PR breakpoints/17000: user breakpoint not inserted if software-single-step at same location - test
GDB gets confused when removing a software single-step breakpoint that is at the same address as another breakpoint. Add another kfailed test. gdb/testsuite/ 2014-06-03 Pedro Alves <palves@redhat.com> PR breakpoints/17000 * gdb.base/sss-bp-on-user-bp-2.c: New file. * gdb.base/sss-bp-on-user-bp-2.exp: New file.
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2014-06-03 Pedro Alves <palves@redhat.com>
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PR breakpoints/17000
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* gdb.base/sss-bp-on-user-bp-2.c: New file.
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* gdb.base/sss-bp-on-user-bp-2.exp: New file.
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2014-06-02 Doug Evans <xdje42@gmail.com>
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* gdb.guile/scm-parameter.exp: New file.
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/* This testcase is part of GDB, the GNU debugger.
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Copyright 2014 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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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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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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static void
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test (void)
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{
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label: asm (" nop"); label2: asm (" nop"); /* must be a single line */
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}
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int
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main (void)
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{
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test ();
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return 0;
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}
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# Copyright (C) 2014 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 doesn't get confused in the following scenario
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# (PR breakpoints/17000). Say, we have this program:
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#
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# => 0xff000001 INSN1
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# 0xff000002 INSN2
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#
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# The PC currently points at INSN1.
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#
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# 1 - User sets a breakpoint at 0xff000002 (INSN2).
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#
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# 2 - User steps. On software single-step archs, this sets a software
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# single-step breakpoint at 0xff000002 (INSN2) too.
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#
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# 3 - User deletes breakpoint (INSN2) before the single-step finishes.
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#
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# 4 - The single-step finishes, and GDB removes the single-step
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# breakpoint.
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standard_testfile
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if {[prepare_for_testing "failed to prepare" $testfile $srcfile debug]} {
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return -1
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}
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if ![runto_main] {
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fail "Can't run to main"
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return 0
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}
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set line_re "\[^\r\n\]*"
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gdb_test "b test:label" "Breakpoint .*"
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gdb_continue_to_breakpoint "run past setup"
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delete_breakpoints
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# So we can precisely control breakpoint insertion order.
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gdb_test_no_output "set breakpoint always-inserted on"
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# Capture disassembly output. PREFIX is used as test prefix. The
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# current instruction indicator (=>) is stripped away.
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proc disassemble { prefix } {
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with_test_prefix "$prefix" {
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set output [capture_command_output "disassemble test" ""]
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return [string map {"=>" " "} $output]
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}
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}
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# Issue a stepi and immediately delete the user breakpoint that is set
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# at the same address as the software single-step breakpoint. Do this
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# in a user defined command, so that the stepi's trap doesn't have a
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# chance to be handled before further input is processed. We then
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# compare before/after disassembly. GDB should be able to handle
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# deleting the user breakpoint before deleting the single-step
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# breakpoint. E.g., we shouldn't see breakpoint instructions in the
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# disassembly.
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set disasm_before [disassemble "before"]
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gdb_test "b test:label2" ".*" "set breakpoint where si will land"
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set test "define stepi_del_break"
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gdb_test_multiple $test $test {
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-re "Type commands for definition of \"stepi_del_break\".\r\nEnd with a line saying just \"end\".\r\n>$" {
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gdb_test "si&\ndel \$bpnum\nend" "" $test
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}
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}
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set command "stepi_del_break"
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set test $command
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setup_kfail "breakpoints/17000" "*-*-*"
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gdb_test_multiple $command $test {
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-re "^$command\r\n$gdb_prompt " {
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# Note no end anchor, because "si&" finishes and prints the
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# current frame/line after the prompt is printed.
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pass $test
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}
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}
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# Now consume the output of the finished "si&".
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set test "si& finished"
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gdb_test_multiple "" $test {
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-re "must be a single line \\\*/\r\n" {
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pass $test
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}
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}
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set disasm_after [disassemble "after"]
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set test "before/after disassembly matches"
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if ![string compare $disasm_before $disasm_after] {
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pass $test
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} else {
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fail $test
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}
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