Re: STL debug mode

[Phil Edwards <phil at jaj dot com>]

On Thu, Apr 18, 2002 at 11:00:02AM +0200, Peter Nordlund L (ERA) wrote:
> Hi all,
> 
> I wonder if there is a debug mode a la STLPort
> http://www.stlport.org/doc/debug_mode.html
> 
> available for libstdc++? 

Not at runtime, not like STLport, anyway.  Take a look at

    http://gcc.gnu.org/onlinedocs/libstdc++/configopts.html

Two that might interest you are --enable-debug and --enable-concept-checks.
The first builds the library with maximal debug information and minimum
optimizations.  The second performs compile-time (not runtime) checks of
your STL template instantiations, which often notices the same bugs that
STLport's debug mode notices, but earlier.


> If this feature is not available, is there any interest in implementing it?

A massively-slow, massively-safe runtime is something I wouldn't mind
providing, but nobody's come up with a good method of implementing it yet.
We prefer to do as many checks as we can during compilation; that way we can
have them on all the time without penalizing your generated program speed.


Phil

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