Replace "the the" by "the".
gdb/ChangeLog:
2020-03-06 Tom de Vries <tdevries@suse.de>
* NEWS: Fix "the the".
* ctfread.c: Same.
gdb/doc/ChangeLog:
2020-03-06 Tom de Vries <tdevries@suse.de>
* gdb.texinfo: Fix "the the".
gdb/testsuite/ChangeLog:
2020-03-06 Tom de Vries <tdevries@suse.de>
* README: Fix "the the".
* gdb.base/dprintf.exp: Same.
Add note to 'Race detection' entry in README about the possibility that
check-read1 makes failing tests pass.
gdb/testsuite/ChangeLog:
2020-02-04 Tom de Vries <tdevries@suse.de>
* README (Race detection): Add note.
Change-Id: I12ef2f0ec35abc5a0221585bf30e5f4f0616aa7c
Add missing documentation for the debugredirect setting.
Add description and uses of gdb.in/gdb.cmd to the testsuite README.
Mention this in the NEWS file.
gdb/ChangeLog:
* NEWS: Add debugredirect and testsuite sections.
gdb/doc/ChangeLog:
* gdb.texinfo (Shell Commands): Add debugredirect.
gdb/testsuite/ChangeLog:
* README (Re-running Tests Outside The Testsuite): New section.
TRANSCRIPT is superseeded by the .in, .cmd and .debug files, and
can be removed.
gdb/testsuite/ChangeLog
* README (Running the Testsuite): Change example.
(Testsuite Parameters): Remove TRANSCRIPT.
* lib/gdb.exp: Remove TRANSCRIPT check.
Add "replay" to the list of GDBSERVER_DEBUG options. This will
cause a gdbserver.replay file to be written to the test output
directory.
At the same time switch this to a comma separated list in order
to easily handle all possible options.
The replay log is created by GDB, but has been added to
GDBSERVER_DEBUG as it is only required for gdbserver tests. To
enable it, the gdb_debug_init is overridden to allow the additional
checking, before calling the original function.
gdb/testsuite/ChangeLog:
* README (Testsuite Parameters): Add replay logging to
GDBSERVER_DEBUG.
(gdbserver,debug): Refer to GDBSERVER_DEBUG.
* lib/gdbserver-support.exp (gdbserver_start): Treat gdbserverdebug
as a comma separated list.
(gdb_debug_init): Override procedure.
Add both board option and environment variable which enables gdb
debug via a comma separated list and sends it to the file gdb.debug,
located in the output directory for the current test. Document this.
Add support for the environment variable in the Makefile.
The testsuite can be run with gdb debug enabled in the following way:
make check GDB_DEBUG="infrun,target,remote"
A Test with multiple invocations of GDB will all append debug to the
same log file.
gdb/testsuite/ChangeLog:
* Makefile.in: Pass through GDB_DEBUG.
* README (Testsuite Parameters): Add GDB_DEBUG.
(gdb,debug): Add board setting.
* lib/gdb.exp (default_gdb_start): Start debugging.
(gdb_debug_enabled): New procedure.
(gdb_debug_init): Likewise.
Add both board option and environment variable which enables gdbserver
debug and sends it to the file gdbserver.debug, located in the output
directory for the current test. Document this.
Add support for the environment variable in the Makefile.
The testsuite can be run with gdbserver debug enabled in the following way:
make check GDBSERVER_DEBUG=all
Disable tspeed.exp when debugging to prevent the log file filling
many gigabytes then timing out.
gdb/testsuite/ChangeLog:
* Makefile.in: Pass through GDBSERVER_DEBUG.
* README (Testsuite Parameters): Add GDBSERVER_DEBUG.
(gdbserver,debug): Add board setting.
* gdb.trace/tspeed.exp: Skip when debugging.
* lib/gdb.exp (gdbserver_debug_enabled): New procedure.
* lib/gdbserver-support.exp: Likewise
Recent versions of Ubuntu and Debian default GCC to enable pie.
In dump.exp, pie will causes addresses to be out of range for IHEX.
