AssertionError when extracting tarball

[Octogonapus]

We have started getting this exception today when extracting a tarball. We haven't touched our code or the tarball.

ERROR: LoadError: AssertionError: size == padded_size == 0
Stacktrace:
 [1] read_data(::IOStream, ::IOStream; size::Int64, buf::Array{UInt8,1}, tee::Base.DevNull) at /home/ciserver/.julia/packages/Tar/J6O2R/src/extract.jl:544
 [2] #55 at /home/ciserver/.julia/packages/Tar/J6O2R/src/extract.jl:556 [inlined]
 [3] open(::Tar.var"#55#56"{Int64,Array{UInt8,1},Base.DevNull,IOStream}, ::String; kwargs::Base.Iterators.Pairs{Symbol,Bool,Tuple{Symbol},NamedTuple{(:write,),Tuple{Bool}}}) at ./io.jl:325
 [4] #read_data#54 at /home/ciserver/.julia/packages/Tar/J6O2R/src/extract.jl:555 [inlined]
 [5] (::Tar.var"#25#27"{Array{UInt8,1},Bool,IOStream,String})(::Tar.Header, ::Array{SubString{String},1}) at /home/ciserver/.julia/packages/Tar/J6O2R/src/extract.jl:75
 [6] read_tarball(::Tar.var"#25#27"{Array{UInt8,1},Bool,IOStream,String}, ::Tar.var"#1#2", ::IOStream; buf::Array{UInt8,1}, skeleton::Base.DevNull) at /home/ciserver/.julia/packages/Tar/J6O2R/src/extract.jl:333
 [7] extract_tarball(::Function, ::IOStream, ::String; buf::Array{UInt8,1}, skeleton::Base.DevNull, copy_symlinks::Bool) at /home/ciserver/.julia/packages/Tar/J6O2R/src/extract.jl:57
 [8] (::Tar.var"#75#78"{String,IOStream,Tar.var"#1#2"})(::Base.DevNull) at /home/ciserver/.julia/packages/Tar/J6O2R/src/Tar.jl:205
 [9] arg_write(::Tar.var"#75#78"{String,IOStream,Tar.var"#1#2"}, ::Base.DevNull) at /home/ciserver/.julia/packages/ArgTools/4vlk9/src/ArgTools.jl:94
 [10] (::Tar.var"#74#77"{IOStream,Tar.var"#1#2"})(::String) at /home/ciserver/.julia/packages/Tar/J6O2R/src/Tar.jl:204
 [11] arg_mkdir(::Tar.var"#74#77"{IOStream,Tar.var"#1#2"}, ::String) at /home/ciserver/.julia/packages/ArgTools/4vlk9/src/ArgTools.jl:145
 [12] #73 at /home/ciserver/.julia/packages/Tar/J6O2R/src/Tar.jl:200 [inlined]
 [13] open(::Tar.var"#73#76"{Tar.var"#1#2",String}, ::String; kwargs::Base.Iterators.Pairs{Union{},Union{},Tuple{},NamedTuple{(),Tuple{}}}) at ./io.jl:325
 [14] open(::Function, ::String) at ./io.jl:323
 [15] arg_read at /home/ciserver/.julia/packages/ArgTools/4vlk9/src/ArgTools.jl:42 [inlined]
 [16] extract(::Function, ::String, ::String; skeleton::Nothing, copy_symlinks::Nothing) at /home/ciserver/.julia/packages/Tar/J6O2R/src/Tar.jl:199
 [17] #extract#79 at /home/ciserver/.julia/packages/Tar/J6O2R/src/Tar.jl:221 [inlined]
 [18] extract at /home/ciserver/.julia/packages/Tar/J6O2R/src/Tar.jl:221 [inlined]

Any ideas what could cause this?
We are using Julia 1.5.2 and Tar 1.8.0

[StefanKarpinski]

Hmm. That's perplexing. We had a bug like that which got fixed, I guess there may be an even more difficult case. How is extract being called? Is the input a stream or a file or what?

[Octogonapus]

There was a invalid/corrupt (not sure) depot locally that caused this. Wiping it fixed the issue. We called extract with two strings (so a local tar file).

[StefanKarpinski]

It still shouldn't be possible for this assertion to fail. If you could supply a tarball that triggers this, it would be greatly appreciated.

[olegshtch]

@StefanKarpinski Maybe not related but I got same error in JuliaPackaging/Yggdrasil#5781