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hash/crc32: unexpected output (?) #36097

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Anveena opened this issue Dec 12, 2019 · 2 comments
Closed

hash/crc32: unexpected output (?) #36097

Anveena opened this issue Dec 12, 2019 · 2 comments
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FrozenDueToAge WaitingForInfo Issue is not actionable because of missing required information, which needs to be provided.

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@Anveena
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Anveena commented Dec 12, 2019

What version of Go are you using (go version)?

go1.13.4

$ go version

Does this issue reproduce with the latest release?

yes

What operating system and processor architecture are you using (go env)?

go env Output
$ go env

What did you do?

data := []byte{0x00,0xB0,0x0D,0x00,0x01,0xC1,0x00,0x00,0x00,0x01,0xF0,0x00,}
tb := crc32.MakeTable(0x04C11DB7)
    rs := crc32.Update(0xFFFFFFFF, tb,data)
    println(rs)

//some crc hash algorithms DO NOT need reverse bit but some DO
//but "hash/crc32" in current go source version DOES NOT support both.
//https://crccalc.com/?crc=00B00D0001C100000001F000&method=crc32&datatype=hex&outtype=hex
//it's the right value.

What did you expect to see?

What did you see instead?
@ALTree
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ALTree commented Dec 12, 2019 •
edited

@Anveena It's not clear what kind of issue you are reporting here. Please provide a complete, runnable program, and explain in more details what you are doing and why the output you get is different from the one you expect.

@ALTree ALTree added the WaitingForInfo Issue is not actionable because of missing required information, which needs to be provided. label Dec 12, 2019
@ALTree ALTree changed the title hash/crc32 hash/crc32: unexpected output (?) Dec 12, 2019
@gopherbot
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Timed out in state WaitingForInfo. Closing.

(I am just a bot, though. Please speak up if this is a mistake or you have the requested information.)

@golang golang locked and limited conversation to collaborators Jan 11, 2021
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@ALTree @gopherbot @Anveena