[RFA/testsuite] check bt problem after 2 steps is gone

[Joel Brobecker <brobecker@adacore.com>]

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Hello,

This is a new testcase that checks that the issue reported in:

        http://sources.redhat.com/ml/gdb-patches/2006-04/msg00367.html

will not regress again.

2006-04-28  Joel Brobecker  <brobecker@adacore.com>

        * gdb.base/step-bt.c: New file.
        * gdb.base/step-bt.exp: New testcase.

Tested on i686-pc-cygwin. on XFAIL on the last test with the current
sources, all PASSes once the patch in the message mentioned above is
applied.

OK to apply?

Thanks,
-- 
Joel

[-- Attachment #2: step-bt.c --]
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/* This testcase is part of GDB, the GNU debugger.

   Copyright 2006 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.

   Please email any bugs, comments, and/or additions to this file to:
   bug-gdb@prep.ai.mit.edu  */

#include <stdio.h>

void
hello (void)
{
  printf ("Hello world.\n");
}

int
main (void)
{
  hello ();

  return 0;
}

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# Copyright 2006 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.  

# The intent of this testcase it to verify that various aliases and
# shortcuts of the "delete" command never stop working.

if $tracelevel then {
    strace $tracelevel
}

set prms_id 0
set bug_id 0

set testfile step-bt
set srcfile ${testfile}.c
set binfile ${objdir}/${subdir}/${testfile}
if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
    untested "Couldn't compile test program"
    return -1
}

# Get things started.

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

gdb_test "break *hello" \
         "Breakpoint.*at.* file .*$srcfile, line .*" \
         "breakpoint at first instruction of hello()"

gdb_run_cmd
gdb_expect {
    -re ".*Breakpoint.* hello .* at .*$srcfile:.*$gdb_prompt $"  {
	pass "run to hello()"
    }
    -re ".*$gdb_prompt $" {
	fail "run to hello()"
	return -1
    }
    timeout {
        fail "run to hello() (timeout)"
        return -1
    }
}

gdb_test "stepi 2" \
         "" \
         "step 2 instructions"

gdb_test "bt" \
         "#0 +0x\[0-9a-z\]+ in hello .*#1 +0x\[0-9a-z\]* in main.*" \
         "backtrace after two instruction steps"