https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95174
Iain Buclaw <ibuclaw at gdcproject dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |INVALID
Status|UNCONFIRMED |RESOLVED
--- Comment #1 from Iain Buclaw <ibuclaw at gdcproject dot org> ---
(In reply to Witold Baryluk from comment #0)
> https://explore.dgnu.org/z/LppySp
>
>
[--snip--]
>
> Is incorrectly compiled to 'nop; ret'
>
It is correct, all those functions do nothing. What you're missing is a 'ref'
or 'out' storage class on the 'o' parameter.
Rationale, static arrays are value types in D (they don't saturate to pointers
like in C).
See https://dlang.org/spec/arrays.html#static-arrays
>
> As a bonus:
>
> ```
> void fffff(immutable(float[4]) x, float[4] o) {
> o[2] = x[1] + x[3];
> }
>
> import std.stdio : writeln;
>
> void main() {
> immutable(float[4]) k = [7.0f, 5.3f, 1.2f, 3.2f];
> float[4] o;
> fffff(k, o);
> writeln(o);
> }
>
> ```
>
> prints '[nan, nan, nan, nan]', but it should: '[nan, nan, 8.5, nan]'.
>
>
All NaNs is the correct result here too.
