Public bug reported:

Backported go-1.13 came with issues with zlib.

In some projects i see link errors:

golang.org/x/crypto/openpgp/packet.(*Compressed).parse: relocation target 
compress/zlib.NewReaderDict not defined
github.com/go-git/go-git/v5/plumbing/format/packfile.NewEncoder: relocation 
target compress/zlib.NewWriterLevelDict not defined
github.com/go-git/go-git/v5/plumbing/format/packfile.(*Encoder).entry: 
relocation target compress/zlib.(*Writer).Reset not defined
github.com/go-git/go-git/v5/plumbing/format/packfile.(*Scanner).copyObject: 
relocation target type.compress/zlib.Resetter not defined
...


also reported in https://github.com/GoogleCloudPlatform/osconfig/issues/279


and compiling a trivial program (example from compress/zlib reference) causes 
crash during linking:


root@a6a24cdee4e3:/src/qqq# cat go.mod 
module github.com/foo/baz

go 1.13
root@a6a24cdee4e3:/src/qqq# cat main.go 
package main

import (
        "bytes"
        "compress/zlib"
)

func main() {
        var b bytes.Buffer
        w := zlib.NewWriter(&b)
        w.Write([]byte("hello, world\n"))
        w.Close()
}
root@a6a24cdee4e3:/src/qqq# go version
go version go1.13.8 linux/amd64
root@a6a24cdee4e3:/src/qqq# cat /etc/lsb-release 
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=16.04
DISTRIB_CODENAME=xenial
DISTRIB_DESCRIPTION="Ubuntu 16.04.7 LTS"
root@a6a24cdee4e3:/src/qqq# go build -v
# github.com/foo/baz
panic: runtime error: index out of range [23] with length 0

goroutine 1 [running]:
cmd/link/internal/ld.decodetypeKind(...)
        /usr/lib/go-1.13/src/cmd/link/internal/ld/decodesym.go:69
cmd/link/internal/ld.newtype(0xc0006f4000, 0xc0007146e0, 0xc000618e68)
        /usr/lib/go-1.13/src/cmd/link/internal/ld/dwarf.go:424 +0x29e1
cmd/link/internal/ld.defgotype(0xc0006f4000, 0xc0007146e0, 0x1a)
        /usr/lib/go-1.13/src/cmd/link/internal/ld/dwarf.go:419 +0x1c8
cmd/link/internal/ld.dwarfGenerateDebugInfo(0xc0006f4000)
        /usr/lib/go-1.13/src/cmd/link/internal/ld/dwarf.go:1900 +0x91c
cmd/link/internal/ld.Main(0x84cdc0, 0x10, 0x20, 0x1, 0x7, 0x10, 0x69ac6f, 0x1b, 
0x697756, 0x14, ...)
        /usr/lib/go-1.13/src/cmd/link/internal/ld/main.go:212 +0xb92
main.main()
        /usr/lib/go-1.13/src/cmd/link/main.go:65 +0x1d6

** Affects: golang-1.13 (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1913852

Title:
  zLib link failures on Xenial

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