Re: Does Anyone Compile Aspell with -DNDEBUG?

Kevin Atkinson wrote:
> On Sun, 1 Jun 2008, Peter Kümmel wrote:
> 
>> Kevin Atkinson wrote:
>>> On Sun, 1 Jun 2008, Peter Kümmel wrote:
>>>
>>>> Kevin Atkinson wrote:
>>>>>
>>>>> If so stop.  Most asserts perform important safety checks and 
>>>>> disabling them could lead to data corruption and other nasty 
>>>>> things.  Also, they should have a negligible effect on performance.
>>>>
>>>> I'm not sure if this is correct, STL checks could be expensive even 
>>>> when
>>>> optimizing the code.
>>>
>>> Can you please show me proof of this.
>>
>> It is just a impression because I've never heard about such a strategy to
>> ensure correctness. I only know, in debug mode msvc-stl-code is several
>> times slower than in release mode, due to disabling optimizations and
>> executing additional checks.
>> But a proof would only be a aspell benchmark which I don't have.

I've tried to benchmark with lyx and msvc, but it is not possible with msvc
(which means nothing in a gnu project). There a different runtime libraries
for debug und release which must not be mixed, but using _DEBUG enforces
linking against both runtime libraries.
But I assume gcc doesn't have such limitations.

It will be no technical problem to use NDEBUG for msvc only in the cmake files.

> 
> Debug mode should be the same thing as compiling without defining NDEBUG.

Is _DEBUG defined if gcc is used?