[Bug c++/101680] [10 Regression] spurious error: use of ‘this’ in a constant expression

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101680
Bug 101680 depends on bug 97399, which changed state.

Bug 97399 Summary: [10 Regression] g++ 9.3 cannot compile SFINAE code with separated declaration and definition, g++ 7.3 compiles
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97399

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