Incredibly slow allocation with jagged arrays

[PierU]

@rwmsu

Just curious, is there a reason a compiler can’t do this at compile or link time. Does it have to wait until run time.

The array of derived type is itself an allocatable, so it can happen only at runtime:

   type(dyn), allocatable :: d(:)
   allocate(d(1000000))

It would be diffferent if it was a static array:

   type(dyn) :: d(1000000)