AliRana30 opened a new pull request, #49086:
URL: https://github.com/apache/arrow/pull/49086
## **Rationale for this change**
"table.cc" : constructor crashes if the first column is null because it
attempts to call `columns[0]->length()` before any validation logic can run.
## **What changes are included in this PR?**
Added a null check for the first column in the constructor logic:
```cpp
if (columns.size() == 0 || !columns[0]) {
num_rows_ = 0;
} else {
num_rows_ = columns[0]->length();
}
## **Are these changes tested?**
Verified with existing unit tests.
## **Are there any user-facing changes?**
No.
Closes #49079
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