nealrichardson commented on pull request #8256:
URL: https://github.com/apache/arrow/pull/8256#issuecomment-725035841
It's puzzling to me why that failure isn't on every build, but I can
reproduce it locally. The issue is:
```r
min.Array <- function(..., na.rm = FALSE) {
scalar_aggregate("min_max", ..., na.rm = na.rm)$GetFieldByName("min")
}
```
`scalar_aggregate("min_max", ...)` (aka compute::CallFunction) should return
a `StructScalar` but instead it's returning just a `Scalar`, which doesn't have
a `GetFieldByName` method.
There is the Scalar/StructScalar handling in scalar.cpp
https://github.com/apache/arrow/pull/8256/files#diff-15908f875c08c0199f6416241e0aa043509eed9741ba6e5bcb6113940ec61105
But maybe (and on certain compilers only?) it's not getting picked up
correctly in compute.cpp
https://github.com/apache/arrow/pull/8256/files#diff-a138b87f0da58d824c72293eab62d9f352718dcb7f41a47ea7e1c3c84bbe27ddR136
?
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