================
@@ -8444,9 +8444,16 @@ let CategoryName = "Lambda Issue" in {
"C++ standards before C++20">, InGroup<CXXPre20Compat>, DefaultIgnore;
// C++20 class template argument deduction for alias templates.
- def warn_cxx17_compat_ctad_for_alias_templates : Warning<
- "class template argument deduction for alias templates is incompatible with "
- "C++ standards before C++20">, InGroup<CXXPre20Compat>, DefaultIgnore;
+ def warn_cxx17_compat_ctad_for_alias_templates
+ : Warning<"class template argument deduction for alias templates is "
+ "incompatible with "
+ "C++ standards before C++20">,
+ InGroup<CXXPre20Compat>,
+ DefaultIgnore;
+ def ext_ctad_for_alias_templates_cxx20
+ : ExtWarn<"class template argument deduction for alias templates is a "
+ "C++20 extension">,
+ InGroup<CXX20>;
----------------
Sirraide wrote:
Can you use `CXX20Compat` to define these (there are some examples at the top
of this file)
https://github.com/llvm/llvm-project/pull/133806
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