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[Ruby] Exported Arrow::TableBatchReader crashes after GC when its table is not referenced #54689
Description
Describe the bug, including details regarding any error messages, version, and platform.
A stream exported from an Arrow::TableBatchReader crashes when it is imported, if the table it was created from has been garbage collected.
require "arrow"
address = Arrow::TableBatchReader.new(Arrow::Table.new("a" => Arrow::Int32Array.new([1, 2, 3]))).export
GC.start
p Arrow::RecordBatchReader.import(address).read_all
# => [BUG] Segmentation fault at 0x0000000000000018
The crash is in arrow::ExportSchema, called from ExportStreamSchema:
libarrow.2500.1.0.dylib(_ZN5arrow12ExportSchemaERKNS_6SchemaEP11ArrowSchema+0x90)
libarrow.2500.1.0.dylib(_ZN5arrow12_GLOBAL__N_118ExportStreamSchemaERKNSt3__110shared_ptrINS_17RecordBatchReaderEEEP11ArrowSchema)
Environment: red-arrow 25.0.1, apache-arrow-glib 25.0.1 (Homebrew), Ruby 3.4.1, macOS 15.4.1 (arm64)
Possibly related to #54687
Component(s)
Ruby
Activity
GH-54689: [GLib] Keep the table alive in GArrowTableBatchReader (#55387)
kou commentedon Nov 6, 2026
Issue resolved by pull request 55387
#55387