https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91073
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
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Last reconfirmed|2019-07-03 00:00:00 |2019-11-19
--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
N.B. the summary "if constexpr no longer works directly with Concepts" is not
true in general. I'm using concepts with if-constexpr extensively in libstdc++
code e.g.
https://gcc.gnu.org/git/?p=gcc.git;a=blob;f=libstdc%2B%2B-v3/include/bits/range_access.h;h=de074460c16189f29fd2d0b31c81e2231843d2a8;hb=HEAD#l402
The bug only seems to happen when the concept is variadic.
