badalprasadsingh opened a new issue, #1798:
URL: https://github.com/apache/iceberg-go/issues/1798
### Apache Iceberg version
main (development)
### Please describe the bug 🐞
When `NewMetadataBuilder(formatVersion)` builds a Metadata Builder with
`base` left `nil` (only `MetadataBuilderFromBase` sets it). Calling
`AddSnapshot` or `AddSnapshotUpdate` on such a builder panics:
```bash
panic: runtime error: invalid memory address or nil pointer dereference
table.(*MetadataBuilder).addSnapshotInternal
table/metadata.go:522
```
Reason for this : `addSnapshotInternal` unconditionally calls
`b.base.LastUpdatedMillis()` to compute `masTS`, with no `nil` check - unlike
`currentNextRowID()`, which already guards the same `b.base` field.
### Status
Working on the fix
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