Re: [Tinycc-devel] X(X(1)) (nested macro substitution)

[u-tcc-uepj]

On Fri, Apr 29, 2016 at 10:18:34AM +0100, Edmund Grimley Evans wrote:
> You may find that TCC's preprocessor is fundamentally broken (wrong
> underlying data structures) and can't be patched up. If you are going
> to play around with small changes to it, then you should first find a
> proper, big test suite. There must be one out there somewhere, perhaps
> in GCC's source tree, for example. Otherwise you might find that every
> change you make to fix one thing breaks other things.
> 
> Another possibility would be to give up on making TCC's preprocessor
> conform to the standard. If it correctly implements a well-defined
> subset of the standard, and fails with a clear error (apology) in
> other cases, then that might be more acceptable than generating
> different output from a correct compiler or going into an infinite
> loop in certain situations that are hard to describe or identify.

+1

Rune