On i386, since GOT reference is needed to access global symbols in PIE,
those symbols are made dynamic. Crash happens when there is a reference
to the same global symbol with a different symbol type in a shared
object. Since mixing different types of the same symbol doesn't work in
general, this patch skips those tests on i386 as well as compiles non-PIE
indirect5 and indirect6 tests with $NOPIE_LDFLAGS and $NOPIE_CFLAGS.
PR ld/21402
* testsuite/ld-elf/indirect.exp: Pass $NOPIE_LDFLAGS and
$NOPIE_CFLAGS to non-PIE indirect5 and indirect6 tests. Skip
PIE indirect5 and indirect6 tests on i386.
Do not require forced local (STB_LOCAL) symbols to have a definition in
a regular file to be considered to resolve local to the current module,
matching `elf_link_renumber_local_hash_table_dynsyms'. In the absence
of a regular definition any reference to a STB_LOCAL symbol will have to
be garbage collected along with the undefined symbol itself, or the link
will eventually fail. Either way the symbol concerned is not going to
be external.
bfd/
* elflink.c (_bfd_elf_symbol_refs_local_p): Always return TRUE
if forced local.
Complement commit 3807734dbe ("PR ld/15428: MIPS/LD/testsuite:
Un-KFAIL `__ehdr_start' test 2") and join tests that do not need to be
split anymore.
ld/
* testsuite/ld-mips-elf/mips-elf.exp: Join `__ehdr_start' tests.
Move the comment about dynamic symbol sorting next to where it happens.
bfd/
* elfxx-mips.c (_bfd_mips_elf_final_link): Reorder comment about
dynamic symbol sorting.
We need to make an IR symbol visible if it is defined in an IR object
and referenced in a dynamic object. When --as-needed is used, since
linker removes the IR symbol reference of the dynamic object if the
dynamic object isn't needed in the first pass, the IR definition isn't
visible to the dynamic object even if the dynamic object becomes needed
in the second pass. Add dynamic_ref_after_ir_def to bfd_link_hash_entry
to track IR symbol which is defined in an IR object and later referenced
in a dynamic object. dynamic_ref_after_ir_def is preserved when restoring
the symbol table for unneeded dynamic object.
bfd/
PR ld/21382
* elflink.c (elf_link_add_object_symbols): Preserve
dynamic_ref_after_ir_def when restoring the symbol table for
unneeded dynamic object.
include/
PR ld/21382
* bfdlink.h (bfd_link_hash_entry): Add dynamic_ref_after_ir_def.
ld/
PR ld/21382
* plugin.c (is_visible_from_outside): Symbol may be visible
from outside if dynamic_ref_after_ir_def is set.
(plugin_notice): Set dynamic_ref_after_ir_def if the symbol is
defined in an IR object and referenced in a dynamic object.
* testsuite/ld-plugin/lto.exp: Run PR ld/21382 tests.
* testsuite/ld-plugin/pr21382a.c: New file.
* testsuite/ld-plugin/pr21382b.c: Likewise.
Since undefined IFUNC symbol is treated as normal FUNC symbol, don't
abort on undefined IFUNC symbol in the second PLT.
bfd/
PR ld/21401
* elf64-x86-64.c (elf_x86_64_finish_dynamic_symbol): Don't abort
on on undefined IFUNC symbol in the second PLT.
ld/
PR ld/21401
* testsuite/ld-ifunc/ifunc.exp: Add a libtest-2-now.so test with
-z now.
