[Bug c++/83003] Using the detection idiom and void_t causes an error

[pkeir at outlook dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83003

Paul Keir <pkeir at outlook dot com> changed:

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                 CC|                            |pkeir at outlook dot com

--- Comment #1 from Paul Keir <pkeir at outlook dot com> ---
Created attachment 42615
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=42615&action=edit
The code described in the bug