IDL4CPP — Table 7.11 infers inheritance with something from the standard template library

The text:
"Inherits std::integral_constant<uint32_t, b> where b indicates
the bit_bound of the bitmask."

should instead state

Defines value - Where the value is mapped as the underlying bit_bound of the bit mask.

Type traits may be inherited

Type traits may be inherited, and it is indeed a common practice, so the mapping should remain as is. The restriction would be to inheritance of classes that have a state, such as std::vector or std::string.