--- /dev/null
+/* This testcase is part of GDB, the GNU debugger.
+
+ Copyright 2018 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/>. */
+
+#include <unistd.h>
+#include <stdlib.h>
+
+static void
+breakpt ()
+{
+ asm ("" ::: "memory");
+}
+
+static void
+go_child ()
+{
+ breakpt ();
+
+ while (1)
+ sleep (1);
+}
+
+static void
+go_parent ()
+{
+ breakpt ();
+
+ while (1)
+ sleep (1);
+}
+
+int
+main ()
+{
+ pid_t pid;
+
+ pid = fork ();
+ if (pid == -1)
+ abort ();
+
+ if (pid == 0)
+ go_child ();
+ else
+ go_parent ();
+
+ exit (EXIT_SUCCESS);
+}
--- /dev/null
+# Copyright 2018 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 is about restarting execution of a forked application when
+# using gdb extended remote target.
+#
+# There are two issues that the test tries to expose in GDB:
+#
+# 1. GDB would throw an assertion upon reconnecting to a remote target
+# if there was more than one inferior already active in GDB, and
+#
+# 2. GDB would not prune transient inferiors from the inferior list
+# when reconnecting to a remote target. So, for example, an inferior
+# created by GDB to track the child of a fork would usually be removed
+# from the inferior list once the child exited. However, reconnecting
+# to a remote target would result in the child inferior remaining in
+# the inferior list.
+
+# This test is only for extended remote targets.
+if {[target_info gdb_protocol] != "extended-remote"} {
+ continue
+}
+
+# This test also makes use of 'detach-on-fork' which is not supported
+# on all platforms.
+if { ![istarget "*-*-linux*"] && ![istarget "*-*-openbsd*"] } then {
+ continue
+}
+
+# And we need to be able to reconnect to gdbserver.
+set gdbserver_reconnect_p 1
+if { [info proc gdb_reconnect] == "" } {
+ return 0
+}
+
+standard_testfile
+
+if {[prepare_for_testing "failed to prepare" $testfile $srcfile debug]} {
+ return -1
+}
+
+# Core of the test. DO_KILL_P controls whether we kill one of the
+# inferiors before reconnecting. And FOLLOW_CHILD_P controls whether
+# we follow the child or the parent at the fork.
+proc test_reload { do_kill_p follow_child_p } {
+ global decimal
+ global binfile
+
+ clean_restart ${binfile}
+
+ if ![runto_main] then {
+ fail "can't run to main"
+ return 0
+ }
+
+ # Set detach-on-fork off
+ gdb_test_no_output "set detach-on-fork off"
+
+ set live_inf_ptn "process $decimal"
+ set dead_inf_ptn "<null>"
+
+ if ${follow_child_p} {
+ gdb_test_no_output "set follow-fork child"
+ set parent_prefix " "
+ set child_prefix "\\*"
+ set parent_inf_after_kill_ptn ${live_inf_ptn}
+ set child_inf_after_kill_ptn ${dead_inf_ptn}
+ } else {
+ gdb_test_no_output "set follow-fork parent"
+ set parent_prefix "\\*"
+ set child_prefix " "
+ set parent_inf_after_kill_ptn ${dead_inf_ptn}
+ set child_inf_after_kill_ptn ${live_inf_ptn}
+ }
+
+ gdb_breakpoint "breakpt"
+ gdb_continue_to_breakpoint "breakpt"
+
+ # Check we have the expected inferiors.
+ gdb_test "info inferiors" \
+ [multi_line \
+ " Num Description Executable.*" \
+ "${parent_prefix} 1 +${live_inf_ptn} \[^\r\n\]+" \
+ "${child_prefix} 2 +${live_inf_ptn} \[^\r\n\]+" ] \
+ "Check inferiors at breakpoint"
+
+ if { $do_kill_p } {
+ # (Optional) Kill one of the inferiors.
+ gdb_test "kill" \
+ "" \
+ "Kill inferior" \
+ "Kill the program being debugged.*y or n. $" \
+ "y"
+
+ # Check the first inferior really did die.
+ gdb_test "info inferiors" \
+ [multi_line \
+ " Num Description Executable.*" \
+ "${parent_prefix} 1 +${parent_inf_after_kill_ptn} \[^\r\n\]+" \
+ "${child_prefix} 2 +${child_inf_after_kill_ptn} \[^\r\n\]+" ] \
+ "Check inferior was killed"
+ }
+
+ # Reconnect to the target.
+ if { [gdb_reconnect] == 0 } {
+ pass "reconnect after fork"
+ } else {
+ fail "reconnect after fork"
+ }
+}
+
+# Run all combinations of the test.
+foreach do_kill_p [list 1 0] {
+ foreach follow_child_p [list 1 0] {
+ with_test_prefix \
+ "kill: ${do_kill_p}, follow-child ${follow_child_p}" {
+ test_reload ${do_kill_p} ${follow_child_p}
+ }
+ }
+}
projects / binutils-gdb.git / commitdiff