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Pedro Alves 3eb7562a98 Fix PR gdb/20418 - Problems with synchronous commands and new-ui
When executing commands on a secondary UI running the MI interpreter,
some commands that should be synchronous are not.  MI incorrectly
continues processing input right after the synchronous command is
sent, before the target stops.

The problem happens when we emit MI async events (=library-loaded,
etc.), and we go about restoring the previous terminal state, we end
up calling target_terminal_ours, which incorrectly always installs the
current UI's input_fd in the event loop...  That is, code like this:

   old_chain = make_cleanup_restore_target_terminal ();
   target_terminal_ours_for_output ();

   fprintf_unfiltered (mi->event_channel, "library-loaded");

...

   do_cleanups (old_chain);

The fix is to move the add_file_handler/delete_file_handler calls out
of target_terminal_$foo, making these completely no-ops unless called
with the main UI as current UI.

gdb/ChangeLog:
2016-08-09  Pedro Alves  <palves@redhat.com>

	PR gdb/20418
	* event-top.c (ui_register_input_event_handler)
	(ui_unregister_input_event_handler): New functions.
	(async_enable_stdin): Register input in the event loop.
	(async_disable_stdin): Unregister input from the event loop.
	(gdb_setup_readline): Register input in the event loop.
	* infrun.c (check_curr_ui_sync_execution_done): Register input in
	the event loop.
	* target.c (target_terminal_inferior): Don't unregister input from
	the event loop.
	(target_terminal_ours): Don't register input in the event loop.
	* target.h (target_terminal_inferior)
	(target_terminal_ours_for_output, target_terminal_ours): Update
	comments.
	* top.h (ui_register_input_event_handler)
	(ui_unregister_input_event_handler): New declarations.
	* utils.c (ui_unregister_input_event_handler_cleanup)
	(prepare_to_handle_input): New functions.
	(defaulted_query, prompt_for_continue): Use
	prepare_to_handle_input.

gdb/testsuite/ChangeLog:
2016-08-09  Pedro Alves  <palves@redhat.com>
	    Simon Marchi  <simon.marchi@ericsson.com>

	PR gdb/20418
	* gdb.mi/new-ui-mi-sync.c, gdb.mi/new-ui-mi-sync.exp: New files.
	* lib/mi-support.exp (mi_expect_interrupt): Remove anchors.
2016-08-09 22:50:45 +01:00
bfd Correct the calculation of the use_counts of merged .got entries. 2016-08-09 16:18:42 +01:00
binutils Fix seg-faults when running readelf on fuzzed binaries. 2016-08-08 13:20:04 +01:00
config
cpu
elfcpp
etc
gas Ensure ARM VPUSH and VPOP instructions do not affect more than 16 registers. 2016-08-05 11:26:13 +01:00
gdb Fix PR gdb/20418 - Problems with synchronous commands and new-ui 2016-08-09 22:50:45 +01:00
gold Fix aarch64_relocs.sh file mode 2016-07-27 16:26:42 +09:30
gprof Set BFD_VERSION to 2.27.51 2016-07-21 15:22:13 -07:00
include 2016-08-04 Thomas Preud'homme <thomas.preudhomme@arm.com> 2016-08-04 15:36:52 +01:00
intl
ld Support -pie for arm*-eabi targets. 2016-08-09 12:09:17 -07:00
libdecnumber
libiberty Synchronize libiberty sources with FSF GCC mainline version. 2016-08-02 13:26:28 +01:00
opcodes Fix some PowerPC VLE BFD issues and add some PowerPC VLE instructions. 2016-08-01 09:42:31 -07:00
readline
sim Wean gdb and sim off private libbfd.h header 2016-07-27 09:01:45 +09:30
texinfo
zlib
.cvsignore
.gitattributes
.gitignore
ChangeLog Enable the configuration of GDB for the NDS32 target. 2016-07-20 09:06:39 +01:00
compile
config-ml.in
config.guess
config.rpath
config.sub
configure Enable the configuration of GDB for the NDS32 target. 2016-07-20 09:06:39 +01:00
configure.ac Enable the configuration of GDB for the NDS32 target. 2016-07-20 09:06:39 +01:00
COPYING
COPYING.LIB
COPYING.LIBGLOSS
COPYING.NEWLIB
COPYING3
COPYING3.LIB
depcomp
djunpack.bat
install-sh
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ltgcc.m4
ltmain.sh
ltoptions.m4
ltsugar.m4
ltversion.m4
lt~obsolete.m4
MAINTAINERS
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		   README for GNU development tools

This directory contains various GNU compilers, assemblers, linkers, 
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	./configure 
	make

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	make install

(If the configure script can't determine your type of computer, give it
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	CC=gcc ./configure
	make

A similar example using csh:

	setenv CC gcc
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on where and how to report problems.