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zlib.NewReader(bytes.NewBuffer(stream)) can return an error and a nil value #41

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volker-schukai opened this issue Apr 26, 2021 · 1 comment

volker-schukai commented Apr 26, 2021

I have a pdf where the encoding does not seem to be supported, but
I think you should check the error here, otherwise I get a runtime error.

runtime error: invalid memory address or nil pointer dereference

gofpdi/reader.go

Line 509 in cf771f6

zlibReader, _ := zlib.NewReader(bytes.NewBuffer(compressedObj.Stream.Bytes))

Contributor

johan-lejdung commented May 2, 2023

I'm running into the same issue, it's assuming zlib can de-compress it and is returning

// ErrHeader is returned when reading ZLIB data that has an invalid header.
ErrHeader = errors.New("zlib: invalid header")

I fixed it in my fork chaintraced#1, but haven't opened a PR here yet since my previous one is still dangling. #60

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