[PATCH 0/7] GDB busy loop when interrupting non-stop program (PR 26199)

[Pedro Alves <pedro@palves.net>]

This patch series fixes PR 26199, a GDB 10 blocker.

I discussed how to fix this with Simon, and we came to the conclusion
that we can fix it by removing code.  Easy.  :-) That's the last patch
in the series.

Well, not so easy, actually... :-/

Doing that alone caused gdb.multi/multi-target.exp to regress.  And
the reason was that the fix for PR 261299 made that testcase trip on a
few latent bugs...  One of those bugs also caused a similar 100% cpu
busy loop.

And then, while fixing those, I added a new test scenario to
gdb.multi/multi-target.exp to exercise the TARGET_WAITKIND_NO_RESUMED
handling fixes in this series.  That new test requires sending Ctrl-C
to GDB after the test is done with, in order to cleanly kill gdbserver
via "monitor exit".  But, that Ctrl-C didn't work, due to an issue
with GDB's terminal handling, GDB would just hang...

That's all fixed by this series.

Pedro Alves (6):
  Fix spurious unhandled remote %Stop notifications
  Fix latent bug in target_pass_ctrlc
  Avoid constant stream of TARGET_WAITKIND_NO_RESUMED
  Fix handle_no_resumed w/ multiple targets
  Make handle_no_resumed transfer terminal
  Testcase for previous handle_no_resumed fixes

Simon Marchi (1):
  Fix GDB busy loop when interrupting non-stop program (PR 26199)

 gdb/infrun.c                             | 116 +++++++++++++++++++++----------
 gdb/remote.c                             |  15 +++-
 gdb/target.c                             |   2 +-
 gdb/testsuite/gdb.multi/multi-target.c   |   4 +-
 gdb/testsuite/gdb.multi/multi-target.exp |  76 ++++++++++++++++++++
 5 files changed, 173 insertions(+), 40 deletions(-)


base-commit: ad8464f799a4c96c7ab8bdfec3f95846cf54f9b0
-- 
2.14.5