[PATCH] D82993: [flang] Implement cross-set EQUIVALENCE impossibility checking

[Peter Klausler via Phabricator via llvm-commits]

klausler created this revision.
klausler added reviewers: tskeith, PeteSteinfeld, sscalpone.
klausler added a project: Flang.
Herald added a reviewer: jdoerfert.
Herald added a reviewer: DavidTruby.
Herald added a project: LLVM.
Herald added a subscriber: llvm-commits.

Implement cross-set EQUIVALENCE impossibility checking; fixes
an infinite loop on an erroneous test.  Also fix substring
reference offset calculations in EQUIVALENCE discovered to
be incorrect during testing.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D82993

Files:
  flang/include/flang/Semantics/scope.h
  flang/lib/Semantics/compute-offsets.cpp
  flang/lib/Semantics/resolve-names-utils.cpp
  flang/test/Semantics/equivalence01.f90

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