Bug 2075 – Spec does not specify how array literals are stored.

It seems DMD currently allocates all array literals on the GC heap. The spec however does not state that this is the required behaviour, and frankly I think it's a bad idea not being able to get a stack array without instead declaring a static array temporary explicitly.

Code to see for yourself: extern(C) int printf(char*, ...); int[] func() { int[] arr = [1,2,3]; return arr; } void main() { int stack; int[] arr = func(); printf("%d %d %d\n", arr[0], arr[1], arr[2]); printf("stack: %p\nwhere? %p\n", &stack, arr.ptr); int[] arr2 = [1,2,3,4,5]; printf("where? %p\n", arr2.ptr); }

Fixed dmd 1.030 and 2.014

It might also be good to state that each array literal evaluation causes a new array to be allocated. (Unlike string literals for example)