[all-commits] [llvm/llvm-project] ccca93: Don't allow structured binding declarations to dec...

[Richard Smith via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: ccca93b5a2cb284dcdfecd34db1ca14632d6a1c1
      https://github.com/llvm/llvm-project/commit/ccca93b5a2cb284dcdfecd34db1ca14632d6a1c1
  Author: Richard Smith <richard at metafoo.co.uk>
  Date:   2020-10-23 (Fri, 23 Oct 2020)

  Changed paths:
    M clang/include/clang/Basic/DiagnosticSemaKinds.td
    M clang/lib/Sema/SemaDeclCXX.cpp
    M clang/test/SemaCXX/cxx1z-decomposition.cpp

  Log Message:
  -----------
  Don't allow structured binding declarations to decompose a
lambda-expression's captures.

The built-in structured binding rules for classes require that all
fields can be accessed by name, and the fields introduced for lambda
captures are unnamed, so decomposing a capturing lambda is ill-formed.