bruth commented on issue #1764: WIP - Pulsar Go client library URL: https://github.com/apache/incubator-pulsar/pull/1764#issuecomment-392879817 @merlimat Just ran into this using the reader example. ``` panic: interface conversion: interface {} is nil, not *pulsar.readerCallback goroutine 17 [running, locked to thread]: github.com/apache/incubator-pulsar/pulsar-client-go/pulsar.pulsarReaderListenerProxy(0x7000004158f8, 0x4c00b30, 0x482a630) /Users/ruthb/Code/go/src/github.com/apache/incubator-pulsar/pulsar-client-go/pulsar/c_reader.go:124 +0xd7 github.com/apache/incubator-pulsar/pulsar-client-go/pulsar._cgoexpwrap_07f19b7e46c2_pulsarReaderListenerProxy(0x7000004158f8, 0x4c00b30, 0x482a630) _cgo_gotypes.go:1579 +0x3f ``` It looks like the code assumes a `*readerCallback` will be set and this does not use the assertion check: ```go rc, ok := restorePointer(ctx).(*readerCallback) if ok { rc.channel <- ReaderMessage{rc.reader, newMessageWrapper(message)} } ```
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