This patch fixes an internal error exposed by a test that does
something like:
define kill-and-remove
kill inferiors 2
remove-inferiors 2
end
# Start one inferior.
start
# Start another inferior.
add-inferior 2
inferior 2
start
# Kill and remove inferior 1 while inferior 2 is selected.
thread apply 1.1 kill-and-remove
The internal error looks like this:
Thread 1.1 (Thread 0x7ffff7fc2700 (LWP 20677)):
[Switching to inferior 1 [process 20677] (gdb/testsuite/outputs/gdb.threads/threadapply/threadapply)]
[Switching to thread 1.1 (Thread 0x7ffff7fc2700 (LWP 20677))]
#0 main () at src/gdb/testsuite/gdb.threads/threadapply.c:38
38 for (i = 0; i < NUM; i++)
src/gdb/inferior.c:66: internal-error: void set_current_inferior(inferior*): Assertion `inf != NULL' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n) FAIL: gdb.threads/threadapply.exp: kill_and_remove_inferior: try kill-and-remove: thread apply 1.1 kill-and-remove (GDB internal error)
There are several problems around this area of the code. One is that
in do_restore_current_thread_cleanup, we do a look up of inferior by
ptid, which can find the wrong inferior if the previously selected
inferior exited and some other inferior was started with a reused pid
(rare, but still...).
The other problem is that the "remove-inferiors" command rejects
attempts to remove the current inferior, but when we get to
"remove-inferiors" in a "thread apply THR remove-inferiors 2" command,
the current inferior is the inferior of thread THR, not the previously
selected inferior, so if the previously selected inferior was inferior
2, that command still manages to wipe it, and then gdb restores the
old selected inferior, which is now a dangling pointer...
So the fix here is:
- Make make_cleanup_restore_current_thread store a pointer to the
previously selected inferior directly, and use it directly instead
of doing ptid look ups.
- Add a refcount to inferiors, very similar to thread_info's refcount,
that is incremented/decremented by
make_cleanup_restore_current_thread, and checked before deleting an
inferior. To avoid duplication, a new refcounted_object type is
added, that both thread_info and inferior inherit from.
gdb/ChangeLog:
2017-04-19 Pedro Alves <palves@redhat.com>
* common/refcounted-object.h: New file.
* gdbthread.h: Include "common/refcounted-object.h".
(thread_info): Inherit from refcounted_object and add comments.
(thread_info::incref, thread_info::decref)
(thread_info::m_refcount): Delete.
(thread_info::deletable): Use the refcounted_object::refcount()
method.
* inferior.c (current_inferior_): Add comment.
(set_current_inferior): Increment/decrement refcounts.
(prune_inferiors, remove_inferior_command): Skip inferiors marked
not-deletable instead of comparing with the current inferior.
(initialize_inferiors): Increment the initial inferior's refcount.
* inferior.h (struct inferior): Forward declare.
Include "common/refcounted-object.h".
(current_inferior, set_current_inferior): Move declaration to
before struct inferior's definition, and fix comment.
(inferior): Inherit from refcounted_object. Add comments.
* thread.c (switch_to_thread_no_regs): Reference the thread's
inferior pointer directly instead of doing a ptid lookup.
(switch_to_no_thread): New function.
(switch_to_thread(thread_info *)): New function, factored out
from ...
(switch_to_thread(ptid_t)): ... this.
(restore_current_thread): Delete.
(current_thread_cleanup): Remove 'inf_id' and 'was_removable'
fields, and add 'inf' field.
(do_restore_current_thread_cleanup): Check whether old->inf is
alive instead of looking up an inferior by ptid. Use
switch_to_thread and switch_to_no_thread.
(restore_current_thread_cleanup_dtor): Use old->inf directly
instead of lookup up an inferior by id. Decref the inferior.
Don't restore 'removable'.
(make_cleanup_restore_current_thread): Same the inferior pointer
in old, instead of the inferior number. Incref the inferior.
Don't save/clear 'removable'.
gdb/testsuite/ChangeLog:
2017-04-19 Pedro Alves <palves@redhat.com>
* gdb.threads/threadapply.exp (kill_and_remove_inferior): New
procedure.
(top level): Call it.
* lib/gdb.exp (gdb_define_cmd): New procedure.
