[patch] testcase: PR 8210 corefiles threads #3

[Jan Kratochvil <jan.kratochvil@redhat.com>]

Hi,

the testcase originally submitted did not catch a failure in BFD resulting in
the output:

p/x thread0
$1 = 0xfff2210
p/x thread1
$2 = 0xf7fef4c0
info threads
  3 Thread 0xfff2210 (LWP 1)  warning: Couldn't find general-purpose registers in core file.
0x00000000 in ?? ()
  2 Thread 26859  0x0ff02698 in clone () from /lib/power6/libc.so.6
* 1 Thread 0xf7fef4c0 (LWP 26860)  0x0fe45e40 in raise () from /lib/power6/libc.so.6
(gdb) _

As both thread ids are present there in this case but apparently the output is
not correct.  (This output is from gdb-7.0.1-37.el5 on powerpc64-linux-gnu,
the testcase needs to be different there a bit).

The testcase now requires exactly two lines and only threads 1 and 2.


Thanks,
Jan


On Tue, 19 Apr 2011 22:43:52 +0200, Jan Kratochvil wrote:

the testcase originally submitted did not work with FSF GDB as it was based on
gcore which does not provide enough prstatus/prpsinfo info in the core files
and which are fixed by Denys Vlasenko's off-trunk patch:
	http://pkgs.fedoraproject.org/gitweb/?p=gdb.git;a=blob_plain;f=gdb-6.8-bz254229-gcore-prpsinfo.patch;hb=f15/master

Therefore this testcase uses native kernel core dumping instead.

No regressions on {x86_64,x86_64-m32,i686}-fedora15-linux-gnu.
And also on ppc64-m64, ppc64-m32, s390x, s390 and ia64 (some having a bfd/
dependency to be posted now).


On Sun, 30 Jan 2011 20:11:28 +0100, Jan Kratochvil wrote:

PR 8210 did not provide a new testcase, here it is.  I have limited the check
only to *-*-linux* as other targets seem to identify the thread differently
(untested outside of GNU/Linux).

I will check it in after a while, it seems safe to me.


gdb/testsuite/
2011-04-24  Jan Kratochvil  <jan.kratochvil@redhat.com>

	* gdb.threads/corethreads.c: New file.
	* gdb.threads/corethreads.exp: New file.

--- /dev/null
+++ b/gdb/testsuite/gdb.threads/corethreads.c
@@ -0,0 +1,47 @@
+/* Copyright 2011 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   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 <pthread.h>
+#include <stdlib.h>
+#include <assert.h>
+
+pthread_t thread0;
+pthread_t thread1;
+
+static void *
+start (void *arg)
+{
+  assert (pthread_self () == thread1);
+
+  abort ();
+}
+
+int
+main (void)
+{
+  int i;
+
+  thread0 = pthread_self ();
+
+  i = pthread_create (&thread1, NULL, start, NULL);
+  assert (i == 0);
+
+  i = pthread_join (thread1, NULL);
+  assert (i == 0);
+
+  return 0;
+}
--- /dev/null
+++ b/gdb/testsuite/gdb.threads/corethreads.exp
@@ -0,0 +1,58 @@
+# Copyright 2011 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/>.
+
+# Are we on a target board?  And non-Linux targets seem to identify the thread
+# differently.
+if {![isnative] || ![istarget "*-*-linux*"]} {
+    return
+}
+
+set testfile "corethreads"
+set srcfile ${testfile}.c
+set executable ${testfile}
+set binfile ${objdir}/${subdir}/${executable}
+if { [gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
+     untested ${testfile}.exp
+     return -1
+}
+
+set corefile [core_find $binfile]
+if {$corefile == ""} {
+    return 0
+}
+
+clean_restart $executable
+
+gdb_test "core-file $corefile" "Core was generated by .*" "load core"
+gdb_test "info files" "\r\nLocal core dump file:\r\n.*" "sanity check we see the core file"
+
+set test "print pthread_t of thread0"
+gdb_test_multiple "p/x thread0" $test {
+    -re " = (0x\[0-9a-f\]+)\r\n$gdb_prompt $" {
+	pass $test
+	set thread0 $expect_out(1,string)
+    }
+}
+set test "print pthread_t of thread1"
+gdb_test_multiple "p/x thread1" $test {
+    -re " = (0x\[0-9a-f\]+)\r\n$gdb_prompt $" {
+	pass $test
+	set thread1 $expect_out(1,string)
+    }
+}
+
+gdb_test "info threads" "\r\n *\[12\] +Thread $thread0 .*" "thread0 found"
+gdb_test "info threads" "\r\n *\\*? +\[12\] +Thread $thread1 .*" "thread1 found"
+gdb_test "info threads" "\r\n\[ \t\]*Id\[ \t\]+Target\[ \t\]+Id\[ \t\]+Frame\[ \t\]*\r\n\[^\r\n\]+\r\n\[^\r\n\]+" "no other thread found"