[llvm-bugs] [Bug 43579] Difficult deducing template parameter that should be deducible by virtue of being a callable argument.

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=43579

Richard Smith <richard-llvm at metafoo.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |INVALID
             Status|NEW                         |RESOLVED

--- Comment #2 from Richard Smith <richard-llvm at metafoo.co.uk> ---
Ah, found the rule: this example violates
http://eel.is/c++draft/temp.class.spec.match#3

The other compilers are incorrect to accept it; they presumably don't implement
that rule properly for variadic templates.

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