[Mesa-dev] [PATCH 1/7] glcpp: Add support for __LINE__ and __FILE__ macros

[Carl Worth]

Matt Turner <mattst88 at gmail.com> writes:
> #line __LINE__
> __LINE__
> #line __LINE__
> __LINE__
>
> when run through glcpp emits this:
>
> #line 1
> 1
> #line 2
> 2

That looks absolutely correct to me, (if very strange to ever do "#line
__LINE__"). For example, this matches the behavior of "gcc -E -" on the
same example.

For "normal" uses of #line, this is what you want. The #line directive
specifies what line number the compiler should use for the subsequent
line of code, (which is useful for getting error messages that point to
the original source when the compiler is actually chewing on some
generated code derived from that source).

-Carl

-- 
carl.d.worth at intel.com
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