[all-commits] [llvm/llvm-project] a892b0: PR49465: Disallow constant evaluation of a call to...

[Richard Smith via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: a892b0015ed6af5945d06e87ca5da1ad8be7ad29
      https://github.com/llvm/llvm-project/commit/a892b0015ed6af5945d06e87ca5da1ad8be7ad29
  Author: Richard Smith <richard at metafoo.co.uk>
  Date:   2021-03-09 (Tue, 09 Mar 2021)

  Changed paths:
    M clang/include/clang/Basic/DiagnosticASTKinds.td
    M clang/lib/AST/ExprConstant.cpp
    M clang/test/SemaCXX/cxx2a-constexpr-dynalloc.cpp

  Log Message:
  -----------
  PR49465: Disallow constant evaluation of a call to operator delete(nullptr).

The only time we would consider allowing this is inside a call to
std::allocator<T>::deallocate, whose contract does not permit deletion
of null pointers.