Sergio Afonso 27498e9942 [Flang][OpenMP] Prevent ICE for certain constructs in unnamed programs (#73938) ...

This patch fixes #72748 by modifying the processing of program units to
search for a symbol to which OpenMP REQUIRES clauses can bind to. Rather
than picking up the first PFT node with a source reference and getting
its associated scope, it picks up the last one.

This avoids using the source from the first specification construct of
a nameless program, which can sometimes not be associated to any scope,
causing an ICE due to an invalid source location.

2024-02-22 14:35:05 +00:00

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