https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96396
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
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Keywords|needs-bisection |
--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fixed by r13-3639
c++: change -fconcepts to mean C++20 concepts
It was always weird that -fconcepts in C++17 mode meant the same thing as
-fconcepts-ts in C++20 mode; this patch harmonizes the flags so that for TS
concepts you always need to write -fconcepts-ts.
In the unlikely event anyone is still using -fconcepts in C++17 mode, they
can either fix their code to work with C++20 concepts or adjust the compiler
flag.
It still ICEs with -fconcepts-ts -std=c++11
But I'm not surprised that combination doesn't work, the Concepts TS is
supposed to be used with C++17.
