[all-commits] [llvm/llvm-project] d3e5c2: [flang] Handle preprocessor macro expansion edge c...

[Peter Klausler via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d3e5c20ab846303874a2a25e5877c72271fc798b
      https://github.com/llvm/llvm-project/commit/d3e5c20ab846303874a2a25e5877c72271fc798b
  Author: Peter Klausler <35819229+klausler at users.noreply.github.com>
  Date:   2023-11-30 (Thu, 30 Nov 2023)

  Changed paths:
    M flang/lib/Parser/preprocessor.cpp
    M flang/lib/Parser/preprocessor.h
    A flang/test/Preprocessing/unclosed-FLM.F90

  Log Message:
  -----------
  [flang] Handle preprocessor macro expansion edge case (#73835)

When a reference to a function-like macro begins during the rescanning
of the expansion of another macro but is not completed by the end of
that expansion, it is necessary to abort that rescanning of that
expansion and try again when more tokens can be acquired. (See the new
unclosed-FLM.F90 test case.) All other Fortran preprocessors to which I
have access can handle this situation.