Several regressions and we branch soon.

[Doug Evans <dje at google dot com>]

Hi.

fyi, I'm seeing regressions in the following tests on amd64-linux.

FAIL: gdb.threads/attach-stopped.exp: nonthreaded: attach2 to stopped bt
FAIL: gdb.threads/attach-stopped.exp: threaded: attach2 to stopped bt
FAIL: gdb.base/attach-pie-noexec.exp: attach
FAIL: gdb.base/attach-pie-noexec.exp: info shared
FAIL: gdb.base/attach-twice.exp: attach
FAIL: gdb.base/attach.exp: attach1, after setting file
FAIL: gdb.base/attach.exp: attach1 detach (the program is no longer running)
FAIL: gdb.base/attach.exp: attach2, with no file
FAIL: gdb.base/attach.exp: after attach2, set should_exit
FAIL: gdb.base/attach.exp: continue to breakpoint: postloop (the
program is no longer running)
FAIL: gdb.base/attach.exp: continue until exit at after attach2, exit
(the program is no longer running)
FAIL: gdb.base/attach.exp: attach when process' a.out not in cwd
FAIL: gdb.base/attach.exp: continue until exit (the program is no
longer running)
FAIL: gdb.base/attach.exp: starting with --pid (timeout)
FAIL: gdb.base/attach.exp: cmdline attach run: run to prompt
UNRESOLVED: gdb.base/attach.exp: cmdline attach run: run to main
FAIL: gdb.base/break-interp.exp: LDprelinkNOdebugNO:
BINprelinkNOdebugNOpieNO: attach: attach main bt
FAIL: gdb.base/break-interp.exp: LDprelinkNOdebugNO:
BINprelinkNOdebugNOpieYES: attach: seen displacement message as
NONZERO
... plus lots more for break-interp.exp ...
FAIL: gdb.base/default.exp: info set
FAIL: gdb.base/default.exp: show
FAIL: gdb.base/dprintf-detach.exp: bai=on ds=gdb dd=on: re-attach to inferior
FAIL: gdb.base/dprintf-detach.exp: bai=on ds=gdb dd=off: re-attach to inferior
FAIL: gdb.base/dprintf-detach.exp: bai=on ds=call dd=on: re-attach to inferior
FAIL: gdb.base/dprintf-detach.exp: bai=on ds=call dd=off: re-attach to inferior
FAIL: gdb.base/dprintf-detach.exp: bai=on ds=agent dd=on: re-attach to inferior
FAIL: gdb.base/dprintf-detach.exp: bai=on ds=agent dd=off: re-attach to inferior
FAIL: gdb.base/dprintf-detach.exp: bai=off ds=gdb dd=on: re-attach to inferior
FAIL: gdb.base/dprintf-detach.exp: bai=off ds=gdb dd=off: re-attach to inferior
FAIL: gdb.base/dprintf-detach.exp: bai=off ds=call dd=on: re-attach to inferior
FAIL: gdb.base/dprintf-detach.exp: bai=off ds=call dd=off: re-attach to inferior
FAIL: gdb.base/dprintf-detach.exp: bai=off ds=agent dd=on: re-attach to inferior
FAIL: gdb.base/dprintf-detach.exp: bai=off ds=agent dd=off: re-attach
to inferior
FAIL: gdb.base/gnu_vector.exp: call add_singlevecs
FAIL: gdb.base/gnu_vector.exp: continue to add_some_intvecs
FAIL: gdb.base/gnu_vector.exp: continue to add_some_intvecs (the
program is no longer running)
FAIL: gdb.base/gnu_vector.exp: set vector return value
FAIL: gdb.multi/multi-attach.exp: backtrace 1
FAIL: gdb.multi/multi-attach.exp: backtrace 2
FAIL: gdb.python/py-sync-interp.exp: attach and where
FAIL: gdb.server/ext-attach.exp: backtrace 1
FAIL: gdb.server/ext-attach.exp: detach (the program is no longer running)
FAIL: gdb.server/ext-attach.exp: backtrace 2
FAIL: gdb.server/ext-attach.exp: monitor exit
FAIL: gdb.threads/attach-into-signal.exp: nonthreaded: detach (the
program is no longer running)
UNRESOLVED: gdb.threads/attach-into-signal.exp: nonthreaded: attach
(pass 1), pending signal catch
FAIL: gdb.threads/attach-into-signal.exp: threaded: thread apply 2
print $_siginfo.si_signo
FAIL: gdb.threads/attach-into-signal.exp: threaded: detach (the
program is no longer running)
UNRESOLVED: gdb.threads/attach-into-signal.exp: threaded: attach (pass
1), pending signal catch

I haven't root-caused any of them yet.
Is anyone else seeing these on amd64-linux?