heng qian created CALCITE-7398:
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Summary: Fix incorrect cast from Long to int in
VariantNonNull.cast() for BIGINT type
Key: CALCITE-7398
URL: https://issues.apache.org/jira/browse/CALCITE-7398
Project: Calcite
Issue Type: Bug
Components: core
Reporter: heng qian
In `VariantNonNull.java`, the `cast()` method has a bug in the `BIGINT` case at
line 289:
```java
case BIGINT: {
long l = (int) value; // Bug: should be (long) value
...
}
The value field for BIGINT type is stored as Long (verified by the
constructor's assertion assert value instanceof Long). However, the code
incorrectly casts it to int before assigning to the long variable.
This causes a variant value with BIGINT runtime type to be null, since the
cast function throws exception in this place.
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