binutils-gdb modified for the FreeChainXenon project
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Alan Hayward 01abb042af Testsuite: Catch gdbserver socket listen errors
When launching gdbserver, the testsuite checks for binding failure but
does not check for failure to listen to socket error (which can happen
due to another gdbserver binding to the socket at the same time).

When this error occurs, the test will ignore the error and connect GDB
to the failed port.  This may succeed and GDB will now be connected to
the gdbserver from another test.  This eventually causes both tests to
fail.

When running the tests suite with native-gdbserver across many cores,
this issue may happen once or twice, each causing random failures for
two .exp testscripts.

Example gdb.log output for the failure:

The testsuite sucessfully notices a failure to connect to port 2348.
It launches again with port 2349, which also fails.  The testsuite
ignores this error and uses gdb to connect to the port - which succeeds.

spawn /work/build/gdb/testsuite/../gdbserver/gdbserver --once localhost:2348 /work/build/gdb/testsuite/outputs/gdb.ada/arrayidx/p^M
Can't bind address: Address already in use.^M
Exiting^M
Port 2348 is already in use.
spawn /work/build/gdb/testsuite/../gdbserver/gdbserver --once localhost:2349 /work/build/gdb/testsuite/outputs/gdb.ada/arrayidx/p^M
Can't listen on socket: Address already in use.^M
Exiting^M
target remote localhost:2349^M
Remote debugging using localhost:2349^M
Reading /lib/ld-linux-aarch64.so.1 from remote target...^M
warning: File transfers from remote targets can be slow. Use "set sysroot" to access files locally instead.^M
Reading /lib/ld-linux-aarch64.so.1 from remote target...^M
Reading symbols from target:/lib/ld-linux-aarch64.so.1...^M
Reading /lib/ld-2.23.so from remote target...^M
Reading /lib/.debug/ld-2.23.so from remote target...^M
Reading /work/build/install/lib/debug//lib/ld-2.23.so from remote target...^M
Reading /work/build/install/lib/debug/lib//ld-2.23.so from remote target...^M
Reading target:/work/build/install/lib/debug/lib//ld-2.23.so from remote target...^M
(No debugging symbols found in target:/lib/ld-linux-aarch64.so.1)^M
0x0000ffffbf6d2cc0 in ?? () from target:/lib/ld-linux-aarch64.so.1^M
(gdb) continue^M
Continuing.^M
Reading /lib/aarch64-linux-gnu/libc.so.6 from remote target...^M
Reading /lib/aarch64-linux-gnu/libc-2.23.so from remote target...^M
Reading /lib/aarch64-linux-gnu/.debug/libc-2.23.so from remote target...^M
Reading /work/build/install/lib/debug//lib/aarch64-linux-gnu/libc-2.23.so from remote target...^M
Reading /work/build/install/lib/debug/lib/aarch64-linux-gnu//libc-2.23.so from remote target...^M
Reading target:/work/build/install/lib/debug/lib/aarch64-linux-gnu//libc-2.23.so from remote target...^M
[Inferior 1 (process 35351) exited normally]^M
(gdb) FAIL: gdb.ada/arrayidx.exp: can't run to main

Meanwhile, at the same time, in another test, gdbserver successfully
connects to port 2349.  GDB then tries to connect to the port, but it
times out because the GDB in the test above has already connected to it.

spawn /work/build/gdb/testsuite/../gdbserver/gdbserver --once localhost:2348 /work/build/gdb/testsuite/outputs/gdb.ada/rdv_wait/foo^M
Can't bind address: Address already in use.^M
Exiting^M
Port 2348 is already in use.
spawn /work/build/gdb/testsuite/../gdbserver/gdbserver --once localhost:2349 /work/build/gdb/testsuite/outputs/gdb.ada/rdv_wait/foo^M
Process /work/build/gdb/testsuite/outputs/gdb.ada/rdv_wait/foo created; pid = 65162^M
Listening on port 2349^M
Remote debugging from host 127.0.0.1, port 45154^M
target remote localhost:2349^M
localhost:2349: Connection timed out.^M
(gdb) ^CQuit^M
(gdb) task 2^M
Cannot inspect Ada tasks when program is not running^M

gdb/testsuite/ChangeLog:

