[Issue 14571] [REG2.064] Large static arrays seem to lock up DMD

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=14571

--- Comment #5 from ag0aep6g at gmail.com ---
(In reply to Kenji Hara from comment #4)
> Reduced test case:
> 
> struct S(T, size_t dim)
> {
>     T[dim] data;
> }
> version(OK) alias X = S!(  uint, 128*1024);
> version(NG) alias X = S!(double, 128*1024);

This compiles quickly for me. Only when I wrap T in another struct does it
grind to a halt:

----
struct D(T) {T m;}
struct S(T, size_t dim)
{
    D!T[dim] data;
}
version(OK) alias X = S!(  uint, 128*1024);
version(NG) alias X = S!(double, 128*1024);
----

[...]
> Therefore, following code also hits the performance issue.
> 
> struct S(T, size_t dim)
> {
>     T[dim] data = 1;  // non-zero elemnet
> }
> alias X = S!(uint, 128*1024);

Same here. I only see the issue with another struct:

----
struct D(T) {T m = 1; /* non-zero element */}
struct S(T, size_t dim)
{
    D!T[dim] data;
}
alias X = S!(uint, 128*1024);
----

--