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Simon Marchi 6f5d514f91 gdb: replace inferior::waiting_for_vfork_done with inferior::thread_waiting_for_vfork_done
The inferior::waiting_for_vfork_done flag indicates that some thread in
that inferior is waiting for a vfork-done event.  Subsequent patches
will need to know which thread precisely is waiting for that event.

Replace the boolean flag (waiting_for_vfork_done) with a thread_info
pointer (thread_waiting_for_vfork_done).

I think there is a latent buglet in that waiting_for_vfork_done is
currently not reset on inferior exec or exit.  I could imagine that if a
thread in the parent process calls exec or exit while another thread of
the parent process is waiting for its vfork child to exec or exit, we
could end up with inferior::waiting_for_vfork_done without a thread
actually waiting for a vfork-done event anymore.  And since that flag is
checked in resume_1, things could misbehave there.

Since the new field points to a thread_info object, and those are
destroyed on exec or exit, it could be worse now since we could try to
access freed memory, if thread_waiting_for_vfork_done were to point to a
stale thread_info.  To avoid this, clear the field in
infrun_inferior_exit and infrun_inferior_execd.

Change-Id: I31b847278613a49ba03fc4915f74d9ceb228fdce
2022-04-04 22:11:47 -04:00
bfd Automatic date update in version.in 2022-04-05 00:00:06 +00:00
binutils objdump/opcodes: add syntax highlighting to disassembler output 2022-04-04 13:10:52 +01:00
config Add markers for 2.38 branch 2022-01-22 12:08:55 +00:00
contrib Import mklog.py from gcc repo 2020-09-25 10:24:44 -04:00
cpu Add markers for 2.38 branch 2022-01-22 12:08:55 +00:00
elfcpp Add markers for 2.38 branch 2022-01-22 12:08:55 +00:00
etc Update year range in copyright notice of binutils files 2022-01-02 12:04:28 +10:30
gas gas: copy st_size only if unset 2022-04-04 08:43:50 -07:00
gdb gdb: replace inferior::waiting_for_vfork_done with inferior::thread_waiting_for_vfork_done 2022-04-04 22:11:47 -04:00
gdbserver Remove some globals from nat/windows-nat.c 2022-04-04 13:58:37 -06:00
gdbsupport Consolidate definition of current_directory 2022-03-30 09:08:48 -06:00
gnulib Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
gold Updated Serbian translations for the bfd, gold, ld and opcodes directories 2022-02-17 15:18:59 +00:00
gprof libtool.m4: fix the NM="/nm/over/here -B/option/with/path" case 2022-03-25 12:02:35 +00:00
gprofng libtool.m4: fix the NM="/nm/over/here -B/option/with/path" case 2022-03-25 12:02:35 +00:00
include objdump/opcodes: add syntax highlighting to disassembler output 2022-04-04 13:10:52 +01:00
intl Regenerate a couple of files 2021-11-15 12:20:12 +10:30
ld libtool.m4: fix the NM="/nm/over/here -B/option/with/path" case 2022-03-25 12:02:35 +00:00
libbacktrace libtool.m4: fix the NM="/nm/over/here -B/option/with/path" case 2022-03-25 12:02:35 +00:00
libctf libtool.m4: fix the NM="/nm/over/here -B/option/with/path" case 2022-03-25 12:02:35 +00:00
libdecnumber Run autoreconf -vf throughout 2020-07-29 16:03:55 -04:00
libiberty gdb: rename floatformats_ia64_quad to floatformats_ieee_quad 2022-04-02 08:36:33 +08:00
opcodes opcodes/i386: partially implement disassembler style support 2022-04-04 13:10:52 +01:00
readline Update config.sub and config.guess for MIPS R3 and R5 ISA support 2021-05-24 18:11:49 +02:00
sim sim: fixes for libopcodes styled disassembler 2022-04-04 22:41:24 +01:00
texinfo
zlib libtool.m4: fix the NM="/nm/over/here -B/option/with/path" case 2022-03-25 12:02:35 +00:00
.cvsignore
.editorconfig Add top-level .editorconfig file 2022-01-28 08:25:42 -05:00
.gitattributes
.gitignore Add gnu global outputs to .gitignore 2020-12-02 10:00:27 -05:00
ar-lib
ChangeLog gprofng: avoid using `fallthrough' attributes 2022-03-15 21:04:57 +01:00
compile
config-ml.in
config.guess Update the config.guess and config.sub files from the master repository and regenerate files. 2022-01-17 16:21:22 +00:00
config.rpath
config.sub Update the config.guess and config.sub files from the master repository and regenerate files. 2022-01-17 16:21:22 +00:00
configure gprofng: a new GNU profiler 2022-03-11 08:58:31 +00:00
configure.ac gprofng: a new GNU profiler 2022-03-11 08:58:31 +00:00
COPYING
COPYING3
COPYING3.LIB
COPYING.LIB
COPYING.LIBGLOSS
COPYING.NEWLIB
depcomp
djunpack.bat
install-sh
libtool.m4 libtool.m4: fix the NM="/nm/over/here -B/option/with/path" case 2022-03-25 12:02:35 +00:00
lt~obsolete.m4
ltgcc.m4
ltmain.sh
ltoptions.m4
ltsugar.m4
ltversion.m4
MAINTAINERS MAINTAINERS: Update path to readline config.{sub,guess} files 2021-05-24 18:11:49 +02:00
Makefile.def gprofng: a new GNU profiler 2022-03-11 08:58:31 +00:00
Makefile.in gprofng: a new GNU profiler 2022-03-11 08:58:31 +00:00
Makefile.tpl Sync Makefile.tpl with GCC 2021-11-13 09:04:03 -08:00
makefile.vms
missing
mkdep
mkinstalldirs
move-if-change
multilib.am
README
README-maintainer-mode
setup.com
src-release.sh gprofng: a new GNU profiler 2022-03-11 08:58:31 +00:00
symlink-tree
test-driver
ylwrap

		   README for GNU development tools

This directory contains various GNU compilers, assemblers, linkers, 
debuggers, etc., plus their support routines, definitions, and documentation.

If you are receiving this as part of a GDB release, see the file gdb/README.
If with a binutils release, see binutils/README;  if with a libg++ release,
see libg++/README, etc.  That'll give you info about this
package -- supported targets, how to use it, how to report bugs, etc.

It is now possible to automatically configure and build a variety of
tools with one command.  To build all of the tools contained herein,
run the ``configure'' script here, e.g.:

	./configure 
	make

To install them (by default in /usr/local/bin, /usr/local/lib, etc),
then do:
	make install

(If the configure script can't determine your type of computer, give it
the name as an argument, for instance ``./configure sun4''.  You can
use the script ``config.sub'' to test whether a name is recognized; if
it is, config.sub translates it to a triplet specifying CPU, vendor,
and OS.)

If you have more than one compiler on your system, it is often best to
explicitly set CC in the environment before running configure, and to
also set CC when running make.  For example (assuming sh/bash/ksh):

	CC=gcc ./configure
	make

A similar example using csh:

	setenv CC gcc
	./configure
	make

Much of the code and documentation enclosed is copyright by
the Free Software Foundation, Inc.  See the file COPYING or
COPYING.LIB in the various directories, for a description of the
GNU General Public License terms under which you can copy the files.

REPORTING BUGS: Again, see gdb/README, binutils/README, etc., for info
on where and how to report problems.