[RFC]: Add test for verifying the fix to the SEGV error when printing F77 array element

[Wu Zhou <woodzltc@cn.ibm.com>]

Daniel and all,

This is the testcase associated with the following patch:

   http://sources.redhat.com/ml/gdb-patches/2005-06/msg00090.html	

Without the patch above, the last three tests fail. With the patch, all
tests pass.  It is tested on ppc64 with g77-3.3.3 and g77-3.4.3.

It is my first attempt to add a new testcase into GDB testsuite. So if 
there is any errors or missings, please feel free to tell me. Thanks a 
lot!

2005-06-10  Wu Zhou  <woodzltc@cn.ibm.com>

	* gdb.fortran/array_element.f: New file.
	* gdb.fortran/array_element.exp: New testcase.

array_element.f
======================================
        dimension a(10)
        write(*,*)'This is a test.'
        call sub(a,10)
        write(*,*) a
        stop
        end

        subroutine sub(a,n)
        dimension a(n)
        do 100 i=1, n 
          a(i)=i
100     continue
        return
        end

array_element.exp
=====================================
# Copyright 2005 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 2 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, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  

# This file is part of the gdb testsuite.

if $tracelevel then {
	strace $tracelevel
}

#
# test running programs
#
set prms_id 0
set bug_id 0

set testfile "array_element"
set srcfile ${testfile}.f
set binfile ${objdir}/${subdir}/${testfile}

if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug f77}] != "" } {
    gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
}

if [get_compiler_info ${binfile} "f77"] {
    return -1
}

gdb_exit
gdb_start
gdb_reinitialize_dir $srcdir/$subdir
gdb_load ${binfile}

if ![runto sub_] then {
    perror "couldn't run to breakpoint"
    continue
}

set bp_location [gdb_get_line_number "continue"]
gdb_test "break $bp_location" \
    "Breakpoint.*at.* file .*$srcfile, line $bp_location\\." \
    "brealpoint at continue"

gdb_test "continue" \
    "Continuing\\..*Breakpoint.*" \
    "continue to breakpoint"
gdb_test "print a(1)" "= 1.*" "print the first element of array a"

gdb_test "continue" \
    "Continuing\\..*Breakpoint.*" \
    "continue to breakpoint once again"
gdb_test "print a(2)" "= 2.*" "print the first element of array a"


gdb_exit
return 0


Cheers
- Wu Zhou