.c (serial_write): Likewise.
	* sh-tdep.c (sh_frame_cache): Likewise.
	(sh_stub_this_id): Likewise.
	* sh64-tdep.c (sh64_frame_cache): Likewise.
	* solib-aix.c (get_solib_aix_inferior_data): Likewise.
	(library_list_start_library): Likewise.
	(library_list_start_list): Likewise.
	(solib_aix_free_library_list): Likewise.
	* solib-darwin.c (get_darwin_info): Likewise.
	* solib-dsbt.c (get_dsbt_info): Likewise.
	* solib-spu.c (append_ocl_sos): Likewise.
	* solib-svr4.c (svr4_pspace_data_cleanup): Likewise.
	(get_svr4_info): Likewise.
	(library_list_start_library): Likewise.
	(svr4_library_list_start_list): Likewise.
	(hash_probe_and_action): Likewise.
	(equal_probe_and_action): Likewise.
	(svr4_update_solib_event_breakpoint): Likewise.
	(set_solib_svr4_fetch_link_map_offsets): Likewise.
	(svr4_fetch_link_map_offsets): Likewise.
	(svr4_have_link_map_offsets): Likewise.
	* solib-target.c (library_list_start_segment): Likewise.
	(library_list_start_section): Likewise.
	(library_list_start_library): Likewise.
	(library_list_end_library): Likewise.
	(library_list_start_list): Likewise.
	(solib_target_free_library_list): Likewise.
	* solib.c (solib_ops): Likewise.
	(set_solib_ops): Likewise.
	* sparc-sol2-tdep.c (sparc32_sol2_sigtramp_frame_cache): Likewise.
	* sparc-tdep.c (sparc_frame_cache): Likewise.
	(sparc32_frame_cache): Likewise.
	(sparc32_supply_gregset): Likewise.
	(sparc32_collect_gregset): Likewise.
	(sparc32_supply_fpregset): Likewise.
	(sparc32_collect_fpregset): Likewise.
	* sparc64-sol2-tdep.c (sparc64_sol2_sigtramp_frame_cache): Likewise.
	* sparc64-tdep.c (sparc64_supply_gregset): Likewise.
	(sparc64_collect_gregset): Likewise.
	(sparc64_supply_fpregset): Likewise.
	(sparc64_collect_fpregset): Likewise.
	* sparc64fbsd-tdep.c (sparc64fbsd_sigtramp_frame_cache): Likewise.
	* sparc64nbsd-tdep.c (sparc64nbsd_sigcontext_frame_cache): Likewise.
	* sparc64obsd-tdep.c (sparc64obsd_frame_cache): Likewise.
	(sparc64obsd_trapframe_cache): Likewise.
	* sparcnbsd-tdep.c (sparc32nbsd_sigcontext_frame_cache): Likewise.
	* sparcobsd-tdep.c (sparc32obsd_sigtramp_frame_cache): Likewise.
	* spu-multiarch.c (spu_gdbarch): Likewise.
	* spu-tdep.c (spu_frame_unwind_cache): Likewise.
	(spu2ppu_prev_arch): Likewise.
	(spu2ppu_this_id): Likewise.
	(spu2ppu_prev_register): Likewise.
	(spu2ppu_dealloc_cache): Likewise.
	(spu_dis_asm_print_address): Likewise.
	(gdb_print_insn_spu): Likewise.
	(spu_get_overlay_table): Likewise.
	* stabsread.c (rs6000_builtin_type): Likewise.
	* stack.c (do_print_variable_and_value): Likewise.
	* stap-probe.c (get_stap_base_address_1): Likewise.
	* symfile-debug.c (debug_qf_has_symbols): Likewise.
	(debug_qf_find_last_source_symtab): Likewise.
	(debug_qf_forget_cached_source_info): Likewise.
	(debug_qf_map_symtabs_matching_filename): Likewise.
	(debug_qf_lookup_symbol): Likewise.
	(debug_qf_print_stats): Likewise.
	(debug_qf_dump): Likewise.
	(debug_qf_relocate): Likewise.
	(debug_qf_expand_symtabs_for_function): Likewise.
	(debug_qf_expand_all_symtabs): Likewise.
	(debug_qf_expand_symtabs_with_fullname): Likewise.
	(debug_qf_map_matching_symbols): Likewise.
	(debug_qf_expand_symtabs_matching): Likewise.
	(debug_qf_find_pc_sect_compunit_symtab): Likewise.
	(debug_qf_map_symbol_filenames): Likewise.
	(debug_sym_get_probes): Likewise.
	(debug_sym_new_init): Likewise.
	(debug_sym_init): Likewise.
	(debug_sym_read): Likewise.
	(debug_sym_read_psymbols): Likewise.
	(debug_sym_finish): Likewise.
	(debug_sym_offsets): Likewise.
	(debug_sym_read_linetable): Likewise.
