[Patch, fortran] PR123071 [PDT] ICE on invoking parent's type-bound function with PDT result

[Paul Richard Thomas]

Hi All,

The patch that is posted on the PR turned out to be far too elaborate. This
version fixes the basic problem by resolving the class declared type before
building the typebound function call.

The complication caused by the PDTs was dealt with by the chunks in
trans-decl.cc, which permit the PDT result to be initialized when the
result is not explicitly referenced.

Regtests on FC43/x86_64. OK for mainline?

Paul
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