gdb/testsuite/gdb.multi/watchpoint-multi-exit.exp

# Copyright 2016-2018 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/>.

# Make sure that if an inferior exits or is detached/killed, its
# watchpoints don't end up with stale locations, preventing resumption
# of other inferiors.

standard_testfile

if {[build_executable "failed to build" $testfile $srcfile {debug}]} {
    return -1
}

# The test proper.  DISPOSE indicates how to dispose of the fork
# child.  Can be either "kill", "detach", or "exit" (to continue it to
# normal exit).
proc do_test {dispose} {
    global binfile

    clean_restart $binfile

    gdb_test_no_output "set follow-fork child"
    gdb_test_no_output "set detach-on-fork off"

    if ![runto "child_function"] {
	fail "can't run to child_function"
	return
    }

    gdb_test "watch globalvar" "atchpoint \[0-9\]+: globalvar" \
	"set watchpoint on inferior 2"

    # Dispose of the inferior.  This should get rid of this inferior's
    # watchpoint locations.
    if {$dispose == "kill"} {
	gdb_test "kill" "" "kill inferior 2" \
	    "Kill the program being debugged.*y or n. $" "y"
    } elseif {$dispose == "detach"} {
	gdb_test "detach" ".*" "detach inferior 2"
    } elseif {$dispose == "exit"} {
	gdb_test "continue" ".*exited normally.*" "run to exit inferior 2"
    } else {
	perror "unhandled dispose: $dispose"
    }

    gdb_test "inferior 1" "witching to inferior 1 .*" \
	"switch back to inferior 1"

    if {$dispose == "kill"} {
	gdb_test "print expect_signaled = 1" " = 1"
    }

    gdb_breakpoint "marker"

    # Now continue inferior 1.  Before GDB was fixed, watchpoints for
    # inferior 2 managed to be left behind.  When GDB realized that
    # they hadn't been inserted, the continue command was aborted:
    #
    #  (gdb) continue
    #  Continuing.
    #  Warning:
    #  Could not insert hardware watchpoint 2.
    #  Could not insert hardware breakpoints:
    #  You may have requested too many hardware breakpoints/watchpoints.
    #
    #  Command aborted.
    #  (gdb)
    #
    gdb_test "continue" "Breakpoint \[0-9\]+, marker .*" \
	"continue in inferior 1"
}

foreach_with_prefix dispose {"kill" "detach" "exit"} {
    do_test $dispose
}