	(debug_sym_relocate): Likewise.
	(uninstall_symfile_debug_logging): Likewise.
	* symfile-mem.c (symbol_file_add_from_memory_wrapper): Likewise.
	* symfile.c (place_section): Likewise.
	(add_section_size_callback): Likewise.
	(load_progress): Likewise.
	(load_section_callback): Likewise.
	(clear_memory_write_data): Likewise.
	(allocate_symtab): Likewise.
	* symmisc.c (maintenance_expand_file_matcher): Likewise.
	* symtab.c (lookup_symtab_callback): Likewise.
	(hash_demangled_name_entry): Likewise.
	(eq_demangled_name_entry): Likewise.
	(get_symbol_cache): Likewise.
	(symbol_cache_cleanup): Likewise.
	(set_symbol_cache_size): Likewise.
	(symbol_cache_flush): Likewise.
	(maintenance_print_symbol_cache): Likewise.
	(maintenance_print_symbol_cache_statistics): Likewise.
	(delete_filename_seen_cache): Likewise.
	(output_partial_symbol_filename): Likewise.
	(search_symbols_file_matches): Likewise.
	(search_symbols_name_matches): Likewise.
	(do_free_completion_list): Likewise.
	(maybe_add_partial_symtab_filename): Likewise.
	(get_main_info): Likewise.
	(main_info_cleanup): Likewise.
	* target-dcache.c (target_dcache_cleanup): Likewise.
	(target_dcache_init_p): Likewise.
	(target_dcache_invalidate): Likewise.
	(target_dcache_get): Likewise.
	(target_dcache_get_or_init): Likewise.
	* target-descriptions.c (target_find_description): Likewise.
	(tdesc_find_type): Likewise.
	(tdesc_data_cleanup): Likewise.
	(tdesc_find_arch_register): Likewise.
	(tdesc_register_name): Likewise.
	(tdesc_register_type): Likewise.
	(tdesc_register_reggroup_p): Likewise.
	(set_tdesc_pseudo_register_name): Likewise.
	(set_tdesc_pseudo_register_type): Likewise.
	(set_tdesc_pseudo_register_reggroup_p): Likewise.
	(tdesc_use_registers): Likewise.
	(free_target_description): Likewise.
	* target-memory.c (compare_block_starting_address): Likewise.
	(cleanup_request_data): Likewise.
	(cleanup_write_requests_vector): Likewise.
	* target.c (open_target): Likewise.
	(cleanup_restore_target_terminal): Likewise.
	(free_memory_read_result_vector): Likewise.
	* thread.c (disable_thread_stack_temporaries): Likewise.
	(finish_thread_state_cleanup): Likewise.
	(do_restore_current_thread_cleanup): Likewise.
	(restore_current_thread_cleanup_dtor): Likewise.
	(set_thread_refcount): Likewise.
	(tp_array_compar): Likewise.
	(do_captured_thread_select): Likewise.
	* tic6x-tdep.c (tic6x_frame_unwind_cache): Likewise.
	(tic6x_stub_this_id): Likewise.
	* tilegx-tdep.c (tilegx_frame_cache): Likewise.
	* top.c (do_restore_instream_cleanup): Likewise.
	(gdb_readline_wrapper_cleanup): Likewise.
	(kill_or_detach): Likewise.
	(print_inferior_quit_action): Likewise.
	* tracefile-tfile.c (match_blocktype): Likewise.
	(build_traceframe_info): Likewise.
	* tracefile.c (trace_file_writer_xfree): Likewise.
	* tracepoint.c (memrange_cmp): Likewise.
	(do_collect_symbol): Likewise.
	(do_clear_collection_list): Likewise.
	(do_restore_current_traceframe_cleanup): Likewise.
	(restore_current_traceframe_cleanup_dtor): Likewise.
	(free_current_marker): Likewise.
	(traceframe_info_start_memory): Likewise.
	(traceframe_info_start_tvar): Likewise.
	(free_result): Likewise.
	* tramp-frame.c (tramp_frame_cache): Likewise.
	* tui/tui-file.c (tui_file_delete): Likewise.
	(tui_fileopen): Likewise.
	(tui_sfileopen): Likewise.
	(tui_file_isatty): Likewise.
	(tui_file_rewind): Likewise.
	(tui_file_put): Likewise.
	(tui_file_fputs): Likewise.
	(tui_file_get_strbuf): Likewise.
	(tui_file_adjust_strbuf): Likewise.
	(tui_file_flush): Likewise.
	* tui/tui-layout.c (make_command_window): Likewise.
