I searched for other spots that did not use the GNU style for
metasyntactic syntactic variables. This patch fixes most of the ones
I found in gdb proper. There are a few remaining in MI, but I was
unsure whether those should be touched.
gdb/ChangeLog
2018-09-16 Tom Tromey <tom@tromey.com>
* top.c (new_ui_command): Use GNU style for metasyntactic
variables.
* breakpoint.c (stopat_command): Use GNU style for metasyntactic
variables.
* maint.c (maintenance_translate_address): Remove "<>" around
text.
* interps.c (interpreter_exec_cmd): Use GNU style for
metasyntactic variables.
* nto-procfs.c (nto_procfs_target_info): Use GNU style for
metasyntactic variables.
* tracepoint.c (tfind_range_command): Use GNU style for
metasyntactic variables.
(tfind_outside_command): Likewise.
(_initialize_tracepoint): Likewise.
* remote.c (extended_remote_target::create_inferior): Use GNU
style for metasyntactic variables.
* sparc64-tdep.c (adi_examine_command): Use GNU style for
metasyntactic variables.
(adi_assign_command): Likewise.
gdb/testsuite/ChangeLog
2018-09-16 Tom Tromey <tom@tromey.com>
* gdb.base/new-ui.exp (do_execution_tests): Update.
* gdb.base/dbx.exp (test_breakpoints): Update.
I noticed gdb.base/new-ui.exp failing once here with:
FAIL: gdb.base/new-ui.exp: do_test: delete all breakpoints on extra console (got interactive prompt)
FAIL: gdb.base/new-ui.exp: do_test: main console: next causes no spurious output on other console
FAIL: gdb.base/new-ui.exp: do_test: main console: breakpoint hit reported on other console
The problem is 100% reproducible with check-read1:
$ make check-read1 TESTS="gdb.*/new-ui.exp"
testsuite/gdb.log shows:
delete
Delete all breakpoints? (y or n) [answered Y; input not from terminal]
(gdb) FAIL: gdb.base/new-ui.exp: do_test: delete all breakpoints on extra console (got interactive prompt)
This commit fixes the problem.
gdb/testsuite/ChangeLog:
2017-10-24 Pedro Alves <palves@redhat.com>
* gdb.base/new-ui.exp (do_test): Split "delete all breakpoints on
extra console" test in two stages.
This is a follow-up to
https://sourceware.org/ml/gdb-patches/2017-02/msg00261.html
This patch restricts queries to the main UI, which allows to avoid two
different problems.
The first one is that GDB is issuing queries on secondary MI channels
for which a TTY is allocated. The second one is that GDB is not able to
handle queries on two (CLI) UIs simultaneously. Restricting queries to
the main UI allows to bypass these two problems.
More details on how/why these two problems happen:
1. Queries on secondary MI UI
The current criterion to decide if we should query the user is whether
the input stream is a TTY. The original way to start GDB in MI mode
from a front-end was to create a subprocess with pipes to its
stdin/stdout. In this case, the input was considered non-interactive
and queries were auto-answered. Now that front-ends can create the MI
channel as a separate UI connected to a dedicated TTY, GDB now
considers this input stream as interactive and sends queries to it.
By restricting queries to the main UI, we make sure we never query on
the secondary MI UI.
2. Simultaneous queries
As Pedro stated it, when you have two queries on two different CLI UIs
at the same time, you end up with the following pseudo stack:
#0 gdb_readline_wrapper
#1 defaulted_query // for UI #2#2 handle_command
#3 execute_command ("handle SIGTRAP" ....
#4 stdin_event_handler // input on UI #2#5 gdb_do_one_event
#7 gdb_readline_wrapper
#8 defaulted_query // for UI #1#9 handle_command
#10 execute_command ("handle SIGINT" ....
#11 stdin_event_handler // input on UI #1#12 gdb_do_one_event
#13 gdb_readline_wrapper
trying to answer the query on UI #1 will therefore answer for UI #2.
By restricting the queries to the main UI, we ensure that there will
never be more than one pending query, since you can't have two queries
on a UI at the same time.
I added a snippet to gdb.base/new-ui.exp to verify that we get a query
on the main UI, but that we don't on the secondary one (or, more
precisely, that it gets auto-answered).
gdb/ChangeLog:
* utils.c (defaulted_query): Don't query on secondary UIs.
gdb/testsuite/ChangeLog:
* gdb.base/new-ui.exp (do_test): Test queries behavior on main
and extra UIs.
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.
When a bad interpreter name is passed to new-ui, such as:
(gdb) new-ui bloop /dev/pts/10
A partially created UI is left in the UI list, with interp set to NULL.
Trying to do anything that will print on this UI (such as "start") will
cause a segmentation fault.
Changes in v2:
- Use with_test_prefix to namespace test procedures
- Give an explicit stable test name
- Add a "bad terminal path" test
- Remove useless runto_main
- Add missing intro comments
I did not factor out the pty spawn, as there is some magic involved I
don't quite understand. But it wouldn't bring that much anyway.
gdb/ChangeLog:
* top.h (make_delete_ui_cleanup): New declaration.
* top.c (delete_ui_cleanup): New function.
(make_delete_ui_cleanup): New function.
(new_ui_command): Create restore_ui cleanup earlier, create a
delete_ui cleanup and discard it on success.
gdb/testsuite/ChangeLog:
* gdb.base/new-ui.exp (do_test_invalid_args): New
procedure.
This adds a test that uses new-ui to create a secondary console, and
then runs some basic smoke tests. It ensures that:
- synchronous commands send output to the UI that initiated it
- asynchronous events like breakpoint hits are reported on all
consoles.
- "new-ui" without arguments doesn't crash.
- The "new-ui" command doesn't repeat.
gdb/testsuite/ChangeLog:
2016-06-21 Pedro Alves <palves@redhat.com>
* gdb.base/new-ui.exp: New file.
* lib/mi-support.exp (switch_gdb_spawn_id): Move to ...
* lib/gdb.exp (switch_gdb_spawn_id): ... here.
(with_spawn_id): New procedure.
Tom Tromey
Joel Brobecker
Pedro Alves
Simon Marchi
Luis Machado