# Copyright (C) 2013-2015 Free Software Foundation, Inc. # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see <http://www.gnu.org/licenses/>. # Regression test for PR15693. A breakpoint with a condition that # calls a function that evaluates false would result in a spurious # *running event sent to the frontend each time the breakpoint is hit # (and the target re-resumed). Like: # # -exec-continue # ^running # *running,thread-id="all" # (gdb) # *running,thread-id="all" # *running,thread-id="all" # *running,thread-id="all" # *running,thread-id="all" # *running,thread-id="all" # ... load_lib mi-support.exp set MIFLAGS "-i=mi" # Run either the multi-threaded or the single-threaded variant of the # test, as determined by VARIANT. proc test { variant } { global gdb_test_file_name global testfile srcdir subdir srcfile srcfile2 binfile global mi_gdb_prompt async with_test_prefix "$variant" { gdb_exit if [mi_gdb_start] { continue } set options {debug} if {$variant == "mt" } { lappend options "pthreads" } # Don't use standard_testfile as we need a different binary # for each variant. set testfile $gdb_test_file_name-$variant set binfile [standard_output_file ${testfile}] set srcfile $testfile.c set srcfile2 $gdb_test_file_name.c if {[build_executable "failed to prepare" \ $testfile \ "${srcfile} ${srcfile2}" \ $options] == -1} { return -1 } mi_delete_breakpoints mi_gdb_reinitialize_dir $srcdir/$subdir mi_gdb_reinitialize_dir $srcdir/$subdir mi_gdb_load ${binfile} mi_runto test # Leave the breakpoint at 'test' set, on purpose. The next # resume shall emit a single '*running,thread-id="all"', even # if GDB needs to step over a breakpoint (that is, even if GDB # needs to run only one thread for a little bit). set bp_location [gdb_get_line_number "set breakpoint here" $srcfile2] set bp_location_end [gdb_get_line_number "set end breakpoint here" $srcfile2] mi_gdb_test "-break-insert -c return_false() $srcfile2:$bp_location" ".*" \ "insert conditional breakpoint" mi_gdb_test "-break-insert $srcfile2:$bp_location_end" ".*" \ "insert end breakpoint" set msg "no spurious *running notifications" send_gdb "-exec-continue\n" gdb_expect { -re "\\*running.*\\*running.*\\*stopped" { fail $msg } -re "\\^running\r\n\\*running,thread-id=\"all\"\r\n${mi_gdb_prompt}.*\\*stopped" { pass $msg } timeout { fail "$msg (timeout)" } } # In sync mode, there's an extra prompt after *stopped. Consume it. if {!$async} { gdb_expect { -re "$mi_gdb_prompt" { } } } } } # Single-threaded. test "st" # Multi-threaded. test "mt"