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118 lines
4.0 KiB
Plaintext
118 lines
4.0 KiB
Plaintext
# This testcase is part of GDB, the GNU debugger.
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# Copyright 2009-2020 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# This test verifies that a local watchpoint isn't deleted when a
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# thread other than the thread the local watchpoint was set in stops
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# for a breakpoint.
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if {[skip_hw_watchpoint_multi_tests]} {
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return 0
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}
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standard_testfile
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if {[gdb_compile_pthreads \
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"${srcdir}/${subdir}/${srcfile}" \
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"${binfile}" executable {debug} ] != "" } {
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return -1
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}
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clean_restart ${binfile}
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gdb_test_no_output "set can-use-hw-watchpoints 1" ""
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if ![runto_main] then {
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fail "can't run to main"
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return
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}
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set inc_line_1 [gdb_get_line_number "Loop increment 1"]
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set inc_line_2 [gdb_get_line_number "Loop increment 2"]
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set bkpt_here [gdb_get_line_number "set breakpoint here"]
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# Run to the loop within thread_function0, so we can set our local
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# watchpoint.
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gdb_test "break ${srcfile}:${inc_line_1}" \
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"Breakpoint 2 at .*: file .*${srcfile}, line .*" \
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"breakpoint on thread_function0"
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gdb_test "continue" \
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".*Breakpoint 2.*thread_function0.*" \
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"continue to thread_function0"
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delete_breakpoints
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# Set the local watchpoint, and confirm that it traps as expected.
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gdb_test "watch *myp" \
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"Hardware watchpoint 3\: \\*myp.*" \
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"set local watchpoint on *myp"
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gdb_test "continue" \
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"Hardware watchpoint.*Old value.*New value.*thread_function0.*" \
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"local watchpoint triggers"
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delete_breakpoints
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# Recreate the watchpoint, but this time with a condition we know
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# won't trigger. This is so the watchpoint is inserted, and the
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# target reports events, but GDB doesn't stop for them. We want to
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# hit the breakpoints on the other thread, and make sure this
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# watchpoint isn't deleted then.
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gdb_test "watch *myp if trigger != 0" \
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"Hardware watchpoint 4\: \\*myp.*" \
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"set local watchpoint on *myp, with false conditional"
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# Run to a breakpoint on a different thread. The previous local
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# watchpoint should not be deleted with the standard 'the program has
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# left the block in which its expression is valid', because the
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# thread_function0 thread should still be running in the loop.
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gdb_test "break ${srcfile}:${inc_line_2}" \
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"Breakpoint 5 at .*: file .*${srcfile}, line .*" \
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"breakpoint on the other thread"
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gdb_test "continue" \
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"Breakpoint 5, thread_function1.*" \
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"the other thread stopped on breakpoint"
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# Delete the new breakpoint, we don't need it anymore.
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gdb_test_no_output "delete 5" ""
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# Check if the local watchpoint hasn't been deleted (is still listed).
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# This is simpler to check than expecting 'the program has left ...',
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# and, is immune to string changes in that warning.
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gdb_test "info breakpoints" \
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".*4.*hw watchpoint.*keep.*y.*\\*myp.*" \
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"local watchpoint is still in breakpoint list"
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# Make the watchpoint condition eval true.
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gdb_test_no_output "set trigger=1" "let local watchpoint trigger"
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gdb_test "continue" \
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"Hardware watchpoint.*Old value.*New value.*thread_function0.*" \
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"local watchpoint still triggers"
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# Confirm that the local watchpoint is indeed deleted when
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# thread_function0 returns.
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gdb_test_no_output "set *myp=0" "let thread_function0 return"
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gdb_test "break ${srcfile}:${bkpt_here}" \
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"Breakpoint 6 at .*: file .*${srcfile}, line .*" \
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"breakpoint on thread_function0's caller"
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gdb_test "continue" \
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".*Watchpoint.*deleted.*" \
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"local watchpoint automatically deleted"
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