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093da43d2a
Make sure to unlink the related breakpoint when the watchpoint instance is deleted. This prevents having a wp-related breakpoint that is linked to a NULL watchpoint (e.g. the watchpoint instance is being deleted when the 'watch' command fails). With the below scenario, having such a left out breakpoint will lead to a GDB hang, and this is due to an infinite loop when deleting all inferior breakpoints. Scenario: (gdb) set can-use-hw-watchpoints 0 (gdb) awatch <SCOPE VAR> Can't set read/access watchpoint when hardware watchpoints are disabled. (gdb) rwatch <SCOPE VAR> Can't set read/access watchpoint when hardware watchpoints are disabled. (gdb) <continue the program until the end> >> HANG << Signed-off-by: Mohamed Bouhaouel <mohamed.bouhaouel@intel.com> Reviewed-by: Bruno Larsen <blarsen@redhat.com>
41 lines
1.5 KiB
Plaintext
41 lines
1.5 KiB
Plaintext
# Copyright 2023 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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# Test that GDB displays the correct error message when hardware watchpoints
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# are not supported or explicitly disabled. Test also that GDB terminates
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# successfully after several attempts to insert a hardware watchpoint.
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standard_testfile
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if {[prepare_for_testing "failed to prepare" ${testfile} ${srcfile}]} {
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return -1
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}
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gdb_test_no_output "set can-use-hw-watchpoints 0"
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if {![runto_main]} {
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return -1
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}
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gdb_test "awatch a" \
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"Can't set read/access watchpoint when hardware watchpoints are disabled." \
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"unsuccessful attempt to create an access watchpoint"
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gdb_test "rwatch b" \
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"Can't set read/access watchpoint when hardware watchpoints are disabled." \
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"unsuccessful attempt to create a read watchpoint"
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# The program continues until termination.
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gdb_continue_to_end
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