Message        Invalid syntax for the C99 _Pragma operator, its
                operands cannot be recognized.

 Description    After macro expansion and whitespace has been
                removed, the C99 _Pragma keyword must be followed by
                exactly three tokens:  left-parenthesis,
                string-literal (or wide-string), right-parenthesis.
                Any other sequence cannot be processed, and will
                likely produce other spurious compile-time
                diagnostics.

 User Action    Correct the syntax, or compile in a language mode
                that does not recognize the C99_Pragma operator (e.g.
                if your code has used this reserved identifier for
                some other purpose).