[Bug fortran/87448] ICE at trans-expr:3417 in allocate statement with type signature using an associated variable

[mscfd at gmx dot net]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87448

--- Comment #2 from martin <mscfd at gmx dot net> ---
Originally I came across this problem in a large module with a slightly more
complex function with gfortran-7.3.0 (standard version from ubuntu 18.4). I got
the same bogus error, which Janus has seen for this reduced testcase with
gfortran-5.5. Taking out the function and related class I got the ICE, but was
not able to reproduce this error.

In short: I think that the bogus error is still present in recent gfortran
versions (or is just another symptom of this problem).