M1 Mac crashes with missing symbol called error when running init

[steveluscher]

Description of the bug

1. Run git branchless init

Observe this pretty useless error:

 % git branchless init                                                                                                                                                                                                                                    
dyld[63457]: missing symbol called
error: git-branchless died of signal 6

Could this possibly be an M1 MacBook problem?

Version of git-branchless

git-branchless 0.3.8

Version of rustc

rustc 1.55.0 (c8dfcfe04 2021-09-06)

[arxanas]

Hi @steveluscher, sorry to hear that git-branchless isn't working for you. I would guess that it is an M1 Mac problem. Unfortunately, I don't have an M1 to test on.

You could try running a few other similar Rust projects and see if any of them work, such as git-stack and gitui. If one of them does, then we could probably narrow down which of the code or dependencies is causing the issue.

You could also try installing various older versions and see if one works, and then use git bisect to find the first problematic commit.

Unfortunately, I don't know how to debug a dyld error like this.

[martinvonz]

FWIW, git branchless init worked for me on an M1.

I had to lock the versions of cursive and curisve_buffered_backend to the exact versions in Cargo.toml (and I didn't think to use cargo install --locked) because there has apparently been some API changes since then. But that's probably unrelated to the problem reported here.

[arxanas]

Hmm, one possibility would be a compiler bug, which I suppose is not unreasonable for a new architecture. @martinvonz what version of rustc are you using?

[martinvonz]

I'm on 1.57.0.

[steveluscher]

I blew away rustc 1.55.0, installed 1.58.0, and reinstalled git-branchless. Works now.

I guess we'll never know what happened.

Thanks for taking a look!

[arxanas]

Thanks to both of you for the diagnostic work. I added this section to the Troubleshooting guide at https://github.com/arxanas/git-branchless/wiki/Installation. If we see more users hit this case, we could add a check for the architecture/compiler version in build.rs and surface a warning.