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ippStsOverlongString
The numeric result becomes useful only when tied to the exact operation and object state. At least one produced destination string exceeded the length expected by the caller or algorithm contract.
Where the result is produced
Evidence to preserve
| Capture | Diagnostic value |
|---|---|
| Function, offending string index, expected/actual length, encoding, destination capacity, and source segment. | Identifies the concrete object and operation associated with Intel IPP destination string longer than expected. |
| IppStatus sign and value interpreted using the same IPP headers as the linked library. | Separates argument or lifecycle state from the provider beneath Intel IPP destination string longer than expected. |
| Output-buffer state and checksum before and after the call. | Creates a stable before-and-after comparison. |
| Reference result or invariant appropriate to the primitive domain. | Shows whether the returned status is the first result or a translated summary. |
Preserve output-buffer state and checksum before and after the call for that result case before reinstalling, rebooting, clearing state, or substituting another device or provider.
A controlled diagnostic sequence
- Feed a boundary-length string and one over-limit control. Treat a changed result as a new boundary rather than automatic resolution of the original status.
- Run one boundary input and one known-good control without changing dispatch/library version. Repeat the original supported operation so the check remains relevant to the failing return.
- Check the status immediately; IPP does not preserve a global last-status value. Keep unrelated inputs fixed so the change remains attributable to the original call.
Correction and proof
Targeted correction. Allocate from documented maximum/query results or enforce input limits while preserving explicit truncation policy. Modify only the object, argument, policy, provider, or lifecycle state identified by the collected evidence.
Acceptance criterion. Maximum supported strings round-trip and over-limit input is rejected or resized without memory overwrite. Re-run the original operation that produced the recorded status under its original identity and supported configuration, then keep one negative control that still produces the expected neighboring outcome.
Technical references
References for ippStsOverlongString on the deployed platform version.
- Intel: Integrated Performance Primitives product and documentation — defines the status namespace used.
- Intel IPP developer guide — documents the API or lifecycle boundary behind the original result.
- Intel IPP error-reporting reference — provides ABI, implementation, or protocol context.
- AllStat source record: Intel ippdefs.h semantics — supports the portability and verification limits.
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