1# Copyright (C) 2013-2020 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# Regression test for PR15693. A breakpoint with a condition that 17# calls a function that evaluates false would result in a spurious 18# *running event sent to the frontend each time the breakpoint is hit 19# (and the target re-resumed). Like: 20# 21# -exec-continue 22# ^running 23# *running,thread-id="all" 24# (gdb) 25# *running,thread-id="all" 26# *running,thread-id="all" 27# *running,thread-id="all" 28# *running,thread-id="all" 29# *running,thread-id="all" 30# ... 31 32load_lib mi-support.exp 33set MIFLAGS "-i=mi" 34 35# Run either the multi-threaded or the single-threaded variant of the 36# test, as determined by VARIANT. 37proc test { variant } { 38 global gdb_test_file_name 39 global testfile srcdir subdir srcfile srcfile2 binfile 40 global mi_gdb_prompt async 41 42 with_test_prefix "$variant" { 43 gdb_exit 44 if [mi_gdb_start] { 45 continue 46 } 47 48 set options {debug} 49 if {$variant == "mt" } { 50 lappend options "pthreads" 51 } 52 53 # Don't use standard_testfile as we need a different binary 54 # for each variant. 55 set testfile $gdb_test_file_name-$variant 56 set binfile [standard_output_file ${testfile}] 57 set srcfile $testfile.c 58 set srcfile2 $gdb_test_file_name.c 59 60 if {[build_executable "failed to prepare" \ 61 $testfile \ 62 "${srcfile} ${srcfile2}" \ 63 $options] == -1} { 64 return -1 65 } 66 67 mi_delete_breakpoints 68 mi_gdb_reinitialize_dir $srcdir/$subdir 69 mi_gdb_reinitialize_dir $srcdir/$subdir 70 mi_gdb_load ${binfile} 71 72 mi_runto test 73 74 # Leave the breakpoint at 'test' set, on purpose. The next 75 # resume shall emit a single '*running,thread-id="all"', even 76 # if GDB needs to step over a breakpoint (that is, even if GDB 77 # needs to run only one thread for a little bit). 78 79 set bp_location [gdb_get_line_number "set breakpoint here" $srcfile2] 80 set bp_location_end [gdb_get_line_number "set end breakpoint here" $srcfile2] 81 82 mi_gdb_test "-break-insert -c return_false() $srcfile2:$bp_location" ".*" \ 83 "insert conditional breakpoint" 84 85 mi_gdb_test "-break-insert $srcfile2:$bp_location_end" ".*" \ 86 "insert end breakpoint" 87 88 set msg "no spurious *running notifications" 89 send_gdb "-exec-continue\n" 90 gdb_expect { 91 -re "\\*running.*\\*running.*\\*stopped" { 92 fail $msg 93 } 94 -re "\\^running\r\n\\*running,thread-id=\"all\"\r\n${mi_gdb_prompt}.*\\*stopped" { 95 pass $msg 96 } 97 timeout { 98 fail "$msg (timeout)" 99 } 100 } 101 102 # In sync mode, there's an extra prompt after *stopped. Consume it. 103 if {!$async} { 104 gdb_expect { 105 -re "$mi_gdb_prompt" { 106 } 107 } 108 } 109 } 110} 111 112# Single-threaded. 113test "st" 114 115# Multi-threaded. 116test "mt" 117