[PATCH] D86553: [flang] Improve error handling for bad characters in source

[Peter Klausler via Phabricator via llvm-commits]

klausler created this revision.
klausler added reviewers: sscalpone, PeteSteinfeld.
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.
klausler requested review of this revision.

When an illegal character appears in Fortran source (after
preprocessing), catch and report it in the prescanning phase
rather than leaving it for the parser to cope with.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D86553

Files:
  flang/include/flang/Parser/characters.h
  flang/lib/Parser/prescan.cpp
  flang/lib/Parser/token-sequence.cpp
  flang/lib/Parser/token-sequence.h
  flang/test/Preprocessing/pp130.F90

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