[Bug c++/92411] conformance issue with reinterpret_cast in constant expressions

[Bug c++/92411] conformance issue with reinterpret_cast in constant expressions

[wjwray at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92411

Will Wray <wjwray at gmail dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |wjwray at gmail dot com

--- Comment #3 from Will Wray <wjwray at gmail dot com> ---
This particular cast, from const char array to const char pointer, is implicit
so static_cast suffices (and the reinterpret_cast is implictly a static_cast).

Editing your code sample to change reinterpret_cast to static_cast
it is accepted without diagnostic on gcc, clang, msvc, icc
https://gcc.godbolt.org/z/6a694c

The final comment on the bug linked as a possible duplicate shows that
some fixes were committed last month, fixing other cases.
I guess this particular case can be closed.

[Bug c++/92411] conformance issue with reinterpret_cast in constant expressions

[wjwray at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92411

--- Comment #4 from Will Wray <wjwray at gmail dot com> ---
I mis-read this so was too hasty in suggesting "can be closed".
The standard states that a expression evaluation fails to be a constant
expression if it evaluates "reinterpret_cast" (i.e., by named token,
not by the actual strength of cast required, so seems to be the intent).
It's a 50/50 split with gcc & icc accepting, clang and msvc rejecting
https://gcc.godbolt.org/z/drdT66