Re: Support for "break *ADDRESS thread THREADNO"

[Daniel Jacobowitz <drow@false.org>]

On Wed, Apr 13, 2005 at 08:32:04PM +0300, Eli Zaretskii wrote:
> > Date: Wed, 13 Apr 2005 11:35:29 +0100 (BST)
> > From: "Maciej W. Rozycki" <macro@mips.com>
> > cc: Eli Zaretskii <eliz@gnu.org>, gdb-patches@sources.redhat.com, 
> >     "Maciej W. Rozycki" <macro@linux-mips.org>
> > 
> >  I think the actual problem is the expression parser cannot be told to 
> > stop successfully on an unparseable token as long as the expression 
> > collected so far is valid and let the caller deal with that.
> 
> We could detect and remove the "thread NUMBER" part from the string we
> pass to the parser, couldn't we?

I have the feeling this is going to be pretty tricky to get right.  For
instance, it can come before or after the "if" clause.  (Well, I
thought it could; the manual only says before.)  So if it comes before
then you have a line like:

  break *EXPRESSION thread 5 if EXPRESSION

Suppose one of those expressions includes:
  strcmp ("thread 5", my_thread_name)

Picking out the thread number would require at least lexing, and
possibly parsing.

-- 
Daniel Jacobowitz
CodeSourcery, LLC