In break-interp.exp, pie is explicitly set for some tests and assumed
to be disabled for the remainder.
Ensure pie is disabled for these tests when required.
In addition, add a pie option to gdb_compile to match the nopie option
and simplify use.
gdb/testsuite/ChangeLog:
* README: Add pie options.
* gdb.base/break-interp.exp: Ensure pie is disabled.
* gdb.base/dump.exp: Likewise.
* lib/gdb.exp (gdb_compile): Add pie option.
Various tests use test code written in i386 / x86_64 assembly that cannot
be used to create PIE executables. Therefore compilation of test programs
failed on systems where the compiler default is to create PIE executable.
The solution is to use -no-pie linker flag, however, such flag may not
(is not) supported by all compilers GDB needs to support (e.g. gcc 4.8).
To handle this, introduce a new flag to gdb_compile - nopie - which
inserts -no-pie linker flag where supported and is no-op where it is
not. By default, -no-pie flag is inserted since most modern compiler do
support it.
It is unfortunately not uncommon to have tests hanging on some of the
BuildBot workers. For example, the ppc64be/ppc64le+gdbserver builders
are especially in a bad state when it comes to testing GDB/gdbserver,
and we can have builds that take an absurd amount of time to
finish (almost 1 week for one single build, for example).
It may be hard to diagnose these failures, because sometimes we don't
have access to the faulty systems, and other times we're just too busy
to wait and check which test is actually hanging. During one of our
conversations about the topic, someone proposed that it would be a
good idea to have a timestamp put together with stdout output, so that
we can come back later and examine which tests are taking too long to
complete.
Here's my proposal to do this. The very first thing I tried to do was
to use "ts(1)" to achieve this feature, and it obviously worked, but
the problem is that I'm afraid "ts(1)" may not be widely available on
every system we support. Therefore, I decided to implement a *very*
simple version of "ts(1)", in Python 3, which basically does the same
thing: iterate over the stdin lines, and prepend a timestamp onto
them.
As for testsuite/Makefile.in, the user can now specify two new
variables to enable timestamp'ed output: TS (which enables the
output), and TS_FORMAT (optional, used to specify another timestamp
format according to "strftime").
Here's an example of how the output looks like:
...
[Nov 22 17:07:19] [1234] Running binutils-gdb/gdb/testsuite/gdb.base/call-strs.exp ...
[Nov 22 17:07:19] [1234] Running binutils-gdb/gdb/testsuite/gdb.base/step-over-no-symbols.exp ...
[Nov 22 17:07:20] [1234] Running binutils-gdb/gdb/testsuite/gdb.base/all-architectures-6.exp ...
[Nov 22 17:07:20] [1234] Running binutils-gdb/gdb/testsuite/gdb.base/hashline3.exp ...
[Nov 22 17:07:20] [1234] Running binutils-gdb/gdb/testsuite/gdb.base/max-value-size.exp ...
[Nov 22 17:07:20] [1234] Running binutils-gdb/gdb/testsuite/gdb.base/quit-live.exp ...
[Nov 22 17:07:46] [1234] Running binutils-gdb/gdb/testsuite/gdb.base/paginate-bg-execution.exp ...
[Nov 22 17:07:56] [1234] Running binutils-gdb/gdb/testsuite/gdb.base/gcore-buffer-overflow.exp ...
[Nov 22 17:07:56] [1234] Running binutils-gdb/gdb/testsuite/gdb.base/gcore-relro.exp ...
[Nov 22 17:07:56] [1234] Running binutils-gdb/gdb/testsuite/gdb.base/watchpoint-delete.exp ...
[Nov 22 17:07:56] [1234] Running binutils-gdb/gdb/testsuite/gdb.base/breakpoint-in-ro-region.exp ...
[Nov 22 17:07:56] [1234] Running binutils-gdb/gdb/testsuite/gdb.base/vla-sideeffect.exp ...
[Nov 22 17:07:57] [1234] Running binutils-gdb/gdb/testsuite/gdb.base/unload.exp ...
...
(What, gdb.base/quit-live.exp is taking 26 seconds to complete?!)
