Sequential test runs are stopping prematurely like this:
$ make check RUNTESTFLAGS="non-existing-program.exp server-exec-info.exp"
Running /home/pedro/gdb/mygit/src/gdb/testsuite/gdb.server/non-existing-program.exp ...
Running /home/pedro/gdb/mygit/src/gdb/testsuite/gdb.server/server-exec-info.exp ...
can not find channel named "exp6"
while executing
"match_max [match_max -d]"
(procedure "default_gdb_init" line 26)
invoked from within
"default_gdb_init $test_file_name"
(procedure "gdb_init" line 83)
invoked from within
"${tool}_init $test_file_name"
(procedure "runtest" line 18)
invoked from within
"runtest $test_name"
("foreach" body line 42)
invoked from within
...
make[2]: *** [check-single] Error 1
make[2]: Leaving directory `/home/pedro/gdb/mygit/build/gdb/testsuite'
make[1]: *** [check] Error 2
make[1]: Leaving directory `/home/pedro/gdb/mygit/build/gdb/testsuite'
make: *** [check] Error 2
default_gdb_init has this:
# Unlike most tests, we have a small number of tests that generate
# a very large amount of output. We therefore increase the expect
# buffer size to be able to contain the entire test output. This
# is especially needed by gdb.base/info-macros.exp.
match_max -d 65536
# Also set this value for the currently running GDB.
match_max [match_max -d]
It's the second match_max that is erroring. As that call does not
specify an explicit channel name with -i, expect defaults to
$spawn_id, which is pointing at a channel that is already gone. (If
the spawn_id variable is not set, match_max defaults to
$user_spawn_id / stdin/out).
gdb/testsuite/ChangeLog:
2015-05-08 Pedro Alves <palves@redhat.com>
* gdb.server/non-existing-program.exp: Unset spawn_id.
a4674e4efc