Re: [fortran PATCH] Reduce NON_LVALUE_EXPR usage in array indices

[Tobias Schlüter <tobias dot schlueter at physik dot uni-muenchen dot de>]

roger@eyesopen.com wrote on Mon, 18 Dec 2006:
> As shown in my post of just a few minutes ago, gfortran has a habit of
> producing initial statement trees that look like:
>
>       (*a)[NON_LVALUE_EXPR <S.0> + -1] = 0;
>
> whilst prefectly valid, the NON_LVALUE_EXPR tends to make debugging fortran
> array dependencies slightly harder than they need to be.  The source of these
> nodes is fold, which when simplifying 1*x and x+0 uses this annotation to
> assist the C/C++ front-ends from thinking that the returned "x" is a
> potential lvalue.

Sounds like the C/C++ frontends should be fixed instead :) As long as  
these kind of things don't proliferate, we can live with it, though.

- Tobi

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