Go
Go stringer Tool Compile-Time Guard Outdated and Fails to Detect Appended Constants
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Personal experienceImported from BlueskyPublished Oct 13, 2026
Impact: Appending a constant trips nothing, and String() returns Status(3).
From the original report
“stringer's generated guard tells you to expect an "invalid array index" compiler error when enum values move. Go 1.27.2 prints "invalid argument: index 1 out of bounds [0:1]". Appending a constant trips nothing, and String() returns Status(3).”
Read original Bluesky ↗
Details & sources
- How received
- Imported from Bluesky
- Source published
- Oct 13, 2026
- Observed
- Unknown
- Added to CleanApp
- Oct 13, 2026
- Product connection
- Affected product or place
- Original issue status
- Unknown
- Resolution
- Unknown
- Verification
- Not independently reproduced
Source count unknown
Why this source type: The author provides a concrete reproduction and observation of unexpected compiler/tool behavior and incorrect return values.
CleanApp AI summary
Go stringer Tool Compile-Time Guard Outdated and Fails to Detect Appended Constants: Code generated by the Go 'stringer' tool contains an outdated compile-time guard error message and fails to trigger when new constants are appended, resulting in unexpected String() output.
Report counts are not affected-user counts. A closed original issue does not confirm a fix.
Public ID: rpt_L6QcTYvM_RPcxKkTbDVtZg