[Bug c++/107178] Diagnosis for colon vs semi-colon in a member function declaration

[llvm at rifkin dot dev via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107178

--- Comment #2 from Jeremy R. <llvm at rifkin dot dev> ---
The easy solution is to mention both the bitfield and "hey maybe you meant to
use a ;"