Compile of derived-type array allocation is very slow

[Thomas Koenig]

Hi Luke,

> I'm looking for a work-around to some very long compile-times we are 
> observing in our codebase.  I've isolated the issue to a single allocate 
> statement which is allocating an array of derived types.  The variable 
> I'm allocating is quite complex, containing many additional layers of 
> allocatable derived-types.  I've created a test case that exposes the 
> problem, see below for code.

Wow - this really _is_ a compile-time hog.

I don't know of any workaround to this, I have submitted
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81827 to
track this issue.

Regards

	Thomas