1# Copyright 2014-2020 Free Software Foundation, Inc. 2 3# This program is free software; you can redistribute it and/or modify 4# it under the terms of the GNU General Public License as published by 5# the Free Software Foundation; either version 3 of the License, or 6# (at your option) any later version. 7# 8# This program is distributed in the hope that it will be useful, 9# but WITHOUT ANY WARRANTY; without even the implied warranty of 10# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11# GNU General Public License for more details. 12# 13# You should have received a copy of the GNU General Public License 14# along with this program. If not, see <http://www.gnu.org/licenses/>. 15 16# Test that removing a single-step breakpoint that is placed at the 17# same address as another regular breakpoint leaves the regular 18# breakpoint inserted. 19 20standard_testfile 21set executable ${testfile} 22 23if {[prepare_for_testing "failed to prepare" $testfile $srcfile debug]} { 24 return -1 25} 26 27if ![runto_main] then { 28 fail "can't run to main" 29 return 0 30} 31 32gdb_breakpoint [gdb_get_line_number "set foo break here"] 33gdb_continue_to_breakpoint "first breakpoint" ".* set foo break here .*" 34 35# Get the address of the next instruction and set a breakpoint there. 36set next_insn_addr "" 37set test "disassemble main" 38gdb_test_multiple $test $test { 39 -re ".*=> $hex <\\+$decimal>:\[^\r\n\]+\r\n ($hex) .*$gdb_prompt $" { 40 set next_insn_addr $expect_out(1,string) 41 pass $test 42 } 43} 44 45if { $next_insn_addr == "" } { 46 return -1 47} 48 49gdb_test "b *$next_insn_addr" "Breakpoint .*" 50 51# So that GDB doesn't try to remove the regular breakpoint when the 52# step finishes. 53gdb_test_no_output "set breakpoint always-inserted on" 54 55# On software single-step targets, this step will want to momentarily 56# place a single-step breakpoint over the bar breakpoint, and then 57# remove it. But, a regular breakpoint is planted there already, and 58# with always-inserted on, should remain planted when the step 59# finishes. 60gdb_test "si" "Breakpoint .*" 61 62# If the breakpoint is still correctly inserted, then this jump should 63# re-trigger it. Otherwise, GDB will lose control and the program 64# will exit. See PR breakpoints/17000. 65gdb_test "jump *\$pc" "Breakpoint .*" 66