`bunx bun` in "access denied" folder crashes but should give better error

[RiskyMH]

How can we reproduce the crash?

1. cd "C:\Documents and Settings"
2. bunx bun

It makes sense that it errors, but @paperdave said there should be a better message then just crash. Also in a way as I'm using bunx it may not need to have access to the folder?

Relevant log output

No response

Stack Trace (bun.report)

Bun v1.1.5 (#10383) on windows x86_64 [BunxCommand]

error: CouldntReadCurrentDirectory

• run_command.zig:862: configureEnvForRun
• Allocator.zig:98: rawFree
• cli.zig:1752: start

Features:

[paperdave]

Both paths in https://github.com/oven-sh/bun/blob/e3689e7e83507ae9c63dac7d785e41884daead66/src/cli/run_command.zig#L844-L863

should print some better text than "error loading current directory"

then in crash_handler.zig's handleRootError, the error can be ignored, similar to how InvalidArgument doesnt print anything. an alternative is to do all the error printing there, however i think the better message will be within the configureEnvForRun function

[sossost]

Hello, @paperdave I am sossost, a new contributor. Can I solve this problem??

[ducktype]

Bun v1.1.5 ([#10383](https://github.com/oven-sh/bun/pull/10383)) on windows x86_64_baseline [UpdateCommand]

Illegal instruction at address 0x7FF65F9E4AB1

- [`tccpp.c:535`](https://github.com/oven-sh/bun/blob/e3689e7e83507ae9c63dac7d785e41884daead66/src/deps/tinycc/tccpp.c#L535): `get_tok_str`
- [`tccpp.c:535`](https://github.com/oven-sh/bun/blob/e3689e7e83507ae9c63dac7d785e41884daead66/src/deps/tinycc/tccpp.c#L535): `get_tok_str`
- [`Allocator.zig:98`](https://github.com/oven-sh/bun/blob/e3689e7e83507ae9c63dac7d785e41884daead66/src/deps/zig/lib/std/mem/Allocator.zig#L98): `rawFree`
- [`semver.zig:724`](https://github.com/oven-sh/bun/blob/e3689e7e83507ae9c63dac7d785e41884daead66/src/install/semver.zig#L724): `orderWithoutTag`
- [`npm.zig:661`](https://github.com/oven-sh/bun/blob/e3689e7e83507ae9c63dac7d785e41884daead66/src/install/npm.zig#L661): `writeFile`
- [`bun.zig:1774`](https://github.com/oven-sh/bun/blob/e3689e7e83507ae9c63dac7d785e41884daead66/src/bun.zig#L1774): `insert`
- ??? at `0x1257d` in /KERNEL32.DLL
- ??? at `0x5aa48` in /ntdll.dll

Features:

<!-- from bun.report: ASCwkpNtWWPcvCe8cWJO -->

[paperdave]

Hello, @paperdave I am sossost, a new contributor. Can I solve this problem??

sure. i have outlined the code above which is the origin of the error. in riskymh's reproduction, the second case is hit, indicating readDirInfo returned null. it might be possible to extract a better error code from this (is it file not found or access denied? im not really sure how the semantics of the C:\Documents and Settings compatibility hack).

not sure how to reproduce this on macOS and Linux, but i've noticed another issue which is if you are not allowed to read the cwd, you get Unexpected.

In debug:

[paperdave]

note, i dont think we can/should fix the second case. that seems to be a bug in the zig standard library.

[sossost]

@paperdave I modified code based on your advice. Did I write this correctly?

[RiskyMH]

Looks like this doesn't crash anymore!

C:\Documents and Settings>bunx bun
error loading current directory
error: An internal error occurred (CouldntReadCurrentDirectory)