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From: "lts-rudolph at gmx dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/59716] variadic template multiple parameter pack expansion
 fails
Date: Fri, 26 Nov 2021 19:51:00 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D59716

Klaus Rudolph <lts-rudolph at gmx dot de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|FIXED                       |---
             Status|RESOLVED                    |REOPENED

--- Comment #3 from Klaus Rudolph <lts-rudolph at gmx dot de> ---
The attached code again did not compile from gcc 10.x.x

 https://godbolt.org/z/sbej6GeY1

No the error message is:

<source>: In instantiation of 'CheckVariadic<std::tuple<_Tps ...>,
std::tuple<_Types ...> >::CheckVariadic(T1 ..., T2 ..., T1 ...) [with T1 =3D
{int, float}; T2 =3D {char, void*}]':
<source>:53:115:   required from here
<source>:47:116: error: invalid use of pack expansion expression
   47 |         CheckVariadic( T1... args1, T2... args2, T1... args3):
DebugPrinter< T1, T2, T1...>(args1, args2..., args1)... {}
      |=