	(make_data_window): Likewise.
	(show_source_disasm_command): Likewise.
	(show_data): Likewise.
	(make_source_or_disasm_window): Likewise.
	(show_source_or_disasm_and_command): Likewise.
	* tui/tui-out.c (tui_field_int): Likewise.
	(tui_field_string): Likewise.
	(tui_field_fmt): Likewise.
	(tui_text): Likewise.
	* typeprint.c (hash_typedef_field): Likewise.
	(eq_typedef_field): Likewise.
	(do_free_typedef_hash): Likewise.
	(copy_typedef_hash_element): Likewise.
	(do_free_global_table): Likewise.
	(find_global_typedef): Likewise.
	(find_typedef_in_hash): Likewise.
	* ui-file.c (ui_file_write_for_put): Likewise.
	(do_ui_file_xstrdup): Likewise.
	(mem_file_delete): Likewise.
	(mem_file_rewind): Likewise.
	(mem_file_put): Likewise.
	(mem_file_write): Likewise.
	(stdio_file_delete): Likewise.
	(stdio_file_flush): Likewise.
	(stdio_file_read): Likewise.
	(stdio_file_write): Likewise.
	(stdio_file_write_async_safe): Likewise.
	(stdio_file_fputs): Likewise.
	(stdio_file_isatty): Likewise.
	(stdio_file_fseek): Likewise.
	(tee_file_delete): Likewise.
	(tee_file_flush): Likewise.
	(tee_file_write): Likewise.
	(tee_file_fputs): Likewise.
	(tee_file_isatty): Likewise.
	* ui-out.c (do_cleanup_table_end): Likewise.
	(do_cleanup_end): Likewise.
	* user-regs.c (user_reg_add): Likewise.
	(user_reg_map_name_to_regnum): Likewise.
	(usernum_to_user_reg): Likewise.
	(maintenance_print_user_registers): Likewise.
	* utils.c (do_bfd_close_cleanup): Likewise.
	(do_fclose_cleanup): Likewise.
	(do_obstack_free): Likewise.
	(do_ui_file_delete): Likewise.
	(do_ui_out_redirect_pop): Likewise.
	(do_free_section_addr_info): Likewise.
	(restore_integer): Likewise.
	(do_unpush_target): Likewise.
	(do_htab_delete_cleanup): Likewise.
	(do_restore_ui_file): Likewise.
	(do_value_free): Likewise.
	(do_free_so): Likewise.
	(free_current_contents): Likewise.
	(do_regfree_cleanup): Likewise.
	(core_addr_hash): Likewise.
	(core_addr_eq): Likewise.
	(do_free_char_ptr_vec): Likewise.
	* v850-tdep.c (v850_frame_cache): Likewise.
	* varobj.c (do_free_variable_cleanup): Likewise.
	* vax-tdep.c (vax_supply_gregset): Likewise.
	(vax_frame_cache): Likewise.
	* vaxobsd-tdep.c (vaxobsd_sigtramp_frame_cache): Likewise.
	* xml-support.c (gdb_xml_body_text): Likewise.
	(gdb_xml_values_cleanup): Likewise.
	(gdb_xml_start_element): Likewise.
	(gdb_xml_start_element_wrapper): Likewise.
	(gdb_xml_end_element): Likewise.
	(gdb_xml_end_element_wrapper): Likewise.
	(gdb_xml_cleanup): Likewise.
	(gdb_xml_fetch_external_entity): Likewise.
	(gdb_xml_parse_attr_enum): Likewise.
	(xinclude_start_include): Likewise.
	(xinclude_end_include): Likewise.
	(xml_xinclude_default): Likewise.
	(xml_xinclude_start_doctype): Likewise.
	(xml_xinclude_end_doctype): Likewise.
	(xml_xinclude_cleanup): Likewise.
	(xml_fetch_content_from_file): Likewise.
	* xml-syscall.c (free_syscalls_info): Likewise.
	(syscall_start_syscall): Likewise.
	* xml-tdesc.c (tdesc_end_arch): Likewise.
	(tdesc_end_osabi): Likewise.
	(tdesc_end_compatible): Likewise.
	(tdesc_start_target): Likewise.
	(tdesc_start_feature): Likewise.
	(tdesc_start_reg): Likewise.
	(tdesc_start_union): Likewise.
	(tdesc_start_struct): Likewise.
	(tdesc_start_flags): Likewise.
	(tdesc_start_field): Likewise.
	(tdesc_start_vector): Likewise.
	(fetch_available_features_from_target): Likewise.
	* xstormy16-tdep.c (xstormy16_frame_cache): Likewise.
	* xtensa-tdep.c (xtensa_supply_gregset): Likewise.
	(xtensa_frame_cache): Likewise.
	(xtensa_frame_prev_register): Likewise.
	(xtensa_extract_return_value): Likewise.

