On 01/13/2016 11:55 AM, Bubke Marco wrote:
Hello

With the clang code model there is a problem to generate a preamble file with 
header guards. Imaging a preamble file is like a automatically pre compiled 
header for the include block at the top. But there are limitations. One is that 
every ifndef has to match is #endif inside of the preamble but this not the 
case for header guards.

#ifndef HEADER_GUARD
#define HEADER_GUARD
#include <QtGui> // this would be compiled in the preamble once

void foo()
{
    auto bahn = nullptr;
}


#endif

We don't generate a preamble for this case because the opening ifndefs is not 
matching the endif. In that case the clang model will be very slow!

So I propose we change our wizards to utilize #pragma once and use it for every 
new file. We can change header files where we need code completion on demand 
too.

Unless I'm misunderstanding the point, you seem to suggest that people change their (non-broken) projects to work around problems in Creator's code model. This cannot possibly be the solution, can it? The code model needs to support users' code, not the other way around.


Christian
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