Output to stderr is not timestamp'ed, but I don't think that will be a
problem for us. If it is, we can revisit the solution and extend it.
gdb/testsuite/ChangeLog:
2018-11-25 Sergio Durigan Junior <sergiodj@redhat.com>
* Makefile.in (TIMESTAMP): New variable.
(check-single): Add $(TIMESTAMP) to the end of $(DO_RUNTEST)
command.
(check-single-racy): Likewise.
(check/%.exp): Likewise.
(check-racy/%.exp): Likewise.
(workers/%.worker): Likewise.
(build-perf): Likewise.
(check-perf): Likewise.
* README: Describe new "TS" and "TS_FORMAT" variables.
* print-ts.py: New file.
This patch implements IPv6 support for both GDB and gdbserver. Based
on my research, it is the fourth attempt to do that since 2006. Since
I used ideas from all of the previous patches, I also added their
authors's names on the ChangeLogs as a way to recognize their
efforts. For reference sake, you can find the previous attempts at:
https://sourceware.org/ml/gdb-patches/2006-09/msg00192.htmlhttps://sourceware.org/ml/gdb-patches/2014-02/msg00248.htmlhttps://sourceware.org/ml/gdb-patches/2016-02/msg00226.html
The basic idea behind the patch is to start using the new
'getaddrinfo'/'getnameinfo' calls, which are responsible for
translating names and addresses in a protocol-independent way. This
means that if we ever have a new version of the IP protocol, we won't
need to change the code again (or, at least, won't have to change the
majority of the code).
The function 'getaddrinfo' returns a linked list of possible addresses
to connect to. Dealing with multiple addresses proved to be a hard
task with the current TCP auto-retry mechanism implemented on
ser-tcp:net_open. For example, when gdbserver listened only on an
IPv4 socket:
$ ./gdbserver --once 127.0.0.1:1234 ./a.out
and GDB was instructed to try to connect to both IPv6 and IPv4
sockets:
$ ./gdb -ex 'target extended-remote localhost:1234' ./a.out
the user would notice a somewhat big delay before GDB was able to
connect to the IPv4 socket. This happened because GDB was trying to
connect to the IPv6 socket first, and had to wait until the connection
timed out before it tried to connect to the IPv4 socket.
For that reason, I had to rewrite the main loop and implement a new
method for handling multiple connections. After some discussion,
Pedro and I agreed on the following algorithm:
1) For each entry returned by 'getaddrinfo', we try to open a socket
and connect to it.
2.a) If we have a successful 'connect', we just use that connection.
2.b) If we don't have a successfull 'connect', but if we've got a
ECONNREFUSED (meaning the the connection was refused), we keep track
of this fact by using a flag.
2.c) If we don't have a successfull 'connect', but if we've got a
EINPROGRESS (meaning that the connection is in progress), we perform
a 'select' call on the socket until we have a result (either a
successful connection, or an error on the socket).
3) If tcp_auto_retry is true, and we haven't gotten a successful
connection, and at least one of our attempts failed with
ECONNREFUSED, then we wait a little bit (i.e., call
'wait_for_connect'), check to see if there was a
timeout/interruption (in which case we bail out), and then go back
to (1).
After multiple tests, I was able to connect without delay on the
scenario described above, and was also able to connect in all other
types of scenarios.
I also implemented some hostname parsing functions (along with their
corresponding unit tests) which are used to help GDB and gdbserver to
parse hostname strings provided by the user. These new functions are
living inside common/netstuff.[ch]. I've had to do that since IPv6
introduces a new URL scheme, which defines that square brackets can be
used to enclose the host part and differentiate it from the
port (e.g., "[::1]:1234" means "host ::1, port 1234"). I spent some
time thinking about a reasonable way to interpret what the user wants,
and I came up with the following:
- If the user has provided a prefix that doesn't specify the protocol
version (i.e., "tcp:" or "udp:"), or if the user has not provided
any prefix, don't make any assumptions (i.e., assume AF_UNSPEC when
dealing with 'getaddrinfo') *unless* the host starts with "[" (in
which case, assume it's an IPv6 host).
