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STATUS_DEVICE_HINT_NAME_BUFFER_TOO_SMALL
The supplied name buffer cannot hold the remaining device hint
STATUS_DEVICE_HINT_NAME_BUFFER_TOO_SMALL is a size-reporting failure. The operation has more device-hint name data available than fits in the caller-provided buffer. It usually points to incorrect capacity calculation, a stale required-length value, or confusion between bytes and characters.
Correct handling
- Use the returned required size when the API provides one, then allocate a new buffer and retry.
- Confirm whether the length includes a terminating null character.
- For Unicode names, distinguish a byte count from a
WCHARcount. - Preserve any enumeration cursor only if the API states that retrying continues from the same position.
Why fixed buffers fail
Device identifiers and hint names can grow when namespace prefixes, instance identifiers, or bus-specific components are included. A fixed stack buffer that works on one machine may truncate on another. Prefer a query-size-then-fetch pattern and impose a separate sanity limit for malformed or hostile data.
References
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