binutils-gdb/gdb/testsuite/gdb.server/non-existing-program.exp
Pedro Alves a4674e4efc Fix sequential gdb test runs
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.
2015-05-08 18:06:46 +01:00

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# This testcase is part of GDB, the GNU debugger.
# Copyright 2015 Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# Test starting gdbserver passing it the name of a non-existing
# program.
load_lib gdbserver-support.exp
standard_testfile
if { [skip_gdbserver_tests] } {
return 0
}
set gdbserver [find_gdbserver]
if { $gdbserver == "" } {
fail "could not find gdbserver"
return
}
# Fire off gdbserver. The port doesn't really matter, gdbserver tries
# to spawn the program before opening the connection.
set spawn_id [remote_spawn target "$gdbserver stdio non-existing-program"]
set msg "gdbserver exits cleanly"
set saw_exiting 0
expect {
# This is what we get on ptrace-based targets.
-re "stdin/stdout redirected.*No program to debug\r\nExiting\r\n$" {
set saw_exiting 1
exp_continue
}
# This is what we get on Windows.
-re "Error creating process\r\n\r\nExiting\r\n$" {
set saw_exiting 1
exp_continue
}
-re "A problem internal to GDBserver has been detected" {
fail "$msg (GDBserver internal error)"
wait
}
eof {
gdb_assert $saw_exiting $msg
wait
}
timeout {
fail "$msg (timeout)"
}
}
# expect defaults to spawn_id in many places. Avoid confusing any
# following code.
unset spawn_id