- If the user has provided a prefix that does specify the protocol
version (i.e., "tcp4:", "tcp6:", "udp4:" or "udp6:"), then respect
that.
This method doesn't follow strictly what RFC 2732 proposes (that
literal IPv6 addresses should be provided enclosed in "[" and "]")
because IPv6 addresses still can be provided without square brackets
in our case, but since we have prefixes to specify protocol versions I
think this is not an issue.
Another thing worth mentioning is the new 'GDB_TEST_SOCKETHOST'
testcase parameter, which makes it possible to specify the
hostname (without the port) to be used when testing GDB and
gdbserver. For example, to run IPv6 tests:
$ make check-gdb RUNTESTFLAGS='GDB_TEST_SOCKETHOST=tcp6:[::1]'
Or, to run IPv4 tests:
$ make check-gdb RUNTESTFLAGS='GDB_TEST_SOCKETHOST=tcp4:127.0.0.1'
This required a few changes on the gdbserver-base.exp, and also a
minimal adjustment on gdb.server/run-without-local-binary.exp.
Finally, I've implemented a new testcase,
gdb.server/server-connect.exp, which is supposed to run on the native
host and perform various "smoke tests" using different connection
methods.
This patch has been regression-tested on BuildBot and locally, and
also built using a x86_64-w64-mingw32 GCC, and no problems were found.
gdb/ChangeLog:
2018-07-11 Sergio Durigan Junior <sergiodj@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Paul Fertser <fercerpav@gmail.com>
Tsutomu Seki <sekiriki@gmail.com>
Pedro Alves <palves@redhat.com>
* Makefile.in (SUBDIR_UNITTESTS_SRCS): Add
'unittests/parse-connection-spec-selftests.c'.
(COMMON_SFILES): Add 'common/netstuff.c'.
(HFILES_NO_SRCDIR): Add 'common/netstuff.h'.
* NEWS (Changes since GDB 8.2): Mention IPv6 support.
* common/netstuff.c: New file.
* common/netstuff.h: New file.
* ser-tcp.c: Include 'netstuff.h' and 'wspiapi.h'.
(wait_for_connect): Update comment. New parameter
'gdb::optional<int> sock' instead of 'struct serial *scb'.
Use 'sock' directly instead of 'scb->fd'.
(try_connect): New function, with code from 'net_open'.
(net_open): Rewrite main loop to deal with multiple
sockets/addresses. Handle IPv6-style hostnames; implement
support for IPv6 connections.
* unittests/parse-connection-spec-selftests.c: New file.
gdb/gdbserver/ChangeLog:
2018-07-11 Sergio Durigan Junior <sergiodj@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Paul Fertser <fercerpav@gmail.com>
Tsutomu Seki <sekiriki@gmail.com>
* Makefile.in (SFILES): Add '$(srcdir)/common/netstuff.c'.
(OBS): Add 'common/netstuff.o'.
(GDBREPLAY_OBS): Likewise.
* gdbreplay.c: Include 'wspiapi.h' and 'netstuff.h'.
(remote_open): Implement support for IPv6
connections.
* remote-utils.c: Include 'netstuff.h', 'filestuff.h'
and 'wspiapi.h'.
(handle_accept_event): Accept connections from IPv6 sources.
(remote_prepare): Handle IPv6-style hostnames; implement
support for IPv6 connections.
(remote_open): Implement support for printing connections from
IPv6 sources.
gdb/testsuite/ChangeLog:
2018-07-11 Sergio Durigan Junior <sergiodj@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Paul Fertser <fercerpav@gmail.com>
Tsutomu Seki <sekiriki@gmail.com>
* README (Testsuite Parameters): Mention new 'GDB_TEST_SOCKETHOST'
parameter.
* boards/native-extended-gdbserver.exp: Do not set 'sockethost'
by default.
* boards/native-gdbserver.exp: Likewise.
* gdb.server/run-without-local-binary.exp: Improve regexp used
for detecting when a remote debugging connection succeeds.
