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[PATCH] Add test for following fork on position-independent executables
- From: Simon Marchi <simon dot marchi at ericsson dot com>
- To: <gdb-patches at sourceware dot org>
- Cc: Simon Marchi <simon dot marchi at ericsson dot com>
- Date: Wed, 11 Apr 2018 11:28:43 -0400
- Subject: [PATCH] Add test for following fork on position-independent executables
- Spamdiagnosticmetadata: NSPM
- Spamdiagnosticoutput: 1:99
Commit
b2e586e ("Defer breakpoint reset when cloning progspace for fork
child")
fixed following fork childs when the executable is position-independent.
This patch adds a little test for it.
gdb/testsuite/ChangeLog:
* gdb.base/pie-fork.c: New file.
* gdb.base/pie-fork.exp: New file.
---
gdb/testsuite/gdb.base/pie-fork.c | 34 ++++++++++++++++++
gdb/testsuite/gdb.base/pie-fork.exp | 69 +++++++++++++++++++++++++++++++++++++
2 files changed, 103 insertions(+)
create mode 100644 gdb/testsuite/gdb.base/pie-fork.c
create mode 100644 gdb/testsuite/gdb.base/pie-fork.exp
diff --git a/gdb/testsuite/gdb.base/pie-fork.c b/gdb/testsuite/gdb.base/pie-fork.c
new file mode 100644
index 0000000..a613228
--- /dev/null
+++ b/gdb/testsuite/gdb.base/pie-fork.c
@@ -0,0 +1,34 @@
+/* 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>
+
+static void
+break_here ()
+{
+ int i;
+ for (i = 0; i < 30; i++)
+ sleep (1);
+}
+
+int
+main ()
+{
+ fork ();
+ break_here();
+ return 0;
+}
diff --git a/gdb/testsuite/gdb.base/pie-fork.exp b/gdb/testsuite/gdb.base/pie-fork.exp
new file mode 100644
index 0000000..e58c960
--- /dev/null
+++ b/gdb/testsuite/gdb.base/pie-fork.exp
@@ -0,0 +1,69 @@
+# 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/>.
+
+# Test that we can follow forks properly when the executable is
+# position-independent.
+
+standard_testfile
+
+set opts [list debug additional_flags=-fPIE ldflags=-pie]
+
+if [prepare_for_testing "failed to prepare" $testfile $srcfile $opts] {
+ return
+}
+
+if [use_gdb_stub] {
+ return
+}
+
+proc setup_test {detach_on_fork {follow_fork_mode "parent"}} {
+ global binfile
+
+ clean_restart ${binfile}
+
+ if ![runto_main] {
+ fail "can't run to main"
+ return
+ }
+
+ gdb_test_no_output "set detach-on-fork ${detach_on_fork}"
+ gdb_test_no_output "set follow-fork-mode ${follow_fork_mode}"
+
+ gdb_breakpoint "break_here"
+}
+
+proc_with_prefix test_detach_on_fork_follow_parent {} {
+ setup_test "on" "parent"
+
+ gdb_test "continue" "\r\nBreakpoint 2, break_here.*"
+}
+
+proc_with_prefix test_detach_on_fork_follow_child {} {
+ setup_test "on" "child"
+
+ gdb_test "continue" "\r\nThread 2.1 .* hit Breakpoint 2, break_here.*"
+}
+
+proc_with_prefix test_no_detach_on_fork {} {
+ setup_test "off"
+
+ gdb_test "continue" "\r\nThread 1.1 .* hit Breakpoint 2, break_here.*"
+ gdb_test "thread 2.1"
+ gdb_test "continue" "\r\nThread 2.1 .* hit Breakpoint 2, break_here.*"
+}
+
+test_detach_on_fork_follow_parent
+test_detach_on_fork_follow_child
+test_no_detach_on_fork
--
2.7.4