I left making inferior::detaching a bool to a separate patch, because
doing that makes a make_cleanup_restore_integer call in
infrun.c:prepare_for_detach no longer compile (passing a 'bool *' when
an 'int *' is expected). Since we want to get rid of cleanups anyway,
I looked at converting that to a scoped_restore. However,
prepare_for_detach wants to discard the cleanup on success, and
scoped_restore doesn't have an equivalent for that. So I added one --
I called it "release()" because it seems like a natural fit in the way
standard components call similarly-spirited methods, and, it's also
what the proposal for a generic scope guard calls it too, AFAICS:
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4189.pdf
I've added some scoped_guard unit tests, while at it.
gdb/ChangeLog:
2017-04-19 Pedro Alves <palves@redhat.com>
* Makefile.in (SUBDIR_UNITTESTS_SRCS): Add
unittests/scoped_restore-selftests.c.
(SUBDIR_UNITTESTS_OBS): Add scoped_restore-selftests.o.
* common/scoped_restore.h (scoped_restore_base): Make "class".
(scoped_restore_base::release): New public method.
(scoped_restore_base::scoped_restore_base): New protected ctor.
(scoped_restore_base::m_saved_var): New protected field.
(scoped_restore_tmpl::scoped_restore_tmpl(T*)): Initialize the
scoped_restore_base base class instead of m_saved_var directly.
(scoped_restore_tmpl::scoped_restore_tmpl(T*, T2)): Likewise.
(scoped_restore_tmpl::scoped_restore_tmpl(const
scoped_restore_tmpl<T>&)): Likewise.
(scoped_restore_tmpl::~scoped_restore_tmpl): Use the saved_var
method.
(scoped_restore_tmpl::saved_var): New method.
(scoped_restore_tmpl::m_saved_var): Delete.
* inferior.h (inferior::detaching): Now a bool.
* infrun.c (prepare_for_detach): Use a scoped_restore instead of a
cleanup.
* unittests/scoped_restore-selftests.c: New file.
Note to self: 'o' before 'p'.
gdb/ChangeLog:
2017-04-19 Pedro Alves <palves@redhat.com>
* Makefile.in (SUBDIR_UNITTESTS_SRCS, SUBDIR_UNITTESTS_OBS):
Re-sort in alphabetic order.
-z nodynamic-undefined-weak is only implemented for x86. (The sparc
backend has some support code but doesn't enable the option by
including ld/emulparams/dynamic_undefined_weak.sh, and since the
support looks like it may be broken I haven't enabled it.) This patch
adds the complementary -z dynamic-undefined-weak, extends both options
to affect building of shared libraries as well as executables, and
adds support for the option on powerpc.
include/
* bfdlink.h (struct bfd_link_info <dynamic_undefined_weak>):
Revise comment.
bfd/
* elflink.c (_bfd_elf_adjust_dynamic_symbol): Hide undefweak
or make dynamic for info->dynamic_undefined_weak 0 and 1.
* elf32-ppc.c:Formatting.
(ensure_undefweak_dynamic): Don't make dynamic when
info->dynamic_undefined_weak is zero.
(allocate_dynrelocs): Discard undefweak dyn_relocs for
info->dynamic_undefined_weak. Discard undef dyn_relocs when
not default visibility. Discard undef and undefweak
dyn_relocs earlier.
(ppc_elf_relocate_section): Adjust to suit.
* elf64-ppc.c: Formatting.
(ensure_undefweak_dynamic): Don't make dynamic when
info->dynamic_undefined_weak is zero.
(allocate_dynrelocs): Discard undefweak dyn_relocs for
info->dynamic_undefined_weak. Discard them earlier.
ld/
* ld.texinfo (dynamic-undefined-weak): Document.
(nodynamic-undefined-weak): Document that this option now can
be used with shared libs.
* emulparams/dynamic_undefined_weak.sh: Support -z
dynamic-undefined-weak.
* emulparams/elf32ppccommon.sh: Include dynamic_undefined_weak.sh.
* testsuite/ld-undefined/weak-undef.exp (undef_weak_so),
(undef_weak_exe): New. Use them. Add -z dynamic-undefined-weak
and -z nodynamic-undefined-weak tests.
* Makefile.am: Update powerpc dependencies.
* Makefile.in: Regenerate.
This patch makes the data fields of gdb_xml_parser private, and makes
more functions be gdb_xml_parser methods. This is mostly for better
encapsulation.