* gdb.server/server-connect.exp: New file.
* lib/gdbserver-support.exp (gdbserver_default_get_comm_port):
Do not prefix the port number with ":".
(gdbserver_start): New global GDB_TEST_SOCKETHOST. Implement
support for detecting and using it. Add '$debughost_gdbserver'
to the list of arguments used to start gdbserver. Handle case
when gdbserver cannot resolve a network name.
gdb/doc/ChangeLog:
2018-07-11 Sergio Durigan Junior <sergiodj@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Paul Fertser <fercerpav@gmail.com>
Tsutomu Seki <sekiriki@gmail.com>
* gdb.texinfo (Remote Connection Commands): Add explanation
about new IPv6 support. Add new connection prefixes.
This commit finally clears the "isremote" flag in the native-gdbserver
and native-stdio-gdbserver boards. The goal is to make all "native"
boards be considered not remote in DejaGnu terms, like the
native-extended-gdbserver board is too.
DejaGnu automatically considers boards remote if their names don't
match the local hostname. That means that native-gdbserver and
native-extended-gdbserver are considered remote by default by DejaGnu,
even though they run locally. native-extended-gdbserver, however,
overrides its isremote flag to force it to be not remote. So we are
in that weird state where native-gdbserver is considered remote, and
native-extended-gdbserver is considered not remote.
A recent set of commits fixed all the problems (and some more) exposed
by testing with --target_board=native-gdbserver and
--target_board=native-stdio-gdbserver with isremote forced off on
x86-64 GNU/Linux. I believe we're good to go now.
The native-stdio-gdbserver.exp/remote-stdio-gdbserver.exp boards
required deep non-obvious modifications unfortunately... The problem
is that if a board is not remote, then DejaGnu doesn't call
${board}_spawn / ${board}_exec at all, and the
native-stdio-gdbserver.exp board relies on those procedures being
called. To fix that, this commit redesigns how the stdio boards hook
into the testing framework to spawn gdbserver. IMO, this is a good
change anyway, because the way its done currently is a bit of a hack,
and the result turns out to be simpler, even. With this commit, they
now no longer load the "gdbserver" generic config, and hook at the
mi_gdb_target_load/gdb_reload level instead, making them more like
traditional board files.
To share code between native-stdio-gdbserver.exp and
remote-stdio-gdbserver.exp, a new shared stdio-gdbserver-base.exp file
is created.
Instead of having each native board clear isremote manually, boards
source the new "local-board.exp" file.
This also adds a new section to testsuite/README file discussing
local/remote/native, so that we can easily refer to it.
gdb/testsuite/ChangeLog:
2017-10-16 Pedro Alves <palves@redhat.com>
Simon Marchi <simon.marchi@polymtl.ca>
* README (Local vs Remote vs Native): New section.
* boards/local-board.exp: New file, with bits factored out from
...
* boards/native-extended-gdbserver.exp: ... here. Load
"local-board".
* boards/native-gdbserver.exp: Load "local-board".
(${board}_spawn, ${board}_exec): Delete.
* boards/native-stdio-gdbserver.exp: Most contents factored out to
...
* boards/stdio-gdbserver-base.exp: ... this new file.
* boards/native-stdio-gdbserver.exp: Reimplement, by loading
"stdio-gdbserver-base" and defining a get_target_remote_pipe_cmd
procedure.
* boards/remote-stdio-gdbserver.exp: Load stdio-gdbserver-base
instead of native-stdio-gdbserver. Don't set gdb_server_prog nor
stdio_gdbserver_command.
(${board}_get_remote_address, ${board}_get_comm_port)
(${board}_download, ${board}_upload): Delete.
(get_target_remote_pipe_cmd): New.
With this, a specific test may can start GDB with MI on a separate UI
by using:
mi_gdb_start separate-mi-tty
In addition, it's also possible to run the whole testsuite with MI on
a separate tty, with:
make check RUNTESTFLAGS="FORCE_SEPARATE_MI_TTY=1"
gdb_main_spawn_id and mi_spawn_id are added so that tests may expect
output from either channel.
