For std::bit_cast (from) to be well-defined, both types must be:

Same size and trivially copyable, with no padding effect on value bits being required

POD with the same size, and To must be trivially copyable; no pointers-to-virtual issues

Multiple ChoiceIntermediate 45s

std::bit_cast Requirements

For std::bit_cast<To>(from) to be well-defined, both types must be:

Options

1Same size and trivially copyable, with no padding effect on value bits being required
2POD with the same size, and To must be trivially copyable; no pointers-to-virtual issues
3Reference types of equal size
4Volatile-qualified arrays

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