[all-commits] [llvm/llvm-project] 848934: [c++20] Fix handling of unqualified lookups from a...

[Richard Smith via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 848934c67d484da737b4b92c087bffce069b24ba
      https://github.com/llvm/llvm-project/commit/848934c67d484da737b4b92c087bffce069b24ba
  Author: Richard Smith <richard at metafoo.co.uk>
  Date:   2019-12-09 (Mon, 09 Dec 2019)

  Changed paths:
    M clang/include/clang/AST/Decl.h
    M clang/include/clang/AST/DeclBase.h
    M clang/include/clang/AST/UnresolvedSet.h
    M clang/include/clang/Sema/Sema.h
    M clang/include/clang/Sema/Template.h
    M clang/lib/AST/Decl.cpp
    M clang/lib/Sema/SemaDeclCXX.cpp
    M clang/lib/Sema/SemaLambda.cpp
    M clang/lib/Sema/SemaTemplateInstantiate.cpp
    M clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
    M clang/lib/Serialization/ASTReaderDecl.cpp
    M clang/lib/Serialization/ASTWriterDecl.cpp
    M clang/test/CXX/class/class.compare/class.compare.default/p1.cpp
    A clang/test/PCH/cxx2a-defaulted-comparison.cpp

  Log Message:
  -----------
  [c++20] Fix handling of unqualified lookups from a defaulted comparison
function.

We need to perform unqualified lookups from the context of a defaulted
comparison, but not until we implicitly define the function, at which
point we can't do those lookups any more. So perform the lookup from the
end of the class containing the =default declaration and store the
lookup results on the defaulted function until we synthesize the body.