gdb/ChangeLog:

	* Makefile.in (SUBDIR_PYTHON_OBJS): Add py-unwind.o.
	(SUBDIR_PYTHON_SRCS): Add py-unwind.c.
	(py-unwind.o): New recipe.
	* NEWS: mention Python frame unwinding.
	* data-directory/Makefile.in (PYTHON_FILE_LIST): Add
	gdb/unwinder.py and gdb/command/unwinder.py
	* python/lib/gdb/__init__.py (packages): Add frame_unwinders
	list.
	(execute_unwinders): New function.
	* python/lib/gdb/command/unwinders.py: New file.
	* python/lib/gdb/unwinder.py: New file.
	* python/py-objfile.c (objfile_object): Add frame_unwinders field.
	(objfpy_dealloc): Decrement frame_unwinders reference count.
	(objfpy_initialize): Create frame_unwinders list.
	(objfpy_get_frame_unwinders): New function.
	(objfpy_set_frame_unwinders): Ditto.
	(objfile_getset): Add frame_unwinders attribute to Objfile.
	* python/py-progspace.c (pspace_object): Add frame_unwinders field.
	(pspy_dealloc): Decrement frame_unwinders reference count.
	(pspy_initialize): Create frame_unwinders list.
	(pspy_get_frame_unwinders): New function.
	(pspy_set_frame_unwinders): Ditto.
	(pspy_getset): Add frame_unwinders attribute to gdb.Progspace.
	* python/py-unwind.c: New file.
	* python/python-internal.h (pspy_get_name_unwinders): New prototype.
	(objpy_get_frame_unwinders): New prototype.
	(gdbpy_initialize_unwind): New prototype.
	* python/python.c (gdbpy_apply_type_printers): Call
	gdbpy_initialize_unwind.