Some free functions have their parsing-related guts converted to
methods, while the free functions remain, as they're used as expat
callbacks. Now their only job is to be small shims that restore back
the gdb_xml_parser type, defer work to the corresponding method, and
make sure C++ exceptions don't cross expat.
More C++-fycation of the XML parsers built on top of gdb_xml_parser
could follow, but this was my stopping point.
gdb/ChangeLog:
2017-04-18 Pedro Alves <palves@redhat.com>
* xml-support.c (gdb_xml_parser) <use_dtd, dtd_name, parse,
vdebug, verror, body_text, start_element, end_element, name,
user_data, set_is_xinclude, set_error, expat_parser>: New methods.
<name, user_data, expat_parser, scopes, error, last_line, dtd_name,
is_xinclude>: Make private and add m_ prefix.
(gdb_xml_parser::body_text): New method, based on ...
(gdb_xml_body_text): ... this. Adjust.
(gdb_xml_parser::vdebug): New method, based on ...
(gdb_xml_debug): ... this. Adjust.
(gdb_xml_parser::verror): New method, based on ...
(gdb_xml_error): ... this. Adjust.
(gdb_xml_parser::start_element): New method, based on ...
(gdb_xml_start_element): ... this. Adjust.
(gdb_xml_start_element_wrapper): Defer to
gdb_xml_parser::start_element and gdb_xml_parser::set_error.
(gdb_xml_parser::end_element): New method, based on ...
(gdb_xml_end_element_wrapper): ... this. Adjust.
(gdb_xml_parser::~gdb_xml_parser): Adjust.
(gdb_xml_parser::gdb_xml_parser): Adjust to field renames.
(gdb_xml_parser::use_dtd): New method, based on ...
(gdb_xml_use_dtd): ... this. Adjust.
(gdb_xml_parser::parse): New method, based on ...
(gdb_xml_parse): ... this. Adjust.
(gdb_xml_parse_quick): Adjust to call the parser's parse method.
(xinclude_start_include): Adjust to call the parser's name method.
(xml_xinclude_default, xml_xinclude_start_doctype)
(xml_xinclude_end_doctype): Adjust to call the parser's user_data
method.
(xml_process_xincludes): Adjust to call parser methods.
* xml-support.h (gdb_xml_use_dtd, gdb_xml_parse): Delete
declarations.
This main idea behind this patch is this change to xml-support.c:scope_level
- /* Body text accumulation. This is an owning pointer. */
- struct obstack *body;
+ /* Body text accumulation. */
+ std::string body;
... which allows simplifying other parts of the code.
In target_fetch_description_xml, we want to distinguish between
returning "success + empty std::string" and "no success", and
gdb::optional is a natural fit for that.
gdb/ChangeLog:
2017-04-18 Pedro Alves <palves@redhat.com>
* tracefile-tfile.c (tfile_write_tdesc): Adjust to use
gdb::optional<std::string>.
* xml-support.c: Include <string>.
(scope_level::scope_level(scope_level &&))
(scope_level::~scope_level): Delete.
(scope_level::body): Now a std::string.
(gdb_xml_body_text, gdb_xml_end_element): Adjust.
(xinclude_parsing_data::xinclude_parsing_data): Add 'output'
parameter.
(xinclude_parsing_data::~xinclude_parsing_data): Delete.
(xinclude_parsing_data::output): Now a std::string reference.
(xinclude_start_include): Adjust.
(xml_xinclude_default): Adjust.
(xml_process_xincludes): Add 'output' parameter, and return bool.
* xml-support.h (xml_process_xincludes): Add 'output' parameter,
and return bool.
* xml-tdesc.c: Include <unordered_map> and <string>.
(tdesc_xml_cache): Delete.
(tdesc_xml_cache_s): Delete.
(xml_cache): Now an std::unordered_map.
(tdesc_parse_xml): Adjust to use std::string and unordered_map.
(target_fetch_description_xml): Change return type to
gdb::optional<std::string>, and adjust.
