Problem saving function in BSON

[theogf]

Here is my MWE:

save("blah.bson", Dict(:f => f->abs(f)))
Fatal error:
ERROR: type DataType has no field ninitialized

That's with julia 1.7.0, BSON 0.3.4, FileIO 1.11.2 on linux x64

[theogf]

Here are some more tries. It seems to affect only lambda functions:

save("blah.bson", Dict(:f => abs))
# Works
foo(x) = abs(x)
save("blah.bson", Dict(:f => foo))
# Works
save("blah.bson", Dict(:f => x->abs(x))
# Fails with error above

[darsnack]

This is fixed in #102, but we have not merged yet since we want to do away with calling Julia's C internals.

[FishAres]

How much trouble would it be to merge #102 before removing the C internals? I feel a lot of people doing ML are using 1.7 now (iinm newer Zygote versions require 1.7), and it would be great to be able to save Flux models with arbtirary functions in them using BSON.@save again!

[darsnack]

I'll take a look later this week at the PR. I agree it would be better to get something working before tackling a more ambitious revision.

[austinbean]

I have also hit this problem. My use case is:

using Metalhead, Flux
using BSON: @save
m = ResNet50()
@save "model.bson" m
ERROR: type DataType has no field ninitialized ... etc.

Julia Version 1.7.2
Commit bf53498635 (2022-02-06 15:21 UTC)
Platform Info:
OS: macOS (arm64-apple-darwin21.2.0)
CPU: Apple M1 Pro
WORD_SIZE: 64
LIBM: libopenlibm
LLVM: libLLVM-12.0.1 (ORCJIT, cyclone)

BSON v0.3.4