Re: Why are immutable array literals heap allocated?

[Eugene Wissner via Digitalmars-d-learn]

On Thursday, 4 July 2019 at 10:56:50 UTC, Nick Treleaven wrote:

immutable(int[]) f() @nogc {
    return [1,2];
}

onlineapp.d(2): Error: array literal in `@nogc` function `onlineapp.f` may cause a GC allocation

This makes dynamic array literals unusable with @nogc, and adds to GC pressure for no reason. What code would break if dmd used only static data for [1,2]?

immutable(int[]) f() @nogc {
    static immutable arr = [1, 2];
    return arr;
}

You have to spell it out that the data is static.