[all-commits] [llvm/llvm-project] 5bdd5d: Fix PR#62594 : static lambda call operator is not ...

[Faisal Vali via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 5bdd5d064d5171b2d5ff6268528cfffd2f86b8ea
      https://github.com/llvm/llvm-project/commit/5bdd5d064d5171b2d5ff6268528cfffd2f86b8ea
  Author: faisal vali <faisalv at yahoo.com>
  Date:   2023-09-16 (Sat, 16 Sep 2023)

  Changed paths:
    M clang/docs/ReleaseNotes.rst
    M clang/lib/Sema/SemaType.cpp
    A clang/test/SemaCXX/cxx23-static-callop-lambda-expression.cpp

  Log Message:
  -----------
  Fix PR#62594 : static lambda call operator is not convertible to function pointer on win32

See issue https://github.com/llvm/llvm-project/issues/62594

This code does not work on win32:

  auto lstatic = []()  static  { return 0;  };
  int (*f2)(void) = lstatic;

Since a calling convention such as CC_X86ThisCall can rightly interfere with the implicit pointer to function conversion if erroneously marked on a static function, the fix entails checking the 'static' specifier on the lambda declarator prior to assigning it a calling convention of an non-static member (which pre-c++23 made sense).