[all-commits] [llvm/llvm-project] f48f84: [flang] Fix prescanner bug w/ empty macros in line...

[Peter Klausler via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: f48f844f3ccef16dc5bb3ac6e7be582f01d45317
      https://github.com/llvm/llvm-project/commit/f48f844f3ccef16dc5bb3ac6e7be582f01d45317
  Author: Peter Klausler <pklausler at nvidia.com>
  Date:   2025-05-28 (Wed, 28 May 2025)

  Changed paths:
    M flang/lib/Parser/prescan.cpp
    A flang/test/Preprocessing/bug890.F90

  Log Message:
  -----------
  [flang] Fix prescanner bug w/ empty macros in line continuation (#141274)

When processing free form source line continuation, the prescanner
treats empty keyword macros as if they were spaces or tabs. After
skipping over them, however, there's code that only works if the skipped
characters ended with an actual space or tab. If the last skipped item
was an empty keyword macro's name, the last character of that name would
end up being the first character of the continuation line. Fix.



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