rust-lang / rust-lang/rust-bindgen

When `dynamic_link_require_all` fails to find a symbol, it passes up a nonspecific error code

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enhancement help wanted
Dominant language
Rust
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Description

It'd be helpful if we instead passed up a linkage error message with the name of the failing symbol.
Unfortunately, this may require yet another SemVer-breaking change.

Note that this only applies to the Windows version of libloading. The Linux version includes the name of the symbol in the system error message.
It's debatable as to whether a patch should be created for bindgen or libloading.

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Trace the Windows path for dynamic_link_require_all and compare it with the Linux behavior described in the issue. Determine whether the change belongs in bindgen or libloading, then verify that a missing symbol produces a linkage error naming that symbol without breaking the intended API contract.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
tooling
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

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