[Bug 72273] GLSL preprocessor does not support expressions in #line

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=72273

--- Comment #1 from Carl Worth <cworth at cworth.org> ---
(In reply to comment #0)
>     "#line must have, after macro substitution, one of the following forms
...
>     where line and source-string-number are constant integer *expressions*."

OK. This should be really easy to fix, (basically just replace
"integer_constant"
with "expression" in the grammar and then do a bunch of testing).

I notice that the only other place that "integer_constant" appears in the
current grammar is for #version. Should we be allowing expressions there
as well or does the specification demand a numeric literal for that one?

-Carl

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