* xml-tdesc.h: Include "common/gdb_optional.h" and <string>.
(target_fetch_description_xml): Change return type to
gdb::optional<std::string>.
I thought I'd add some unit tests to make sure gdb::optional behaved
correctly, and started writing some, but then thought/realized that
libstdc++ already has extensive testing for C++17 std::optional, which
gdb::optional is a subset of, and thought why bother writing something
from scratch. So I tried copying over a subset of libstdc++'s tests
(that ones that cover the subset supported by gdb::optional), and was
positively surprised that they mostly work OOTB. This did help shake
out a few bugs from what I was implementing in the previous patch to
gdb::optional. Still, it's a good chunk of code being copied over, so
if people dislike this copying/duplication, I can drop this patch.
gdb/ChangeLog:
2017-04-18 Pedro Alves <palves@redhat.com>
* Makefile.in (SUBDIR_UNITTESTS_SRCS): Add
unittests/optional-selftests.c.
(SUBDIR_UNITTESTS_OBS): Add optional-selftests.o.
* unittests/optional-selftests.c: New file.
* unittests/optional/assignment/1.cc: New file.
* unittests/optional/assignment/2.cc: New file.
* unittests/optional/assignment/3.cc: New file.
* unittests/optional/assignment/4.cc: New file.
* unittests/optional/assignment/5.cc: New file.
* unittests/optional/assignment/6.cc: New file.
* unittests/optional/assignment/7.cc: New file.
* unittests/optional/cons/copy.cc: New file.
* unittests/optional/cons/default.cc: New file.
* unittests/optional/cons/move.cc: New file.
* unittests/optional/cons/value.cc: New file.
* unittests/optional/in_place.cc: New file.
* unittests/optional/observers/1.cc: New file.
* unittests/optional/observers/2.cc: New file.
Currently we can't use gdb::optional<T> as function return type,
because gdb::optional's copy ctor is deleted. For example, with:
gdb::optional<int> function ()
{
gdb::optional<int> opt;
....
return opt;
we get:
src/gdb/foo.c: In function ‘gdb::optional<int> foo()’:
src/gdb/foo.c:75:10: error: use of deleted function ‘gdb::optional<T>::optional(const gdb::optional<T>&) [with T = int]’
return opt;
^
In file included from src/gdb/foo.c:68:0:
src/gdb/common/gdb_optional.h:53:3: note: declared here
optional (const optional &other) = delete;
^
I started by fixing that, and then ran into another missing feature,
also fixed by this patch.
The next feature I'm missing most from gdb::optional<T> compared to
std::optional<T> is construction/move/assignment from a T, instead of
having to default construct an gdb::optional and then use
optional::emplace(....).
For example:
gdb::optional<std::string> function ()
{
gdb::optional<std::string> opt;
std::string str;
...
opt.emplace (std::move (str));
return opt;
vs
gdb::optional<std::string> function ()
{
std::string str;
...
return str;
The copy/move ctor/assign methods weren't initialy implemented because
std::optional supports construction from a type U if U is convertible
to T too, and has rules to decide whether the ctors are
explicit/implicit based on that, and rules for whether the ctor should
be trivial or not, etc., which leads to a much more complicated
implementation.
If we stick to supporting copy/move construction/assignment of/to an
optional<T> from exactly only optional<T> and T, then all that
conversion-related complication disappears, and we still gain
convenience in most use cases.
The patch also makes emplace return a reference to the constructor
object, per C++17 std::optional, and adds a reset method, againt
because std::optional has one and it's trivial to support it. These
two changes are a requirement of the gdb::optional unit testing patch
that will follow.
gdb/ChangeLog:
2017-04-18 Pedro Alves <palves@redhat.com>
* common/gdb_optional.h: Include common/traits.h.
(in_place_t): New type.
(in_place): New constexpr variable.
(optional::optional): Remove member initialization of
m_instantiated.
(optional::optional(in_place_t...)): New constructor.
(optional::~optional): Use reset.
(optional::optional(const optional&)): New.
(optional::optional(const optional&&)): New.
