[PR #1350] [CLOSED] Fix lifetime annotation warnings in attribute resolution functions #1270

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opened 2026-02-27 09:11:34 +03:00 by kerem · 0 comments

kerem commented

2026-02-27 09:11:34 +03:00

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📋 Pull Request Information

Original PR: https://github.com/lldap/lldap/pull/1350
Author: @Copilot
Created: 11/16/2025
Status: ❌ Closed

Base: main ← Head: copilot/fix-opensuse-warnings

📝 Commits (2)

ac0e078 Initial plan
543d5b1 Add explicit lifetime annotations to fix openSUSE warnings

📊 Changes

1 file changed (+2 additions, -17 deletions)

View changed files

📝 app/src/infra/attributes.rs (+2 -17)

📄 Description

Fix openSUSE Build Warnings for Lifetime Annotations

This PR addresses compiler warnings reported when building lldap 0.6.2 on openSUSE with newer Rust compilers.

Changes Made

Reverted file to v0.6.2 state (without lifetime annotations)
Added explicit <'_> lifetime annotations to four functions in app/src/infra/attributes.rs:
- resolve_group_attribute_description → Option<AttributeDescription<'_>>
- resolve_group_attribute_description_or_default → AttributeDescription<'_>
- resolve_user_attribute_description → Option<AttributeDescription<'_>>
- resolve_user_attribute_description_or_default → AttributeDescription<'_>
Verified build completes without warnings
Verified mismatched_lifetime_syntaxes lint produces no warnings
All tests pass

Issue Details

The openSUSE build for lldap 0.6.2 emitted warnings about "hiding a lifetime that's elided elsewhere is confusing" (mismatched_lifetime_syntaxes lint). The fix explicitly adds the '_ lifetime parameter to return types where the lifetime is inferred from the &str parameter, making the signature clearer and eliminating the warnings.

Testing Results

✅ Build: No warnings
✅ Specific lint check: No mismatched_lifetime_syntaxes warnings
✅ Tests: All tests pass
✅ No behavior changes

Fixes #1345

Original prompt

This section details on the original issue you should resolve

<issue_title>Building 0.6.2 for openSUSE emits warnings with "warning: hiding a lifetime that's elided elsewhere is confusing"</issue_title>
<issue_description>Dear maintainers,

the openSUSE package for lldap 0.6.2 emits the following warning messages. Those do not seem to be critical, but I wanted to report them nevertheless.

[  647s]    Compiling url-escape v0.1.1
[  647s]    Compiling lldap_validation v0.6.0 (/home/abuild/rpmbuild/BUILD/lldap-0.6.2-build/lldap-0.6.2/crates/validation)
[  649s]    Compiling lldap_app v0.6.2 (/home/abuild/rpmbuild/BUILD/lldap-0.6.2-build/lldap-0.6.2/app)
[  652s] warning: hiding a lifetime that's elided elsewhere is confusing
[  652s]   --> app/src/infra/attributes.rs:11:54
[  652s]    |
[  652s] 11 |     pub fn resolve_group_attribute_description(name: &str) -> Option<AttributeDescription> {
[  652s]    |                                                      ^^^^            -------------------- the same lifetime is hidden here
[  652s]    |                                                      |
[  652s]    |                                                      the lifetime is elided here
[  652s]    |
[  652s]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[  652s]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[  652s] help: use `'_` for type paths
[  652s]    |
[  652s] 11 |     pub fn resolve_group_attribute_description(name: &str) -> Option<AttributeDescription<'_>> {
[  652s]    |                                                                                          ++++
[  652s] 
[  652s] warning: hiding a lifetime that's elided elsewhere is confusing
[  652s]   --> app/src/infra/attributes.rs:37:65
[  652s]    |
[  652s] 37 |     pub fn resolve_group_attribute_description_or_default(name: &str) -> AttributeDescription {
[  652s]    |                                                                 ^^^^     -------------------- the same lifetime is hidden here
[  652s]    |                                                                 |
[  652s]    |                                                                 the lifetime is elided here
[  652s]    |
[  652s]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[  652s] help: use `'_` for type paths
[  652s]    |
[  652s] 37 |     pub fn resolve_group_attribute_description_or_default(name: &str) -> AttributeDescription<'_> {
[  652s]    |                                                                                              ++++
[  652s] 
[  652s] warning: hiding a lifetime that's elided elsewhere is confusing
[  652s]   --> app/src/infra/attributes.rs:53:53
[  652s]    |
[  652s] 53 |     pub fn resolve_user_attribute_description(name: &str) -> Option<AttributeDescription> {
[  652s]    |                                                     ^^^^            -------------------- the same lifetime is hidden here
[  652s]    |                                                     |
[  652s]    |                                                     the lifetime is elided here
[  652s]    |
[  652s]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[  652s] help: use `'_` for type paths
[  652s]    |
[  652s] 53 |     pub fn resolve_user_attribute_description(name: &str) -> Option<AttributeDescription<'_>> {
[  652s]    |                                                                                         ++++
[  652s] 
[  652s] warning: hiding a lifetime that's elided elsewhere is confusing
[  652s]   --> app/src/infra/attributes.rs:99:64
[  652s]    |
[  652s] 99 |     pub fn resolve_user_attribute_description_or_default(name: &str) -> AttributeDescription {
[  652s]    |                                                                ^^^^     -------------------- the same lifetime is hidden here
[  652s]    |                                                                |
[  652s]    |                                                                the lifetime is elided here
[  652s]    |
[  652s]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[  652s] help: use `'_` for type paths
[  652s]    |
[  652s] 99 |     pub fn resolve_user_attribute_description_or_default(name: &str) -> AttributeDescription<'_> {
[  652s]    |                                                                                             ++++
[  652s] 
[  685s] warning: `lldap_app` (lib) generated 4 warnings

