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# This testcase is part of GDB, the GNU debugger.

# Copyright 2009, 2010 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 .

# This test verifies that a local watchpoint isn't deleted when a

# thread other than the thread the local watchpoint was set in stops

# for a breakpoint.

if [target_info exists gdb,no_hardware_watchpoints] {

    return 0;

}

set testfile "local-watch-wrong-thread"

set srcfile ${testfile}.c

set binfile ${objdir}/${subdir}/${testfile}

if {[gdb_compile_pthreads \

         "${srcdir}/${subdir}/${srcfile}" \

         "${binfile}" executable {debug} ] != "" } {

    return -1

}

gdb_exit

gdb_start

gdb_reinitialize_dir $srcdir/$subdir

gdb_load ${binfile}

gdb_test_no_output "set can-use-hw-watchpoints 1" ""

if ![runto_main] then {

    fail "Can't run to main"

    return

}

set inc_line_1 [gdb_get_line_number "Loop increment 1"]

set inc_line_2 [gdb_get_line_number "Loop increment 2"]

set bkpt_here [gdb_get_line_number "set breakpoint here"]

# Run to the loop within thread_function0, so we can set our local

# watchpoint.

gdb_test "break ${srcfile}:${inc_line_1}" \

    "Breakpoint 2 at .*: file .*${srcfile}, line .*" \

    "breakpoint on thread_function0"

gdb_test "continue" \

    ".*Breakpoint 2.*thread_function0.*" \

    "continue to thread_function0"

delete_breakpoints

# Set the local watchpoint, and confirm that it traps as expected.

gdb_test "watch *myp" \

    "Hardware watchpoint 3\: \\*myp.*" \

    "set local watchpoint on *myp"

gdb_test "continue" \

    "Hardware watchpoint.*Old value.*New value.*thread_function0.*" \

    "local watchpoint triggers"

delete_breakpoints

# Recreate the watchpoint, but this time with a condition we know

# won't trigger.  This is so the watchpoint is inserted, and the

# target reports events, but GDB doesn't stop for them.  We want to

# hit the breakpoints on the other thread, and make sure this

# watchpoint isn't deleted then.

gdb_test "watch *myp if trigger != 0" \

    "Hardware watchpoint 4\: \\*myp.*" \

    "set local watchpoint on *myp, with false conditional"

# Run to a breakpoint on a different thread.  The previous local

# watchpoint should not be deleted with the standard 'the program has

# left the block in which its expression is valid', because the

# thread_function0 thread should still be running in the loop.

gdb_test "break ${srcfile}:${inc_line_2}" \

    "Breakpoint 5 at .*: file .*${srcfile}, line .*" \

    "breakpoint on the other thread"

gdb_test "continue" \

    "Breakpoint 5, thread_function1.*" \

    "the other thread stopped on breakpoint"

# Delete the new breakpoint, we don't need it anymore.

gdb_test_no_output "delete 5" ""

# Check if the local watchpoint hasn't been deleted (is still listed).

# This is simpler to check than expecting 'the program has left ...',

# and, is immune to string changes in that warning.

gdb_test "info breakpoints" \

    ".*4.*hw watchpoint.*keep.*y.*\\*myp.*" \

    "local watchpoint is still in breakpoint list"

# Make the watchpoint condition eval true.

gdb_test_no_output "set trigger=1" "let local watchpoint trigger"

gdb_test "continue" \

    "Hardware watchpoint.*Old value.*New value.*thread_function0.*" \

    "local watchpoint still triggers"

# Confirm that the local watchpoint is indeed deleted when

# thread_function0 returns.

gdb_test_no_output "set *myp=0" "let thread_function0 return"

gdb_test "break ${srcfile}:${bkpt_here}" \

    "Breakpoint 6 at .*: file .*${srcfile}, line .*" \

    "breakpoint on thread_function0's caller"

gdb_test "continue" \

    ".*Watchpoint.*deleted.*" \

    "local watchpoint automatically deleted"