Passing static arrays to C

[Alex Rønne Petersen]

On 24-10-2012 12:00, Era Scarecrow wrote:
> On Wednesday, 24 October 2012 at 09:16:30 UTC, Walter Bright wrote:
>> C accepts static arrays as pointers, so T[n] in D would be C
>> prototyped as T*.
>>
>> Pass a pointer to the first element.
>
>   In GCC (or any c compiler) isn't it possible in optimizing to copy the
> static array to the stack (say 8 bytes or less as a guess)? Course this
> assumes the static size is set as part of the function signature too...
>
>   It makes sense for it to work both ways (in their own way); But then
> more bugs can lie in wait as well.

Passing static arrays by reference to the first element is part of the 
calling convention/ABI. If the C compiler generated code that doesn't 
work this way, the C compiler has a bug.

-- 
Alex Rønne Petersen
alex at lycus.org
http://lycus.org