Compilation issue with unicode character in c++

Question

I was trying to compile a c++ file but I got the following error :

error C3850: '\uD800': a universal-character-name specifies an invalid character

error C3850: '\uDFFF': a universal-character-name specifies an invalid character

The line having error is :

ValidateEmailAddr (L"\uD800\uDFFF@\uD800\uDFFF.com", false);

How to fix this issue ?

I suggest you to google the error before asking questions (Just copy and paste the first line in the Google search box). Happy coding. — Mohsen Kamrani
– Mohsen Kamrani, Commented Jul 22, 2016 at 8:43

H. Guijt · Accepted Answer · 2016-07-22 08:56:06Z

The characters you specify are a surrogate pair - a pair of 16-bit quantites that together define one unicode code point (with value 0x103FF). The compiler is correct: this is not a valid code point, so you shouldn't be using it (see http://www.fileformat.info/info/unicode/char/103ff/index.htm).

If, despite this, you still want this value, you'll have to trick the compiler in some way. One possibility is to construct the value dynamically:

wchar_t bla [20]; bla [0] = 0xD800; bla [1] = 0xDFFF; ...etc.

This is not as convenient, but really, the compiler is only trying to help you avoid an error here...

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