Re: support C/C++ identifiers named with non-ASCII characters

[張俊芝 <zjz at zjz dot name>]

Paul.Koning@dell.com 於 2018/5/22 上午2:03 寫道:
> Not all byte strings are valid UTF-8 strings.  When a byte string is delivered from the outside, it makes sense to validate if it's a valid encoding before it is used.  Or you can assume that inputs are valid and rely on "symbol not found" as the general way to handle anything that doesn't match.  For gdb, that may be good enough.

I preferred the latter(I.e. assume all non-ASCII characters are valid 
and rely on "symbol not found"), and it's actually what the patch does. 
Although a compiler has to be strict with validity of non-ASCII 
characters, but for GDB, the latter solution is just good enough - 
Checking only ASCII characters makes GDB work well with all 
ASCII-compliant encodings.