druntime 2.087 regression? (was: Old codebase stops compiling at 2.087)

[Steven Schveighoffer]

On 11/17/19 10:45 AM, James Blachly wrote:

> /home/james/dmd2.087/dmd2/linux/bin64/../../src/druntime/import/object.d(3453,36): 
> Error: cannot implicitly convert expression aa of type 
> shared(GSeqAllele[string]) to const(shared(GSeqAllele)[string])

There's a subtle removing of the shared from the entire AA. Is that on 
purpose?

i.e. I see shared(GSeqAllele[string]) in one, and 
shared(GSeqAllele)[string] in another.

-Steve