More Clang diagnostic

[Bruno Medeiros]

On 26/10/2010 04:32, Walter Bright wrote:
> bearophile wrote:
>> The C# compiler too show those column number. But last time Walter has
>> explained that to do this, the compiler has to keep more data (all
>> those line
>> numbers), so this may slow down the compilation a little. And of course
>> currently this information is not present, so it probably requires a good
>> amount of changes to be implemented. The slowdown problem may be
>> solved as in
>> GCC, adding a compilation switch that gives/removes the column number (it
>> uses to be switched off on default, now after the competition by Clang
>> it's
>> switched on on default).
>
> Switching it off will have no effect on compile speed.
>

Why is that? What would cause a loss in compile speed even if this 
option was turned off?

-- 
Bruno Medeiros - Software Engineer