[all-commits] [llvm/llvm-project] b1e109: [flang] Downgrade an error to a warning for specif...

[Peter Klausler via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b1e109064cf53621408662b2cebfbd70bbcd501b
      https://github.com/llvm/llvm-project/commit/b1e109064cf53621408662b2cebfbd70bbcd501b
  Author: Peter Klausler <pklausler at nvidia.com>
  Date:   2025-08-29 (Fri, 29 Aug 2025)

  Changed paths:
    M flang/include/flang/Semantics/tools.h
    M flang/lib/Semantics/expression.cpp
    M flang/lib/Semantics/tools.cpp
    M flang/test/Semantics/c_loc01.f90

  Log Message:
  -----------
  [flang] Downgrade an error to a warning for specific circumstances (#155675)

We emit an error on the component name in the structure constructor
"__builtin_c_ptr(__address=0)", which is the value of "c_ptr_null()",
because the component name "__address" is PRIVATE to an intrinsic
module. The error is specifically omitted, however, when the name
appears in a module file, since it's what we emit for "c_ptr_null()" in
initializers.

This patch carves out another exception -- downgrading the error to a
warning -- for the case of a PRIVATE component name in a structure
constructor from an intrinsic module when the structure constructor
appears in a module. This case arises when module files are being
reprocessed as Fortran source in order to convert them to hermetic
module files.



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