[rfa/testsuite] gdb.mi/mi-pthreads.exp, gdb.mi/mi1-pthreads.exp: work with stripped libc

[Michael Elizabeth Chastain <mec at shout dot net>]

This patch fixes several FAILs in gdb.mi/pthreads.exp and gdb.mi/pthreads.exp.
Reference:

  http://sources.redhat.com/ml/gdb/2003-01/msg00001.html
  http://sources.redhat.com/ml/gdb/2003-01/msg00012.html
  http://sources.redhat.com/ml/gdb/2003-01/msg00020.html

The FAILS are:

  gdb.mi/mi-pthreads.exp: check_mi_thread_command_set: -thread-select 2
  gdb.mi/mi-pthreads.exp: check_mi_thread_command_set: -thread-select 3
  gdb.mi/mi-pthreads.exp: check_mi_thread_command_set: -thread-select 4
  gdb.mi/mi-pthreads.exp: check_mi_thread_command_set: -thread-select 5
  gdb.mi/mi-pthreads.exp: check_mi_thread_command_set: -thread-select 6
  gdb.mi/mi-pthreads.exp: check_mi_thread_command_set: -thread-select 7
  gdb.mi/mi1-pthreads.exp: check_mi_thread_command_set: -thread-select 2
  gdb.mi/mi1-pthreads.exp: check_mi_thread_command_set: -thread-select 3
  gdb.mi/mi1-pthreads.exp: check_mi_thread_command_set: -thread-select 4
  gdb.mi/mi1-pthreads.exp: check_mi_thread_command_set: -thread-select 5
  gdb.mi/mi1-pthreads.exp: check_mi_thread_command_set: -thread-select 6
  gdb.mi/mi1-pthreads.exp: check_mi_thread_command_set: -thread-select 7

The test script selects a new thread and checks the output from gdb.
The test expects to see attributes of 'new-thread-id', 'frame',
'line', and 'file'.

Many of the threads are blocked in libc calls, and many people, such as
me, have libc's with no symbols.  So I'm not getting 'line' and 'file'.
I suspect that other people have home-built libc's or glibc's with
symbols in them and that's why these tests would pass for them.

This patch makes 'line' and 'file' optional.  'new-thread-id' and 'frame'
are still mandatory to PASS.

Testing: my usual testbed:

  target = native, host = i686-pc-linux-gnu, osversion = red-hat-8.0,
  gdb = HEAD%20021231, gcc => several v2 and v3, binutils => several,
  libc = vendor, gformat => dwarf-2, stabs+

With this patch, all tests in these two scripts PASS.

OK to commit?

Michael C

===

2003-01-03  Michael Chastain  <mec@shout.net>

	* gdb.mi/mi-pthreads.exp (check_mi_thread_command_set):
	When selecting a thread, 'line' and 'file' are optional.
	* gdb.mi/mi1-pthreads.exp: Likewise.

===

Index: mi-pthreads.exp
===================================================================
RCS file: /cvs/src/src/gdb/testsuite/gdb.mi/mi-pthreads.exp,v
retrieving revision 1.3
diff -u -r1.3 mi-pthreads.exp
--- mi-pthreads.exp	25 Sep 2002 16:08:43 -0000	1.3
+++ mi-pthreads.exp	4 Jan 2003 05:26:19 -0000
@@ -1,4 +1,4 @@
-# Copyright 2002 Free Software Foundation, Inc.
+# Copyright 2002, 2003 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
@@ -191,8 +191,11 @@
     "check_mi_thread_command_set: -thread-select 123456789"
 
   foreach thread $thread_list {
+    # line and file are optional.
+    # many of the threads are blocked in libc calls,
+    # and many people have libc's with no symbols.
     mi_gdb_test "-thread-select $thread" \
-      "\\^done,new-thread-id=\"$thread\",frame={.*},line=\"(-)?\[0-9\]+\",file=\".*\"" \
+      "\\^done,new-thread-id=\"$thread\",frame={.*}(,line=\"(-)?\[0-9\]+\",file=\".*\")?" \
       "check_mi_thread_command_set: -thread-select $thread"
   }
 }
Index: mi1-pthreads.exp
===================================================================
RCS file: /cvs/src/src/gdb/testsuite/gdb.mi/mi1-pthreads.exp,v
retrieving revision 1.1
diff -u -r1.1 mi1-pthreads.exp
--- mi1-pthreads.exp	1 Oct 2002 16:01:37 -0000	1.1
+++ mi1-pthreads.exp	4 Jan 2003 05:26:19 -0000
@@ -1,4 +1,4 @@
-# Copyright 2002 Free Software Foundation, Inc.
+# Copyright 2002, 2003 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
@@ -191,8 +191,11 @@
     "check_mi_thread_command_set: -thread-select 123456789"
 
   foreach thread $thread_list {
+    # line and file are optional.
+    # many of the threads are blocked in libc calls,
+    # and many people have libc's with no symbols.
     mi_gdb_test "-thread-select $thread" \
-      "\\^done,new-thread-id=\"$thread\",frame={.*},line=\"(-)?\[0-9\]+\",file=\".*\"" \
+      "\\^done,new-thread-id=\"$thread\",frame={.*}(,line=\"(-)?\[0-9\]+\",file=\".*\")?" \
       "check_mi_thread_command_set: -thread-select $thread"
   }
 }