Extending the core language via a gcc plugin possible?

U.Mutlu um@mutluit.com
Mon Jun 18 00:08:00 GMT 2018

is it possible to add a private extension to the
core language (C/C++) by writing a gcc plugin?

The extension in mind is something like this

Later I want this be possible also inside statement headers, for example
for ([double d = 1.0; bool f = false;] size_t i = 0; i < vec.size(); ++i)

The scope of the so-defined variables shall be the same scope they are in,
ie. in the for-loop case just the scope of the for-loop itself, much like the 
case with i.

Any way?

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