Hi all,
Earlier today I decided to clone the GCC repo and build the latest code
just to play around with some new C23 features. One thing I attempted
was the following:
typedef _BitInt(128) underlying;
enum my_enum : underlying {
FOO = (underlying)1 << 100;
BAR = (underlying)1 << 101;
};
I expected this to work — it builds on Clang too — but it failed to
compile with the error ‘invalid underlying type’ (or something like that;
I’m going off of memory).
I took a look into the C23 working draft and I see no reference to
bit-precise integers being disallowed as an underlying type to an
enumeration. As a result I assume this is a bug in GCC so I’m reporting
it here just in case. If it’s not a bug, do let me know why that is the
case.
--
— Thomas
