[all-commits] [llvm/llvm-project] e78236: [flang] Complete the fix for NAMELIST look-ahead case

[Peter Klausler via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: e7823608bc8e63f409ecd262b0e4a5a65a2ca9f8
      https://github.com/llvm/llvm-project/commit/e7823608bc8e63f409ecd262b0e4a5a65a2ca9f8
  Author: Peter Klausler <pklausler at nvidia.com>
  Date:   2021-11-08 (Mon, 08 Nov 2021)

  Changed paths:
    M flang/runtime/connection.cpp
    M flang/runtime/connection.h
    M flang/runtime/io-stmt.cpp
    M flang/runtime/io-stmt.h
    M flang/runtime/namelist.cpp
    M flang/runtime/unit.cpp

  Log Message:
  -----------
  [flang] Complete the fix for NAMELIST look-ahead case

When processing the devious NAMELIST input

  &group logarray = t t t
    = 666 /

for LOGICAL::logarray(3) and INTEGER::t, the runtime library
needs to do some look-ahead on the input stream to make sure
that the last "t" on the first line is a truth value rather than
an item name -- which in this case it is.  This look-ahead
was implemented in a previous patch but only worked for internal
input cases; this patch implements look-ahead capabilities for
input from an external file, too (and also adjusts repeated
list-directed input items to use this infrastructure, too).

Differential Revision: https://reviews.llvm.org/D113311