Xtpacz opened a new issue, #12282:
URL: https://github.com/apache/gluten/issues/12282
### Backend
VL (Velox)
### Bug description
### Description
#### Problem
When RLike / REGEXP with an RE2-incompatible pattern (e.g., \uXXXX Unicode
escapes) is used in a JOIN condition, Gluten crashes at runtime instead of
falling back to Spark:
```
org.apache.gluten.exception.GlutenException: VeloxUserError
Error Code: INVALID_ARGUMENT
Reason: invalid regular expression: invalid escape sequence: \u
Context: rlike(node_value-stream:0_1, ^[\u4e00-\u9fa5]{2,10}[0-9]+$:VARCHAR)
Function: checkForBadPattern
File: velox/functions/lib/Re2Functions.cpp
Line: 25
```
### Gluten version
main branch
### Spark version
Spark-3.3.x
### Spark configurations
_No response_
### System information
_No response_
### Relevant logs
```bash
```
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