Message The _Bool keyword is not supported in this language
mode. It will be treated as an identifier in this
compilation.
Description Support for the _Bool keyword is only available in
certain language modes. Support is not present when
the compiler is in VAX C, K & R (common), or strict
ANSI89 standard modes. In these language modes _Bool
will be treated as an identifier.
User Action Compile using one of the other compilation modes.