Kind Regards,
Johannes</issue_description>

Comments on the Issue (you are @copilot in this section)

@nitnelave This looks like openSuse compiled LLDAP with a more recent `rustc` than our MSRV. That's totally fine, and I appreciate the report! I'll have a look when I can (or see if we can so...

Fixes lldap/lldap#1345

💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.

_{🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.}

## 📋 Pull Request Information **Original PR:** https://github.com/lldap/lldap/pull/1350 **Author:** [@Copilot](https://github.com/apps/copilot-swe-agent) **Created:** 11/16/2025 **Status:** ❌ Closed **Base:** `main` ← **Head:** `copilot/fix-opensuse-warnings` --- ### 📝 Commits (2) - [`ac0e078`](https://github.com/lldap/lldap/commit/ac0e0780e99bed866cca97ff819dceb84a7551c0) Initial plan - [`543d5b1`](https://github.com/lldap/lldap/commit/543d5b11dbedddc25fb2e924d38067ba8c71f593) Add explicit lifetime annotations to fix openSUSE warnings ### 📊 Changes **1 file changed** (+2 additions, -17 deletions) <details> <summary>View changed files</summary> 📝 `app/src/infra/attributes.rs` (+2 -17) </details> ### 📄 Description ## Fix openSUSE Build Warnings for Lifetime Annotations This PR addresses compiler warnings reported when building lldap 0.6.2 on openSUSE with newer Rust compilers. ### Changes Made - [x] Reverted file to v0.6.2 state (without lifetime annotations) - [x] Added explicit `<'_>` lifetime annotations to four functions in `app/src/infra/attributes.rs`: - `resolve_group_attribute_description` → `Option<AttributeDescription<'_>>` - `resolve_group_attribute_description_or_default` → `AttributeDescription<'_>` - `resolve_user_attribute_description` → `Option<AttributeDescription<'_>>` - `resolve_user_attribute_description_or_default` → `AttributeDescription<'_>` - [x] Verified build completes without warnings - [x] Verified `mismatched_lifetime_syntaxes` lint produces no warnings - [x] All tests pass ### Issue Details The openSUSE build for lldap 0.6.2 emitted warnings about "hiding a lifetime that's elided elsewhere is confusing" (`mismatched_lifetime_syntaxes` lint). The fix explicitly adds the `'_` lifetime parameter to return types where the lifetime is inferred from the `&str` parameter, making the signature clearer and eliminating the warnings. ### Testing Results - ✅ Build: No warnings - ✅ Specific lint check: No `mismatched_lifetime_syntaxes` warnings - ✅ Tests: All tests pass - ✅ No behavior changes Fixes #1345  <details> <summary>Original prompt</summary> ---- *This section details on the original issue you should resolve* <issue_title>Building 0.6.2 for openSUSE emits warnings with "warning: hiding a lifetime that's elided elsewhere is confusing"</issue_title> <issue_description>Dear maintainers, the openSUSE package for lldap 0.6.2 emits the following warning messages. Those do not seem to be critical, but I wanted to report them nevertheless. ``` [ 647s] Compiling url-escape v0.1.1 [ 647s] Compiling lldap_validation v0.6.0 (/home/abuild/rpmbuild/BUILD/lldap-0.6.2-build/lldap-0.6.2/crates/validation) [ 649s] Compiling lldap_app v0.6.2 (/home/abuild/rpmbuild/BUILD/lldap-0.6.2-build/lldap-0.6.2/app) [ 652s] warning: hiding a lifetime that's elided elsewhere is confusing [ 652s] --> app/src/infra/attributes.rs:11:54 [ 652s] | [ 652s] 11 | pub fn resolve_group_attribute_description(name: &str) -> Option<AttributeDescription> { [ 652s] | ^^^^ -------------------- the same lifetime is hidden here [ 652s] | | [ 652s] | the lifetime is elided here [ 652s] | [ 652s] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [ 652s] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [ 652s] help: use `'_` for type paths [ 652s] | [ 652s] 11 | pub fn resolve_group_attribute_description(name: &str) -> Option<AttributeDescription<'_>> { [ 652s] | ++++ [ 652s] [ 652s] warning: hiding a lifetime that's elided elsewhere is confusing [ 652s] --> app/src/infra/attributes.rs:37:65 [ 652s] | [ 652s] 37 | pub fn resolve_group_attribute_description_or_default(name: &str) -> AttributeDescription { [ 652s] | ^^^^ -------------------- the same lifetime is hidden here [ 652s] | | [ 652s] | the lifetime is elided here [ 652s] | [ 652s] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [ 652s] help: use `'_` for type paths [ 652s] | [ 652s] 37 | pub fn resolve_group_attribute_description_or_default(name: &str) -> AttributeDescription<'_> { [ 652s] | ++++ [ 652s] [ 652s] warning: hiding a lifetime that's elided elsewhere is confusing [ 652s] --> app/src/infra/attributes.rs:53:53 [ 652s] | [ 652s] 53 | pub fn resolve_user_attribute_description(name: &str) -> Option<AttributeDescription> { [ 652s] | ^^^^ -------------------- the same lifetime is hidden here [ 652s] | | [ 652s] | the lifetime is elided here [ 652s] | [ 652s] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [ 652s] help: use `'_` for type paths [ 652s] | [ 652s] 53 | pub fn resolve_user_attribute_description(name: &str) -> Option<AttributeDescription<'_>> { [ 652s] | ++++ [ 652s] [ 652s] warning: hiding a lifetime that's elided elsewhere is confusing [ 652s] --> app/src/infra/attributes.rs:99:64 [ 652s] | [ 652s] 99 | pub fn resolve_user_attribute_description_or_default(name: &str) -> AttributeDescription { [ 652s] | ^^^^ -------------------- the same lifetime is hidden here [ 652s] | | [ 652s] | the lifetime is elided here [ 652s] | [ 652s] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [ 652s] help: use `'_` for type paths [ 652s] | [ 652s] 99 | pub fn resolve_user_attribute_description_or_default(name: &str) -> AttributeDescription<'_> { [ 652s] | ++++ [ 652s] [ 685s] warning: `lldap_app` (lib) generated 4 warnings ``` Kind Regards, Johannes</issue_description> ## Comments on the Issue (you are @copilot in this section) <comments> <comment_new><author>@nitnelave</author><body> This looks like openSuse compiled LLDAP with a more recent `rustc` than our MSRV. That's totally fine, and I appreciate the report! I'll have a look when I can (or see if we can so... </details> - Fixes lldap/lldap#1345  --- 💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more [Copilot coding agent tips](https://gh.io/copilot-coding-agent-tips) in the docs. --- <sub>🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.</sub>