(optional::optional(T &)): New.
(optional::optional(T &&)): New.
(operator::operator=(const optional &)): New.
(operator::operator=(optional &&)): New.
(operator::operator= (const T &))
(operator::operator= (T &&))
(operator::emplace (Args &&... args)): Return a T&. Use reset.
(operator::reset): New.
(operator::m_instantiated):: Add in-class initializer.
* common/traits.h: Include <type_traits>.
(struct And): New types.
scope_level::scope_level needed both a move ctor and a dtor explicitly
coded, but those will be eliminated in a following patch.
gdb/ChangeLog:
2017-04-18 Pedro Alves <palves@redhat.com>
* xml-support.c: Include <vector>.
(scope_level::scope_level(const gdb_xml_element *))
(scope_level::scope_level(scope_level&&)): New.
(scope_level::~scope_level): New.
(scope_level_s): Delete.
(gdb_xml_parser::scopes): Now a std::vector.
(gdb_xml_body_text, gdb_xml_start_element, gdb_xml_end_element):
Use std::vector.
(gdb_xml_parser::~gdb_xml_parser): Remove now unnecessary
scope cleanup code.
(gdb_xml_parser::gdb_xml_parser): Remove explicit initialization
of the scopes member. Use std::vector::emplace_back.
Basically convert cleanups to destructors in gdb_xml_parser and
xinclude_parsing_data, and then allocate objects of those types on the
stack.
More C++-ification is possible / will follow, but this removes a few
make_cleanup calls already.
gdb/ChangeLog:
2017-04-18 Pedro Alves <palves@redhat.com>
* xml-support.c (gdb_xml_parser): Add ctor/dtor. Make is_xinclude
a bool.
(gdb_xml_end_element): Change type of first parameter.
(gdb_xml_cleanup): Rename to ...
(gdb_xml_parser::~gdb_xml_parser): ... this.
(gdb_xml_create_parser_and_cleanup): Delete with ...
(gdb_xml_parser::gdb_xml_parser): ... creation parts factored out
to this new ctor.
(gdb_xml_parse_quick): Create a local gdb_xml_parser instead of
using gdb_xml_create_parser_and_cleanup.
(xinclude_parsing_data): Add ctor/dtor.
(xml_xinclude_cleanup): Delete.
(xml_process_xincludes): Create a local xinclude_parsing_data
instead of heap-allocating one. Create a local gdb_xml_parser
instead of heap-allocating one with
gdb_xml_create_parser_and_cleanup.
When resuming a native FreeBSD process, ignore exited threads when
suspending/resuming individual threads prior to continuing the process.
gdb/ChangeLog:
PR threads/20743
* fbsd-nat.c (resume_one_thread_cb): Remove.
(resume_all_threads_cb): Remove.
(fbsd_resume): Use ALL_NON_EXITED_THREADS instead of
iterate_over_threads.
commit 902e9fc76a
Author: Maciej W. Rozycki <macro@imgtec.com>
Date: Tue Feb 21 01:46:42 2017 +0000
PR ld/20828: Move symbol version processing ahead of GC symbol sweep
breaks version definition with --version-script --soname. This patch
fixes it by getting soname index before generating the version definition
section.
bfd/
PR ld/21389
* elflink.c (bfd_elf_size_dynamic_sections): Get soname index
before generating the version definition section.
ld/
PR ld/21389
* testsuite/ld-elf/pr21389.map: New file.
* testsuite/ld-elf/pr21389.s: Likewise.
* testsuite/ld-elf/pr21389a.d: Likewise.
* testsuite/ld-elf/pr21389b.d: Likewise.
* testsuite/ld-elf/pr21389c.d: Likewise.
Now that the GDB 8.0 branch has been created, we should bump
the GDB version accordingly.
gdb/ChangeLog:
GDB 8.0 branch created (725bf5cf12):
* version.in: Bump version to 7.99.90.DATE-git.
