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authorJan Kratochvil <jan.kratochvil@redhat.com>2009-06-29 18:53:55 +0000
committerJan Kratochvil <jan.kratochvil@redhat.com>2009-06-29 18:53:55 +0000
commit00c7eacff49a44712c7dc0f2e4bc9c0867d29493 (patch)
tree8a7070d493be99d7418910f20919e750dd22e5f3 /gdb/testsuite
parent173853dc66b58323cfb6a504fab77f7fb8f73c92 (diff)
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gdb/testsuite/
* gdb.threads/current-lwp-dead.exp, gdb.threads/current-lwp-dead.c: New.
Diffstat (limited to 'gdb/testsuite')
-rw-r--r--gdb/testsuite/ChangeLog4
-rw-r--r--gdb/testsuite/gdb.threads/current-lwp-dead.c75
-rw-r--r--gdb/testsuite/gdb.threads/current-lwp-dead.exp31
3 files changed, 110 insertions, 0 deletions
diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index cbbce9f..4732ed2 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2009-06-29 Jan Kratochvil <jan.kratochvil@redhat.com>
+
+ * gdb.threads/current-lwp-dead.exp, gdb.threads/current-lwp-dead.c: New.
+
2009-06-29 Tom Tromey <tromey@redhat.com>
* dg-extract-results.sh: New file.
diff --git a/gdb/testsuite/gdb.threads/current-lwp-dead.c b/gdb/testsuite/gdb.threads/current-lwp-dead.c
new file mode 100644
index 0000000..11ca35b
--- /dev/null
+++ b/gdb/testsuite/gdb.threads/current-lwp-dead.c
@@ -0,0 +1,75 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+ Copyright 2009 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/>.
+
+ Do not use threads as we need to exploit a bug in LWP code masked by the
+ threads code otherwise.
+
+ INFERIOR_PTID must point to exited LWP. Here we use the initial LWP as it
+ is automatically INFERIOR_PTID for GDB.
+
+ Finally we need to call target_resume (RESUME_ALL, ...) which we invoke by
+ NEW_THREAD_EVENT (called from the new LWP as initial LWP is exited now). */
+
+#define _GNU_SOURCE
+#include <sched.h>
+#include <assert.h>
+#include <unistd.h>
+#include <stdlib.h>
+
+#define STACK_SIZE 0x1000
+
+static int
+fn_return (void *unused)
+{
+ return 0; /* at-fn_return */
+}
+
+static int
+fn (void *unused)
+{
+ int i;
+ unsigned char *stack;
+ int new_pid;
+
+ i = sleep (1);
+ assert (i == 0);
+
+ stack = malloc (STACK_SIZE);
+ assert (stack != NULL);
+
+ new_pid = clone (fn_return, stack + STACK_SIZE, CLONE_FILES | CLONE_VM, NULL,
+ NULL, NULL, NULL);
+ assert (new_pid > 0);
+
+ return 0;
+}
+
+int
+main (int argc, char **argv)
+{
+ unsigned char *stack;
+ int new_pid;
+
+ stack = malloc (STACK_SIZE);
+ assert (stack != NULL);
+
+ new_pid = clone (fn, stack + STACK_SIZE, CLONE_FILES | CLONE_VM, NULL, NULL,
+ NULL, NULL);
+ assert (new_pid > 0);
+
+ return 0;
+}
diff --git a/gdb/testsuite/gdb.threads/current-lwp-dead.exp b/gdb/testsuite/gdb.threads/current-lwp-dead.exp
new file mode 100644
index 0000000..bb175cd
--- /dev/null
+++ b/gdb/testsuite/gdb.threads/current-lwp-dead.exp
@@ -0,0 +1,31 @@
+# This testcase is part of GDB, the GNU debugger.
+
+# Copyright 2009 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/>.
+
+# Please email any bugs, comments, and/or additions to this file to:
+# bug-gdb@gnu.org
+
+if { [prepare_for_testing current-lwp-dead.exp current-lwp-dead] } {
+ return -1
+}
+
+if {[runto_main] <= 0} {
+ untested current-lwp-dead.exp
+ return -1
+}
+
+gdb_breakpoint "fn_return"
+gdb_continue_to_breakpoint "fn_return" ".*at-fn_return.*"