While at it, inferior_spawn_id was not being cleared when gdb exits,
unlike the other spawn ids, thus a test that starts gdb more than once
would end up using a stale spawn id.
gdb/testsuite/ChangeLog:
2016-06-21 Pedro Alves <palves@redhat.com>
* README (Testsuite Parameters): Document FORCE_SEPARATE_MI_TTY.
* lib/gdb.exp (default_gdb_exit): Clear inferior_spawn_id.
* lib/mi-support.exp (mi_uncatched_gdb_exit): Unset
gdb_main_spawn_id, mi_spawn_id, unset inferior_spawn_id.
(gdb_main_spawn_id, mi_spawn_id): Declare and
comment.
(mi_create_inferior_pty): New procedure,
factored out from default_mi_gdb_start.
(switch_gdb_spawn_id, mi_gdb_start_separate_mi_tty): New
procedures.
(default_mi_gdb_start): Call mi_gdb_start_separate_mi_tty if the
separate-mi-tty option is specified, or SEPARATE_MI_TTY is set.
Use mi_create_inferior_pty.
(mi_gdb_start): Use eval to pass down args list.
This is an initial attempt to introduce some mechanisms to identify
racy testcases present in our testsuite. As can be seen in previous
discussions, racy tests are really bothersome and cause our BuildBot
to pollute the gdb-testers mailing list with hundreds of
false-positives messages every month. Hopefully, identifying these
racy tests in advance (and automatically) will contribute to the
reduction of noise traffic to gdb-testers, maybe to the point where we
will be able to send the failure messages directly to the authors of
the commits.
I spent some time trying to decide the best way to tackle this
problem, and decided that there is no silver bullet. Racy tests are
tricky and it is difficult to catch them, so the best solution I could
find (for now?) is to run our testsuite a number of times in a row,
and then compare the results (i.e., the gdb.sum files generated during
each run). The more times you run the tests, the more racy tests you
are likely to detect (at the expense of waiting longer and longer).
You can also run the tests in parallel, which makes things faster (and
contribute to catching more racy tests, because your machine will have
less resources for each test and some of them are likely to fail when
this happens). I did some tests in my machine (8-core i7, 16GB RAM),
and running the whole GDB testsuite 5 times using -j6 took 23 minutes.
Not bad.
In order to run the racy test machinery, you need to specify the
RACY_ITER environment variable. You will assign a number to this
variable, which represents the number of times you want to run the
tests. So, for example, if you want to run the whole testsuite 3
times in parallel (using 2 cores), you will do:
make check RACY_ITER=3 -j2
It is also possible to use the TESTS variable and specify which tests
you want to run:
make check TEST='gdb.base/default.exp' RACY_ITER=3 -j2
And so on. The output files will be put at the directory
gdb/testsuite/racy_outputs/.
After make invokes the necessary rules to run the tests, it finally
runs a Python script that will analyze the resulting gdb.sum files.
This Python script will read each file, and construct a series of sets
based on the results of the tests (one set for FAIL's, one for
PASS'es, one for KFAIL's, etc.). It will then do some set operations
and come up with a list of unique, sorted testcases that are racy.
The algorithm behind this is:
for state in PASS, FAIL, XFAIL, XPASS...; do
if a test's state in every sumfile is $state; then
it is not racy
else
it is racy
(The algorithm is actually a bit more complex than that, because it
takes into account other things in order to decide whether the test
should be ignored or not).
IOW, a test must have the same state in every sumfile.
After processing everything, the script prints the racy tests it could
identify on stdout. I am redirecting this to a file named racy.sum.
Something else that I wasn't sure how to deal with was non-unique
messages in our testsuite. I decided to do the same thing I do in our
BuildBot: include a unique identifier in the end of message, like:
gdb.base/xyz.exp: non-unique message
gdb.base/xyz.exp: non-unique message <<2>>
This means that you will have to be careful about them when you use
the racy.sum file.