We already handle the case of an object file first defining a symbol
that a later shared library also defines where the symbol types are
incompatible. This patch handles the reverse, when a later object
file defines an incompatible symbol defined by an earlier shared
library.
bfd/
* elflink.c (_bfd_elf_merge_symbol): Undo dynamic linking
state when a regular object file defines a symbol with
incompatible type to that defined by an earlier shared lib.
ld/
* testsuite/ld-elf/indirect5a.c,
* testsuite/ld-elf/indirect5b.c,
* testsuite/ld-elf/indirect5.map,
* testsuite/ld-elf/indirect5.out: New test.
* testsuite/ld-elf/indirect6a.c: Likewise.
* testsuite/ld-elf/indirect.exp (check_dynamic_syms): New proc.
Run new tests and check dynsyms.
On gdb/windows-nat.c:windows_create_inferior, ALLARGS needs to be
declared independently of the host that we're building for. This
fixes a build breakage on Cygwin.
2017-04-13 Sergio Durigan Junior <sergiodj@redhat.com>
PR gdb/21385
* windows-nat.c (windows_create_inferior): Declare 'allargs'
independently of the host, and fix build breakage on Cygwin.
struct inferior became a non-POD when enum_flags was made a non-POD,
so we should be allocating/destroying inferiors with new/delete, etc.
That's what this commit does.
Note: this commit makes all boolean fields of inferior be "bool",
except the "detaching" field. That'll require more work, so I split
it to a separate patch.
gdb/ChangeLog:
2017-04-13 Pedro Alves <palves@redhat.com>
* inferior.c (free_inferior): Convert to ...
(inferior::~inferior): ... this dtor.
(inferior::inferior): New ctor, factored out from ...
(add_inferior_silent): ... here. Allocate the inferior with a new
expression.
(delete_inferior): Call delete instead of free_inferior.
* inferior.h (gdb_environ, continuation): Forward declare.
(inferior): Now a class. Add in-class initialization to all
members. Make boolean fields bool, except 'detaching'.
(inferior::inferior): New explicit ctor.
(inferior::~inferior): New.
Not used anywhere. This was actually never used. It came in because
I originally created inferior.c by copying thread.c, and doing
s/thread/inferior/g, and missed that nothing needs this. :-)
gdb/ChangeLog:
2017-04-13 Pedro Alves <palves@redhat.com>
* inferior.c (init_inferior_list): Delete.
* inferior.h (init_inferior_list): Delete.
- Make sure we end up with no thread selected after the detach.
- Test both "thread apply all" and "thread apply $some_threads", for
completeness.
gdb/ChangeLog:
2017-04-13 Pedro Alves <palves@redhat.com>
PR threads/13217
* gdb.threads/threadapply.exp (thr_apply_detach): New procedure.
(top level): Call it twice, with different thread sets.
This eliminates a couple cleanups.
gdb/ChangeLog:
2017-04-13 Pedro Alves <palves@redhat.com>
* thread.c: Include <algorithm>.
(thread_array_cleanup): Delete.
(scoped_inc_dec_ref): New class.
(live_threads_count): New function.
(set_thread_refcount): Delete.
(tp_array_compar_ascending): Now a bool.
(tp_array_compar): Convert to a std::sort comparison function.
(thread_apply_all_command): Use std::vector and scoped_inc_dec_ref
and live_threads_count.
A later patch in the series adds an assertion to switch_to_thread that
the resulting inferior_ptid always matches the "current_inferior()"
inferior. This exposed a latent bug in the follow-fork code, where
we're building the fork child inferior. We're switching
inferior_ptid, but not the current inferior object...
gdb/ChangeLog:
2017-04-13 Pedro Alves <palves@redhat.com>
* infrun.c (follow_fork_inferior): Also switch the current
inferior.
While working on some changes to switch_to_thread, I inadvertently
make switch_to_thread call reinit_frame_cache more frequently, even
when the thread didn't change. This exposed a latent bug in
watch_command_1, where we're referencing a frame after
creating/inserting breakpoints, which potentially calls
reinit_frame_cache if it needs to install breakpoints with a different
thread selected.