	* lib/gdbserver-support.exp (gdbserver_start): Check for listen
	failure.
2019-02-28 17:20:53 +00:00
bfd Prevent a buffer overrun error when attempting to parse a corrupt ELF file. 2019-02-28 14:30:20 +00:00
binutils Testsuite: Allow multiple lines of "as" in testsuite. 2019-02-27 13:16:14 +00:00
config Add markers for 2.32 branch to NEWS and ChangeLog files. 2019-01-19 15:55:50 +00:00
contrib Update dg-extract-results.* from gcc 2018-08-06 16:05:16 +02:00
cpu Add markers for 2.32 branch to NEWS and ChangeLog files. 2019-01-19 15:55:50 +00:00
elfcpp Add markers for 2.32 branch to NEWS and ChangeLog files. 2019-01-19 15:55:50 +00:00
etc Update year range in copyright notice of binutils files 2019-01-01 22:06:53 +10:30
gas Testsuite: Allow multiple lines of "as" in testsuite. 2019-02-27 13:16:14 +00:00
gdb Testsuite: Catch gdbserver socket listen errors 2019-02-28 17:20:53 +00:00
gold Check whether symbols with MOVW_.ABS relocations require PLT entries (aarch64). 2019-02-19 16:13:24 -08:00
gprof Updated translations for various binutils subdirectories. 2019-01-21 12:59:20 +00:00
include AArch64: Add pauth core file section 2019-02-20 10:39:28 +00:00
intl Change version to 2.32.51 and regenerate configure and pot files. 2019-01-19 16:51:42 +00:00
ld x86-64: Skip protected check on symbol defined by linker 2019-02-27 11:53:27 -08:00
libdecnumber Merge config/ changes from GCC. 2018-10-31 17:16:41 +00:00
libiberty Fix splay tree KEY leak detected in GDB test gdb.base/macscp.exp 2019-02-12 06:06:19 -07:00
opcodes Add missing ChangeLog files for previous patch. 2019-02-08 13:21:52 -08:00
readline Readline: Cleanup some warnings 2019-01-31 17:25:06 +00:00
sim (gdb/sim) Move Mike Frysinger to past maintainers section 2019-02-28 11:20:29 +04:00
texinfo
zlib Merge config/ changes from GCC. 2018-10-31 17:16:41 +00:00
.cvsignore
.gitattributes Add a .gitattributes file for use with git-merge-changelog 2014-07-25 18:07:23 -04:00
.gitignore Add archives and make stamps to the .gitignore file. 2016-09-27 15:10:42 +01:00
ar-lib Bump to autoconf 2.69 and automake 1.15.1 2018-06-19 16:55:06 -04:00
ChangeLog Add markers for 2.32 branch to NEWS and ChangeLog files. 2019-01-19 15:55:50 +00:00
compile Update from upstream Automake 2014-11-16 13:43:48 +01:00
config-ml.in Update top level configure files by synchronizing them with gcc. 2018-01-10 15:29:21 +00:00
config.guess Sync config.guess, config.sub from GCC 2019-01-14 15:47:35 +01:00
config.rpath
config.sub Sync config.guess, config.sub from GCC 2019-01-14 15:47:35 +01:00
configure Don't build readline/libreadline.a, when --with-system-readline is supplied 2019-01-03 00:03:34 -05:00
configure.ac Don't build readline/libreadline.a, when --with-system-readline is supplied 2019-01-03 00:03:34 -05:00
COPYING
COPYING.LIB
COPYING.LIBGLOSS Update the address of the FSF in the copyright notice of files which were using the old address. 2017-12-14 12:48:55 +00:00
COPYING.NEWLIB 2013-10-01 Jeff Johnston <jjohnstn@redhat.com> 2013-10-01 18:14:04 +00:00
COPYING3
COPYING3.LIB
depcomp Update from upstream Automake 2014-11-16 13:43:48 +01:00
djunpack.bat
install-sh Update from upstream Automake 2014-11-16 13:43:48 +01:00
libtool.m4 Bump to autoconf 2.69 and automake 1.15.1 2018-06-19 16:55:06 -04:00
ltgcc.m4
ltmain.sh PR target/59788 2014-02-06 11:01:57 +01:00
ltoptions.m4
ltsugar.m4
ltversion.m4
lt~obsolete.m4
MAINTAINERS Update description of ownership of files in include/ 2014-11-04 16:14:14 -08:00
Makefile.def This was already applied on the GCC side. 2018-06-19 00:05:40 +02:00
Makefile.in Introduce @unless/@endunless and postbootstrap Makefile targets 2018-06-29 23:49:28 -03:00
Makefile.tpl Introduce @unless/@endunless and postbootstrap Makefile targets 2018-06-29 23:49:28 -03:00
makefile.vms
missing Update from upstream Automake 2014-11-16 13:43:48 +01:00
mkdep
mkinstalldirs Update from upstream Automake 2014-11-16 13:43:48 +01:00
move-if-change Update `move-if-change' from gnulib 2014-11-16 17:04:02 +01:00
multilib.am Merge autoconf / automake update changes from GCC. 2018-10-31 17:10:56 +00:00
README
README-maintainer-mode Bump to autoconf 2.69 and automake 1.15.1 2018-06-19 16:55:06 -04:00
setup.com
src-release.sh Move potentially obsolete BFD targets into the definitely obsolete section. Add a note to the README-how-to-make-a-release document about doing this. 2019-02-07 14:30:02 +00:00
symlink-tree
test-driver Bump to autoconf 2.69 and automake 1.15.1 2018-06-19 16:55:06 -04:00
ylwrap Update from upstream Automake 2014-11-16 13:43:48 +01:00

		   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.