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Date: Fri, 24 Nov 2006 21:11:00 -0000
From: Martin Sebor <sebor@roguewave.com>
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To: Benjamin Kosnik <bkoz@redhat.com>
CC: Paul Pogonyshev <pogonyshev@gmx.net>, libstdc++@gcc.gnu.org,         gdb@sourceware.org
Subject: Re: setting breakpoints with C++ typedef names [was: Re: debug  information]
References: <200611191342.48724.pogonyshev@gmx.net> 	<20061121100701.6b980f48.bkoz@redhat.com> 	<200611212225.28377.pogonyshev@gmx.net> <20061122130341.a4436ce2.bkoz@redhat.com>
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Benjamin Kosnik wrote:
>>But still function names include full type name: `b 'bar(basic_pod<int>)''.
>>Not much of a problem in this case, but sometimes the full name is very
>>long...
> 
> 
> Oh. I finally understand you. Yes, this is a drag.
> 
> You want to be able to do:
> 
> (gdb) b bar(ipod)
> 
> instead of
> 
> (gdb) b bar(basic_pod<int>)

This is especially troublesome when the real type is private to
the implementation, as in, for example,

     void foo (std::map<T, U>::iterator);

In order for a user to set a breakpoint on foo they need to know
that the type of libstdc++'s map<T, U>::iterator is really called
     std::_Rb_tree_iterator<std::pair<const T, U> >
(and something completely different when using a different
implementation of the library).

I expect this use of private names to become even more pervasive
when (and if) typedef templates are implemented.

Martin