On Mon, 28 Nov 2011 18:15:27 -0700, Brian Paul <[email protected]> wrote: > This can be used to check that tables have the right number of entries, > etc. at compile-time. This will hopefully catch things that are missed > if particular drivers aren't tested, for example.
I've always wanted to go dig up one of these and start using it. Thanks!
> ---
> src/mesa/main/compiler.h | 11 +++++++++++
> 1 files changed, 11 insertions(+), 0 deletions(-)
>
> diff --git a/src/mesa/main/compiler.h b/src/mesa/main/compiler.h
> index 921e302..96e24e4 100644
> --- a/src/mesa/main/compiler.h
> +++ b/src/mesa/main/compiler.h
> @@ -310,6 +310,17 @@ static INLINE GLuint CPU_TO_LE32(GLuint x)
> #endif
> #endif
>
> +
> +/**
> + * Static (compile-time) assertion.
> + * Basically, use COND to dimension an array. If COND is false/zero the
> + * array size will be -1 and we'll get a compilation error.
> + */
> +#define JOIN(x, y) x##y
> +#define STATIC_ASSERT_LINE(COND, LINE) do { typedef int
> JOIN(static_assertion_failed_at_line_,LINE)[(!!(COND))*2-1]; } while (0)
> +#define STATIC_ASSERT(COND) STATIC_ASSERT_LINE(COND, __LINE__)
Looks like STATIC_ASSERT_LINE could get linewrapped, right?
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