[all-commits] [llvm/llvm-project] 2d7fba: [clang] deprecate frelaxed-template-template-args, ...

[Matheus Izvekov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 2d7fba5f95f0614f6f2c4a4ed966b307d617898b
      https://github.com/llvm/llvm-project/commit/2d7fba5f95f0614f6f2c4a4ed966b307d617898b
  Author: Matheus Izvekov <mizvekov at gmail.com>
  Date:   2021-10-27 (Wed, 27 Oct 2021)

  Changed paths:
    M clang/include/clang/Basic/DiagnosticDriverKinds.td
    M clang/include/clang/Basic/LangOptions.def
    M clang/include/clang/Driver/Options.td
    M clang/lib/Driver/SanitizerArgs.cpp
    M clang/lib/Driver/ToolChains/Clang.cpp
    M clang/lib/Driver/ToolChains/CommonArgs.cpp
    M clang/lib/Sema/SemaTemplate.cpp
    M clang/test/CXX/temp/temp.arg/temp.arg.template/p3-2a.cpp
    A clang/test/Driver/frelaxed-template-template-args.cpp
    M clang/test/Lexer/cxx-features.cpp
    M clang/test/SemaTemplate/deduction.cpp
    M clang/test/SemaTemplate/default-arguments.cpp
    M clang/test/SemaTemplate/instantiate-template-template-parm.cpp
    M clang/test/SemaTemplate/nested-template.cpp
    M clang/test/SemaTemplate/temp_arg_template.cpp
    M clang/test/SemaTemplate/temp_arg_template_cxx1z.cpp
    M clang/www/cxx_status.html

  Log Message:
  -----------
  [clang] deprecate frelaxed-template-template-args, make it on by default

A resolution to the ambiguity issues created by P0522, which is a DR solving
CWG 150, did not come as expected, so we are just going to accept the change,
and watch how users digest it.

For now we deprecate the flag with a warning, and make it on by default.
We don't remove the flag completely in order to give users a chance to
work around any problems by disabling it.

Signed-off-by: Matheus Izvekov <mizvekov at gmail.com>

Reviewed By: rsmith

Differential Revision: https://reviews.llvm.org/D109496