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Fix mi_gdb_exit with secondary MI channels

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Tests that use a secondary MI channel (i.e., either tests that call
mi_gdb_start with separate-mi-tty, or all tests when
FORCE_SEPARATE_MI_TTY=1 is specified on the make check command line),
don't close GDB correctly.

E.g., if you run gdb.mi/mi-exec-run.exp in a loop:

  while true; do make check TESTS="gdb.mi/mi-exec-run.exp"; done

you can see more than one gdb running at the same time:

  $ ps -ef | grep -v grep | grep "gdb/gdb"
  pedro      40507       1  7 15:47 ?        00:00:00 /home/pedro/gdb/build/gdb/testsuite/../../gdb/gdb -nw -nx -data-directory /home/pedro/gdb/build/gdb/testsuite/../data-directory
  pedro      40562       1  0 15:47 ?        00:00:00 /home/pedro/gdb/build/gdb/testsuite/../../gdb/gdb -nw -nx -data-directory /home/pedro/gdb/build/gdb/testsuite/../data-directory
  pedro      40727       1  0 15:47 ?        00:00:00 /home/pedro/gdb/build/gdb/testsuite/../../gdb/gdb -nw -nx -data-directory /home/pedro/gdb/build/gdb/testsuite/../data-directory
  pedro      40786       1  0 15:47 ?        00:00:00 /home/pedro/gdb/build/gdb/testsuite/../../gdb/gdb -nw -nx -data-directory /home/pedro/gdb/build/gdb/testsuite/../data-directory

This commit fixes it.

gdb/testsuite/ChangeLog:

	* lib/mi-support.exp (mi_uncatched_gdb_exit) Switch to the main
	spawn_id before calling remote_close.  Close secondary MI channel.
This commit is contained in:
Pedro Alves
2020-09-20 15:58:26 +01:00
parent dbc49e9ffa
commit b167e53f05
2 changed files with 17 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
gdb/testsuite/ChangeLog
View File

@ -1,3 +1,8 @@
2020-09-20 Pedro Alves <pedro@palves.net>
* lib/mi-support.exp (mi_uncatched_gdb_exit) Switch to the main
spawn_id before calling remote_close. Close secondary MI channel.
2020-09-20 Pedro Alves <pedro@palves.net>
* gdb.base/testenv.exp (find_env): Bail out if printing 'envp[$i]'

12
gdb/testsuite/lib/mi-support.exp
View File

@ -89,6 +89,18 @@ proc mi_uncatched_gdb_exit {} {
}
}
# Switch back to the main spawn id, so that remote_close below
# closes it, and not a secondary channel. Closing a secondary
# channel does not make GDB exit.
if {$gdb_spawn_id != $gdb_main_spawn_id} {
switch_gdb_spawn_id $gdb_main_spawn_id
}
# Close secondary MI channel, if there's one.
if {$mi_spawn_id != $gdb_main_spawn_id} {
close -i $mi_spawn_id
}
if ![is_remote host] {
remote_close host
}