Re: Alignment of struct containing SIMD field - GDC

[Iain Buclaw via Digitalmars-d-learn]

On Wednesday, 1 March 2017 at 19:09:24 UTC, Johan Engelen wrote:
On Wednesday, 1 March 2017 at 18:34:16 UTC, Iain Buclaw wrote:

Simple test case would be:

struct vec_struct {
    bool b2;
    struct {
        bool b;
        int8 field;
    }
}

static assert(vec_struct.b.offsetof == 32);
static assert(vec_struct.field.offsetof == 64);

With explicit align(32), it works:
https://godbolt.org/g/3GjOHW

- Johan

Well obviously, because it adheres to explicit alignment.  The 
compiler just has the wrong idea of how default alignment should 
work.

Raised bug here, and I'm raising a PR now also. 
https://issues.dlang.org/show_bug.cgi?id=17237