Passing static arrays to C

[Jakob Bornecrantz]

Hey everybody.

How are you supposed to pass static arrays to C functions? I'm 
asking because I'm getting conflicting info from how DMD works 
and on IRC.

The below example prints:
test1 0x7fff857c1db0
test2 0x7fff857c1db0
test3 (nil)
test4 0x7fff857c1db0


D:
void main()
{
        float[3] arr;
        test1(arr);
        test2(&arr[0]);
        test3(0, arr);
        test4(0, &arr[0]);
}

extern(C):
void test1(float[3] arr);
void test2(float *arr);
void test3(int, float[3] arr);
void test4(int, float *arr);


C:
#include <stdio.h>

void test1(float arr[3]) { printf("test1 %p\n", &arr[0]); }
void test2(float arr[3]) { printf("test2 %p\n", &arr[0]); }
void test3(int anything, float arr[3]) { printf("test3 %p\n", 
&arr[0]); }
void test4(int anything, float arr[3]) { printf("test4 %p\n", 
&arr[0]); }

Comments please.

Cheers, Jakob.