https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99683
Bug ID: 99683
Summary: Deduction failure when using CTAD of CNTTP inside a
deduction guide
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: omer.rosler at gmail dot com
Target Milestone: ---
The following code causes a deduction failure on gcc and is accepted by clang.
It happens when using a CTAD for a CNTTP inside an explicit deduction guide.
I'm pretty sure it is legal C++20.
https://godbolt.org/z/Y49T6P