gdb/doc/ChangeLog:

	* doc/python.texi (Writing a Frame Unwinder in Python): Add
	section.

gdb/testsuite/ChangeLog:

	* gdb.python/py-unwind-maint.c: New file.
	* gdb.python/py-unwind-maint.exp: New test.
	* gdb.python/py-unwind-maint.py: New file.
	* gdb.python/py-unwind.c: New file.
	* gdb.python/py-unwind.exp: New test.
	* gdb.python/py-unwind.py: New test.

In C, we can forward declare static structure instances.  That doesn't
work in C++ though.  C++ treats these as definitions.  So then the
compiler complains about symbol redefinition, like:

 src/gdb/elfread.c:1569:29: error: redefinition of ‘const sym_fns elf_sym_fns_lazy_psyms’
 src/gdb/elfread.c:53:29: error: ‘const sym_fns elf_sym_fns_lazy_psyms’ previously declared here

The intent of static here is naturally to avoid making these objects
visible outside the compilation unit.  The equivalent in C++ would be
to instead define the objects in the anonymous namespace.  But given
that it's desirable to leave the codebase compiling as both C and C++
for a while, this just makes the objects extern.

(base_breakpoint_ops is already declared in breakpoint.h, so we can
just remove the forward declare from breakpoint.c)

gdb/ChangeLog:
2015-02-11  Tom Tromey  <tromey@redhat.com>
	    Pedro Alves <palves@redhat.com>

	* breakpoint.c (base_breakpoint_ops): Delete.
	* dwarf2loc.c (dwarf_expr_ctx_funcs): Make extern.
	* elfread.c (elf_sym_fns_gdb_index, elf_sym_fns_lazy_psyms): Make extern.
	* guile/guile.c (guile_extension_script_ops, guile_extension_ops): Make extern.
	* ppcnbsd-tdep.c (ppcnbsd2_sigtramp): Make extern.
	* python/py-arch.c (arch_object_type): Make extern.
	* python/py-block.c (block_syms_iterator_object_type): Make extern.
	* python/py-bpevent.c (breakpoint_event_object_type): Make extern.
	* python/py-cmd.c (cmdpy_object_type): Make extern.
	* python/py-continueevent.c (continue_event_object_type)
	* python/py-event.h (GDBPY_NEW_EVENT_TYPE): Remove 'qual'
	parameter.  Update all callers.
	* python/py-evtregistry.c (eventregistry_object_type): Make extern.
	* python/py-exitedevent.c (exited_event_object_type): Make extern.
	* python/py-finishbreakpoint.c (finish_breakpoint_object_type): Make extern.
	* python/py-function.c (fnpy_object_type): Make extern.
	* python/py-inferior.c (inferior_object_type, membuf_object_type): Make extern.
	* python/py-infevents.c (call_pre_event_object_type)
	(inferior_call_post_event_object_type).
	(memory_changed_event_object_type): Make extern.
	* python/py-infthread.c (thread_object_type): Make extern.
	* python/py-lazy-string.c (lazy_string_object_type): Make extern.
	* python/py-linetable.c (linetable_entry_object_type)
	(linetable_object_type, ltpy_iterator_object_type): Make extern.
	* python/py-newobjfileevent.c (new_objfile_event_object_type)
	(clear_objfiles_event_object_type): Make extern.
	* python/py-objfile.c (objfile_object_type): Make extern.
	* python/py-param.c (parmpy_object_type): Make extern.
	* python/py-progspace.c (pspace_object_type): Make extern.
	* python/py-signalevent.c (signal_event_object_type): Make extern.
	* python/py-symtab.c (symtab_object_type, sal_object_type): Make extern.
	* python/py-type.c (type_object_type, field_object_type)
	(type_iterator_object_type): Make extern.
	* python/python.c (python_extension_script_ops)
	(python_extension_ops): Make extern.
	* stap-probe.c (stap_probe_ops): Make extern.

gdb/ChangeLog:

        Update year range in copyright notice of all files.

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.

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.