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Date: Mon, 21 Sep 2009 13:47:00 -0000
From: "jan dot kratochvil at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Message-ID: <20090921134703.10679.jan.kratochvil@redhat.com>
Reply-To: sourceware-bugzilla@sourceware.org
Subject: [Bug breakpoints/10679] New: replay mode should set can-use-hw-watchpoints 0
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gdb -nx -ex 'set confirm no' -ex start -ex record -ex c -ex reverse-continue -ex
'watch j' -ex c ./loopsimple
GNU gdb (GDB) 7.0.50.20090921-cvs
[...]
No more reverse-execution history.
main () at loopsimple.c:6
6	  for (i = 0; i < 1000; i++)
Hardware watchpoint 2: j

Watchpoint 2 deleted because the program has left the block in
which its expression is valid.
__libc_start_main (main=<value optimized out>, argc=<value optimized out>,
ubp_av=<value optimized out>, init=<value optimized out>, 
    fini=<value optimized out>, rtld_fini=<value optimized out>,
stack_end=0x7fffffffd5a8) at libc-start.c:252
252	  exit (result);
(gdb) _

But this way it works:

gdb -nx -ex 'set confirm no' -ex start -ex record -ex c -ex reverse-continue -ex
'set can-use-hw-watchpoints 0' -ex 'watch j' -ex c ./loopsimple
GNU gdb (GDB) 7.0.50.20090921-cvs
[...]
No more reverse-execution history.
main () at loopsimple.c:6
6	  for (i = 0; i < 1000; i++)
Watchpoint 2: j
Watchpoint 2: j

Old value = 0
New value = 1
main () at loopsimple.c:6
6	  for (i = 0; i < 1000; i++)
(gdb) 

------------------------------------------------------------------------------

int
main (void)
{
  int i, j;

  for (i = 0; i < 1000; i++)
    j = i;

  return 0;
}

-- 
           Summary: replay mode should set can-use-hw-watchpoints 0
           Product: gdb
           Version: unknown
            Status: UNCONFIRMED
          Severity: minor
          Priority: P2
         Component: breakpoints
        AssignedTo: unassigned at sourceware dot org
        ReportedBy: jan dot kratochvil at redhat dot com
                CC: gdb-prs at sourceware dot org,teawater at gmail dot com


http://sourceware.org/bugzilla/show_bug.cgi?id=10679

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