W8007 Hexadecimal value contains more than three digits (C++)

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(Command-line option to suppress warning = -w-big)

Under older versions of C, a hexadecimal escape sequence could contain no more than three digits.

The ANSI standard allows any number of digits to appear as long as the value fits in a byte.

This warning results when you have a long hexadecimal escape sequence with many leading zero digits (such as \x00045).

Older versions of C would interpret such a string differently.