I ran the script several times here, and it did a good job catching
some well-known racy tests. Overall, I am satisfied with this
approach and I think it will be helpful to have it upstream'ed. I
also intend to extend our BuildBot and create new, specialized
builders that will be responsible for detecting the racy tests every X
number of days.
2016-03-05 Sergio Durigan Junior <sergiodj@redhat.com>
* Makefile.in (DEFAULT_RACY_ITER): New variable.
(CHECK_TARGET_TMP): Likewise.
(check-single-racy): New rule.
(check-parallel-racy): Likewise.
(TEST_TARGETS): Adjust rule to account for RACY_ITER.
(do-check-parallel-racy): New rule.
(check-racy/%.exp): Likewise.
* README (Racy testcases): New section.
* analyze-racy-logs.py: New file.
Currently, you can cd to the gdb/testsuite/ dir and use
make check-parallel, instead of using FORCE_PARALLEL:
$ make -j8 check-parallel RUNTESTFLAGS="--target_board=native-gdbserver"
$ make -j8 check RUNTESTFLAGS="--target_board=native-gdbserver" FORCE_PARALLEL=1
But you can't do that in the build/gdb/ dir:
$ make check-parallel RUNTESTFLAGS="--target_board=native-gdbserver"
make: *** No rule to make target `check-parallel'. Stop.
I find check-parallel a bit more convenient, and more typo-proof, so
this patch makes it work from the gdb build dir too.
While documenting this in testsuite/README, I found that the parallel
testing mode would better be pulled out to its own section and
extended.
gdb/ChangeLog:
2016-02-11 Pedro Alves <palves@redhat.com>
* Makefile.in (check-parallel): New rule.
gdb/testsuite/ChangeLog:
2016-02-11 Pedro Alves <palves@redhat.com>
* README (Parallel testing): New section.
(GDB_PARALLEL): Rewrite.
(FORCE_PARALLEL): Document.
I couldn't find a test that verified the thread name functionality, so I
created a new one.
A target board can define gdb,no_thread_names if it doesn't support thread
names and wants to skip the tests that uses them.
This test has been made with Linux in mind. Not all platforms use
pthread_setname_np to set the thread name, but some #ifdefs can be added
later in order to support other platforms.
Tested on x86-64 Ubuntu 14.04, native and remote.
gdb/testsuite/ChangeLog:
* gdb.threads/names.exp: New file.
* gdb.threads/names.c: New file.
* README: Mention gdb,no_thread_names.
This integrates Jan Kratochvil's nice race reproducer from PR
testsuite/12649 into the testsuite infrustructure directly.
With this, one only has to do either 'make check-read1' or 'make check
READ1="1"' to preload the read1.so library into expect.
Currently only enabled for glibc/GNU systems, and if
build==host==target.
gdb/testsuite/ChangeLog:
* Makefile.in (EXTRA_RULES, CC): New variables, get from
configure.
(EXPECT): Handle READ1 being set.
(all): Depend on EXTRA_RULES.
(check-read1, expect-read1, read1.so, read1): New rules.
* README (Testsuite Parameters): Document the READ1 make variable.
(Race detection): New section.
* configure: Regenerate.
* configure.ac: If build==host==target, and running under a
GNU/glibc system, add read1 to the extra Makefile rules.
(EXTRA_RULES): AC_SUBST it.
* lib/read1.c: New file.
gdb/ChangeLog:
* Makefile.in (check-read1): New rule.
Right now we provide a board info entry, `gdb_init_command', that allows
one to send a single command to GDB before the program to be debugged is
started. This is useful e.g. for slow remote targets to change the
default "remotetimeout" setting. Occasionally I found a need to send
multiple commands instead, however this cannot be achieved with
`gdb_init_command'.
This change therefore extends the mechanism by adding a TCL list of GDB
commands to send, via a board info entry called `gdb_init_commands'.
There is no limit as to the number of commands put there. The old
`gdb_init_command' mechanism remains supported for compatibility with
existing people's environments.
* lib/gdb-utils.exp: New file.
* lib/gdb.exp (gdb_run_cmd): Call gdb_init_commands, replacing
inline `gdb_init_command' processing.
