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ippStsRegExpErr
This is a state-object error, not simply a pattern-grammar error. IPP reports it when the pRegExpState-style structure passed to the RegExp operation is not a valid compiled state for the call.
Look for lifetime bugs: using a state after failed compilation, sharing it across incompatible calls, corrupting its backing buffer, or passing a state built by a different IPP version or wrapper path.
What to check
- The return status from the compile/setup function that produced the state.
- The allocation size and alignment of the state buffer.
- Whether the state outlived the pattern and scratch data expected by the wrapper.
Intel IPP RegExp functions · Intel IPP Error Reporting
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