| # Copyright (C) 2015-2021 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/>. |
| |
| # This test verifies that threads created by the child fork are |
| # properly handled. Specifically, GDB used to have a bug where it |
| # would leave child fork threads stuck stopped, even though "info |
| # threads" would show them running. |
| # |
| # See https://sourceware.org/bugzilla/show_bug.cgi?id=18600 |
| |
| # In remote mode, we cannot continue debugging after all |
| # inferiors have terminated, and this test requires that. |
| if { [target_info exists gdb_protocol] |
| && [target_info gdb_protocol] == "remote" } { |
| continue |
| } |
| |
| standard_testfile |
| |
| proc do_test { detach-on-fork } { |
| global GDBFLAGS |
| global srcfile testfile |
| global gdb_prompt |
| |
| set saved_gdbflags $GDBFLAGS |
| set GDBFLAGS [concat $GDBFLAGS " -ex \"set non-stop on\""] |
| |
| if {[prepare_for_testing "failed to prepare" \ |
| $testfile $srcfile {debug pthreads}] == -1} { |
| set GDBFLAGS $saved_gdbflags |
| return -1 |
| } |
| |
| set GDBFLAGS $saved_gdbflags |
| |
| if ![runto_main] then { |
| return 0 |
| } |
| |
| gdb_test_no_output "set detach-on-fork ${detach-on-fork}" |
| set test "continue &" |
| gdb_test_multiple $test $test { |
| -re "$gdb_prompt " { |
| pass $test |
| } |
| } |
| |
| # gdbserver had a bug that resulted in reporting the fork child's |
| # initial stop to gdb, which gdb does not expect, in turn |
| # resulting in a broken session, like: |
| # |
| # [Thread 31536.31536] #16 stopped. <== BAD |
| # [New Thread 31547.31547] |
| # [Inferior 10 (process 31536) exited normally] |
| # [New Thread 31547.31560] |
| # |
| # [Thread 31547.31547] #18 stopped. <== BAD |
| # Cannot remove breakpoints because program is no longer writable. <== BAD |
| # Further execution is probably impossible. <== BAD |
| # [Inferior 11 (process 31547) exited normally] |
| # [Inferior 1 (process 31454) exited normally] |
| # |
| # These variables track whether we see such broken behavior. |
| set saw_cannot_remove_breakpoints 0 |
| set saw_thread_stopped 0 |
| |
| set test "inferior 1 exited" |
| gdb_test_multiple "" $test { |
| -re "Cannot remove breakpoints" { |
| set saw_cannot_remove_breakpoints 1 |
| exp_continue |
| } |
| -re "Thread \[^\r\n\]+ stopped\\." { |
| set saw_thread_stopped 1 |
| exp_continue |
| } |
| -re "(Thread|LWP) \[^\r\n\]+ exited" { |
| # Avoid timeout with check-read1 |
| exp_continue |
| } |
| -re "New (Thread|LWP) \[^\r\n\]+" { |
| # Avoid timeout with check-read1 |
| exp_continue |
| } |
| -re "Inferior 1 \(\[^\r\n\]+\) exited normally" { |
| pass $test |
| } |
| } |
| |
| gdb_assert !$saw_cannot_remove_breakpoints \ |
| "no failure to remove breakpoints" |
| gdb_assert !$saw_thread_stopped \ |
| "no spurious thread stop" |
| |
| gdb_test "info threads" "No threads\." \ |
| "no threads left" |
| |
| gdb_test "info inferiors" \ |
| "Num\[ \t\]+Description\[ \t\]+Connection\[ \t\]+Executable\[ \t\]+\r\n\\* 1 \[^\r\n\]+" \ |
| "only inferior 1 left" |
| } |
| |
| foreach_with_prefix detach-on-fork {"on" "off"} { |
| do_test ${detach-on-fork} |
| } |