Bun cannot start without /proc

[Marc-Pierre-Barbier]

What version of Bun is running?

0.2.1

What platform is your computer?

x64

What steps can reproduce the bug?

unmount /proc and then run bun

How often does it reproduce? Is there a required condition?

every time /proc is not present

What is the expected behavior?

to start like nodejs

What do you see instead?

Crash at 0x8A00000000000000

----- bun meta -----
Bun v0.2.1 (1835e4b) Linux x64 #5 SMP PREEMPT_DYNAMIC Wed Oct 19 22:01:04 CEST 2022
RunCommand:
Elapsed: 13ms | User: 0ms | Sys: 11ms
RSS: 67.11MB | Peak: 28.36MB | Commit: 67.11MB | Faults: 158
----- bun meta -----

Ask for #help in https://bun.sh/discord or go to https://bun.sh/issues

Additional information

I wanted to put bun in an embedded Linux install in which /proc wasn't mounted.

this isn't really an important bug but it would be nice to have a clear error at least.

[Jarred-Sumner]

Bun needs /proc to efficiently get the file path for open file descriptors.

What’s the rationale against mounting /proc?

[Marc-Pierre-Barbier]

There is no real reason against mounting /proc it just wasn't done on my system initially.

As I have written in additional information, it's not really important, but it would be cool to have an error message instead of a simple crash.

[Electroid]

In Bun v0.5.0, we implemented a workaround for when /proc is not mounted. a345efd