Panic on zero length array in exportArray #172
Description
Describe the bug, including details regarding any error messages, version, and platform.
I have seen some panics at line 410 in
arrow-go/arrow/cdata/cdata_exports.go
Lines 403 to 410 in 56b794f
This is when the array childPtrs is of size 0.
Its hard to replicate, so at present my question is simply if zero length arrays should be checked for here? I assume this would be a record with 0 fields?
The panics were with a July commit of release candidate for v18 (linux x86) but wanted to check first if this is a code issue while I try to replicate.
panic: runtime error: index out of range [0] with length 0
goroutine 17 [running, locked to thread]:
github.com/apache/arrow/go/v18/arrow/cdata.exportArray({0x5564f20, 0xc001d91000}, 0x7fac48074650, 0x0)
/home/clive/go/pkg/mod/github.com/apache/arrow/go/v18@v18.0.0-20240722165357-ec58e4de9e08/arrow/cdata/cdata_exports.go:406 +0x10a5
github.com/apache/arrow/go/v18/arrow/cdata.ExportArrowRecordBatch({0x55609b8, 0xc001509a70}, 0x7fac48074650, 0x0)
/home/clive/go/pkg/mod/github.com/apache/arrow/go/v18@v18.0.0-20240722165357-ec58e4de9e08/arrow/cdata/interface.go:250 +0x436
github.com/apache/arrow/go/v18/arrow/cdata.cRecordReader.next({{0x554da68, 0xc001fbe140}, 0x0}, 0x7fac48074650)
/home/clive/go/pkg/mod/github.com/apache/arrow/go/v18@v18.0.0-20240722165357-ec58e4de9e08/arrow/cdata/cdata_exports.go:449 +0x71
github.com/apache/arrow/go/v18/arrow/cdata.streamGetNext(0x7faccc00c890, 0x7fac48074650)
/home/clive/go/pkg/mod/github.com/apache/arrow/go/v18@v18.0.0-20240722165357-ec58e4de9e08/arrow/cdata/exports.go:129 +0xbdComponent(s)
Release