Handle this similarly to how it's already handled in other similar
cases. I.e., save any frame-related information we might need before
creating a breakpoint.
gdb/ChangeLog:
2017-04-13 Pedro Alves <palves@redhat.com>
* breakpoint.c (watch_command_1): Save watchpoint-frame info
before calling create_internal_breakpoint.
PR binutils/21379
* readelf.c (process_dynamic_section): Detect over large section
offsets in the DT_SYMTAB entry.
PR binutils/21345
* readelf.c (process_mips_specific): Catch an unfeasible memory
allocation before it happens and print a suitable error message.
* objcopy.c: Add --no-merge-notes option to disable note merging.
Add --[no-]merge-notes option to strip, and enable it by default.
(num_bytes): New function.
(merge_gnu_build_notes): Add code to merge stack size notes.
* binutils.texi: Update strip and objcopy documentation.
* readelf.c (print_gnu_build_attribute_name): Use defined
constants for note types.
The previous change to fork-child.c converted the argv building from
an alloca-allocated array of non-owning arg pointers, to a std::vector
of owning pointers, which results in N string dups, with N being the
number of arguments in the vector, and then requires manually
releasing the pointers owned by the vector.
This patch makes the vector hold non-owning pointers, and avoids the
string dups, by doing one single string copy of the arguments upfront,
and replacing separators with NULL terminators in place, like we used
to. All the logic to do that is encapsulated in a new class.
With this, there's no need to remember to manually release the argv
elements with free_vector_argv either.
gdb/ChangeLog:
2017-04-13 Pedro Alves <palves@redhat.com>
* fork-child.c (execv_argv): New class.
(breakup_args): Refactored as ...
(execv_argv::init_for_no_shell): .. this method of execv_argv.
Copy arguments to storage and replace separators with NULL
terminators in place.
(escape_bang_in_quoted_argument): Adjust to return bool.
(execv_argv::execv_argv): New ctor.
(execv_argv::init_for_shell): New method, factored out from
fork_inferior. Don't strdup strings into the vector.
(fork_inferior): Eliminate "shell" local and use execv_argv. Use
Remove free_vector_argv call.
Not a comprehensive change, just some split out from fixes made for
the %A and %B changes.
* coffcode.h: Wrap some overly long _bfd_error_handler args.
* elf.c: Likewise.
* elf32-arm.c: Likewise.
* elf32-i386.c: Likewise.
* elf32-mep.c: Likewise.
* elf64-ia64-vms.c: Likewise.
* elf64-x86-64.c: Likewise.
* elflink.c: Likewise.
* elfnn-ia64.c: Likewise.
* elfxx-mips.c: Likewise.
This steals _doprnt from libiberty, extended to handle %A and %B.
Which lets us do away with the current horrible %A and %B handling
that requires all %A and %B arguments to be passed first, rather than
in the natural order.
* bfd.c (PRINT_TYPE): Define.
(_doprnt): New function.
(error_handler_internal): Use _doprnt.
* coff-arm.c: Put %A and %B arguments to _bfd_error_handler
calls in their natural order, throughout file.
* coff-mcore.c: Likewise.
* coff-ppc.c: Likewise.
* coff-tic80.c: Likewise.
* cofflink.c: Likewise.
* elf-s390-common.c: Likewise.
* elf.c: Likewise.
* elf32-arm.c: Likewise.
* elf32-i386.c: Likewise.
* elf32-m32r.c: Likewise.
* elf32-msp430.c: Likewise.
* elf32-spu.c: Likewise.
* elf64-ia64-vms.c: Likewise.
* elf64-sparc.c: Likewise.
* elf64-x86-64.c: Likewise.
* elflink.c: Likewise.
* elfnn-aarch64.c: Likewise.
* elfnn-ia64.c: Likewise.
* elfxx-mips.c: Likewise.
* elf32-arm.c (arm_type_of_stub): Supply missing args to "long
branch veneers" error. Fix double space and format message.
* elf32-avr.c (avr_add_stub): Do not pass NULL as %B arg.
* elf64-ppc.c (tocsave_find): Supply missing %B arg.