(gdb_start_cmd): Likewise.
* lib/mi-support.exp (mi_run_cmd): Likewise.
* README: Document `gdb_init_command' and `gdb_init_commands'.
Hi,
This patch is to add a new board setting gdb_reverse_timeout, which is
used to set timeout for all gdb.reverse test cases, which are usually
very slow and cause some TIMEOUT failures, for example, on some arm
boards. We have some alternatives to this approach, but I am not
satisfied with them:
- Increase the timeout value. This is the global change, and it may
cause some delay where actual failures happen.
- Set timeout by gdb_reverse_timeout in every gdb.reverse/*.exp.
Then, we have to touch every file under gdb.reverse.
In this patch, we choose a central place to set timeout for all tests
in gdb.reverse, which is convenient.
gdb/testsuite:
2014-05-20 Yao Qi <yao@codesourcery.com>
* lib/gdb.exp (gdb_init): Set timeout if test file is under
gdb.reverse directory and gdb_reverse_timeout exists in board
setting.
* README: Document gdb_reverse_timeout.
* Makefile.in (TESTS): New variable.
(expanded_tests, expanded_tests_or_none): New variables
(check-single): Pass $(expanded_tests_or_none) to runtest.
(check-parallel): Only run tests in $(TESTS) if non-empty.
(check/no-matching-tests-found): New rule.
* README: Document TESTS makefile variable.
Running catch-syscall.exp against a gdbserver that actually supports
it, we get:
FAIL: gdb.base/catch-syscall.exp: continue until exit (the program exited)
FAIL: gdb.base/catch-syscall.exp: continue until exit (the program exited)
FAIL: gdb.base/catch-syscall.exp: continue until exit (the program exited)
FAIL: gdb.base/catch-syscall.exp: continue until exit at catch syscall with unused syscall (mlock) (the program exited)
FAIL: gdb.base/catch-syscall.exp: continue until exit (the program exited)
The fail pattern is:
Catchpoint 2 (call to syscall exit_group), 0x000000323d4baa29 in _exit () from /lib64/libc.so.6
(gdb) PASS: gdb.base/catch-syscall.exp: program has called exit_group
delete breakpoints
Delete all breakpoints? (y or n) y
(gdb) info breakpoints
No breakpoints or watchpoints.
(gdb) break exit
Breakpoint 3 at 0x323d438bf0
(gdb) continue
Continuing.
[Inferior 1 (process 21081) exited normally]
That "break exit" + "continue" comes from:
> # gdb_continue_to_end:
> # The case where the target uses stubs has to be handled specially. If a
> # stub is used, we set a breakpoint at exit because we cannot rely on
> # exit() behavior of a remote target.
> #
The native-gdbserver.exp board, used to test against gdbserver in
"target remote" mode, triggers that case ($use_gdb_stub is true). So
gdb_continue_to_end doesn't work for catch-syscall.exp as here we
catch the exit_group and continue from that, expecting to see a real
program exit. I was about to post a patch that changes
catch-syscall.exp to call a new function that just always does what
gdb_continue_to_end does in the !$use_gdb_stub case. But, since
GDBserver doesn't really need this, in the end I thought it better to
teach the testsuite that there are stubs that know how to report
program exits, by adding a new "exit_is_reliable" board variable that
then gdb_continue_to_end checks.
Tested on x86_64 Fedora 17, native and gdbserver.
gdb/testsuite/
2013-10-02 Pedro Alves <palves@redhat.com>
* README (Board Settings): Document "exit_is_reliable".
* lib/gdb.exp (gdb_continue_to_end): Check whether the board says
running to exit reliably reports program exits.
* boards/native-gdbserver.exp: Set exit_is_reliable in the board
info.
* boards/native-stdio-gdbserver.exp: Likewise.
Tom de Vries
Alan Hayward
Jan Vrany
Sergio Durigan Junior
Pedro Alves
Tom Tromey
Simon Marchi
Jan Kratochvil
Jason Merrill
Maciej W. Rozycki
Yao Qi
Doug Evans
Stan Shebs