binutils-gdb/gdb/testsuite/gdb.base/quit.exp
Tom Tromey 36cf1806a8 PR gdb/20604 - fix "quit" when an invalid expression is used
This fixes PR gdb/20604.  The bug here is that passing an invalid
expression to "quit" -- e.g., "quit()" -- causes gdb to enter a
non-functioning state.

The immediate problem is that quit_force resets the terminal before
evaluating the expression.  However, it seemed to me that it doesn't
really make sense to pass the quit_force argument to kill_or_detach
(which passes it to to_detach), first because conflating the exit
status for "quit" and the signal to pass when detaching doesn't make
sense, and second because to_detach implementations generally only
accept a constant here, while "quit" accepts an expression.  So, I
removed that.

As an aside, I think the "detach SIGNO" functionality is not
documented.

Built and regtested on x86-64 Fedora 24.

2016-09-21  Tom Tromey  <tom@tromey.com>

	PR gdb/20604:
	* top.h (quit_force): Update.
	* top.c (quit_force): Changed type of first argument.  Don't
	evaluate expression.  Pass NULL to kill_or_detach.
	* cli/cli-cmds.c (quit_command): Evaluate "args".

2016-09-21  Tom Tromey  <tom@tromey.com>

	PR gdb/20604:
	* gdb.base/quit.exp: New file.
2016-09-21 11:39:37 -06:00

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# Copyright (C) 2016 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/>.
# Check the "quit" command.
clean_restart
# Test that a syntax error causes quit to abort.
# Regression test for PR gdb/20604.
gdb_test "quit()" "A syntax error in expression, near .*" \
"quit with syntax error"
# Test that an expression can be used to set the error code.
send_gdb "quit 22+1\n"
set result [wait -i $gdb_spawn_id]
verbose $result
if {[lindex $result 2] == 0 && [lindex $result 3] == 23} {
pass "quit with expression"
} else {
fail "quit with expression"
}
close $gdb_spawn_id
clear_gdb_spawn_id