Understand the failure.
Verify the repair.
Small, reproducible software failures. The broken implementation, the fix that didn’t work, and the one that passed—preserved together.
Explore the cases ↓How results are verified ↗WHAT THE ARCHIVE CONTAINS
100840 executable cases. 20168 are open.
Every case records the implementation that fails, the fix that did not work, and the repair that passed its checks—with recorded outputs and source hashes. This release adds 100840 cases across 20168 failure mechanisms and 254 domains.
The open tier gives you the failure and the unsuccessful fix for one case in every mechanism. The remaining 80672 cases, 5 variants per mechanism, are member-only: the verified repair, its recorded checks, and the full fixture suite are held in the member archive. Read the methodology ↗
A RECORD OF WHAT WENT WRONG
Browse the archive / 100840
Discarded tab revival: discard locator retention · case 01
The tab workspace reports an incorrect discard locator retention.
Discarded tab revival: discard locator retention · case 02
The tab workspace reports an incorrect discard locator retention.
Discarded tab revival: discard locator retention · case 03
The tab workspace reports an incorrect discard locator retention.
Discarded tab revival: discard locator retention · case 04
The tab workspace reports an incorrect discard locator retention.
Discarded tab revival: discard locator retention · case 05
The tab workspace reports an incorrect discard locator retention.
Discarded tab revival: activation revival request · case 01
The tab workspace reports an incorrect activation revival request.
Discarded tab revival: activation revival request · case 02
The tab workspace reports an incorrect activation revival request.
Discarded tab revival: activation revival request · case 03
The tab workspace reports an incorrect activation revival request.
Discarded tab revival: activation revival request · case 04
The tab workspace reports an incorrect activation revival request.
Discarded tab revival: activation revival request · case 05
The tab workspace reports an incorrect activation revival request.
Discarded tab revival: revived scroll offset · case 01
The tab workspace reports an incorrect revived scroll offset.
Discarded tab revival: revived scroll offset · case 02
The tab workspace reports an incorrect revived scroll offset.
Discarded tab revival: revived scroll offset · case 03
The tab workspace reports an incorrect revived scroll offset.
Discarded tab revival: revived scroll offset · case 04
The tab workspace reports an incorrect revived scroll offset.
Discarded tab revival: revived scroll offset · case 05
The tab workspace reports an incorrect revived scroll offset.
Discarded tab revival: discarded placeholder · case 01
The tab workspace reports an incorrect discarded placeholder.
Discarded tab revival: discarded placeholder · case 02
The tab workspace reports an incorrect discarded placeholder.
Discarded tab revival: discarded placeholder · case 03
The tab workspace reports an incorrect discarded placeholder.
Discarded tab revival: discarded placeholder · case 04
The tab workspace reports an incorrect discarded placeholder.
Discarded tab revival: discarded placeholder · case 05
The tab workspace reports an incorrect discarded placeholder.
Per tab location history: forward branch truncation · case 01
The tab workspace reports an incorrect forward branch truncation.
Per tab location history: forward branch truncation · case 02
The tab workspace reports an incorrect forward branch truncation.
Per tab location history: forward branch truncation · case 03
The tab workspace reports an incorrect forward branch truncation.
Per tab location history: forward branch truncation · case 04
The tab workspace reports an incorrect forward branch truncation.
Per tab location history: forward branch truncation · case 05
The tab workspace reports an incorrect forward branch truncation.
Per tab location history: new location append · case 01
The tab workspace reports an incorrect new location append.
Per tab location history: new location append · case 02
The tab workspace reports an incorrect new location append.
Per tab location history: new location append · case 03
The tab workspace reports an incorrect new location append.
Per tab location history: new location append · case 04
The tab workspace reports an incorrect new location append.
Per tab location history: new location append · case 05
The tab workspace reports an incorrect new location append.
Per tab location history: history cap oldest eviction · case 01
The tab workspace reports an incorrect history cap oldest eviction.
Per tab location history: history cap oldest eviction · case 02
The tab workspace reports an incorrect history cap oldest eviction.
Per tab location history: history cap oldest eviction · case 03
The tab workspace reports an incorrect history cap oldest eviction.
Per tab location history: history cap oldest eviction · case 04
The tab workspace reports an incorrect history cap oldest eviction.
Per tab location history: history cap oldest eviction · case 05
The tab workspace reports an incorrect history cap oldest eviction.
Per tab location history: back position clamp · case 01
The tab workspace reports an incorrect back position clamp.
Per tab location history: back position clamp · case 02
The tab workspace reports an incorrect back position clamp.
Per tab location history: back position clamp · case 03
The tab workspace reports an incorrect back position clamp.
Per tab location history: back position clamp · case 04
The tab workspace reports an incorrect back position clamp.
Per tab location history: back position clamp · case 05
The tab workspace reports an incorrect back position clamp.
Per tab location history: back cursor restoration · case 01
The tab workspace reports an incorrect back cursor restoration.
Per tab location history: back cursor restoration · case 02
The tab workspace reports an incorrect back cursor restoration.
Per tab location history: back cursor restoration · case 03
The tab workspace reports an incorrect back cursor restoration.
Per tab location history: back cursor restoration · case 04
The tab workspace reports an incorrect back cursor restoration.
Per tab location history: back cursor restoration · case 05
The tab workspace reports an incorrect back cursor restoration.
Per tab location history: sibling history isolation · case 01
The tab workspace reports an incorrect sibling history isolation.
Per tab location history: sibling history isolation · case 02
The tab workspace reports an incorrect sibling history isolation.
Per tab location history: sibling history isolation · case 03
The tab workspace reports an incorrect sibling history isolation.
Per tab location history: sibling history isolation · case 04
The tab workspace reports an incorrect sibling history isolation.
Per tab location history: sibling history isolation · case 05
The tab workspace reports an incorrect sibling history isolation.
Locked tab policy: replacement lock veto · case 01
The tab workspace reports an incorrect replacement lock veto.
Locked tab policy: replacement lock veto · case 02
The tab workspace reports an incorrect replacement lock veto.
Locked tab policy: replacement lock veto · case 03
The tab workspace reports an incorrect replacement lock veto.
Locked tab policy: replacement lock veto · case 04
The tab workspace reports an incorrect replacement lock veto.
Locked tab policy: replacement lock veto · case 05
The tab workspace reports an incorrect replacement lock veto.
Locked tab policy: lock toggle preserves other locks · case 01
The tab workspace reports an incorrect lock toggle preserves other locks.
Locked tab policy: lock toggle preserves other locks · case 02
The tab workspace reports an incorrect lock toggle preserves other locks.
Locked tab policy: lock toggle preserves other locks · case 03
The tab workspace reports an incorrect lock toggle preserves other locks.
Locked tab policy: lock toggle preserves other locks · case 04
The tab workspace reports an incorrect lock toggle preserves other locks.
Locked tab policy: lock toggle preserves other locks · case 05
The tab workspace reports an incorrect lock toggle preserves other locks.
Locked tab policy: selection allowed under lock · case 01
The tab workspace reports an incorrect selection allowed under lock.
Locked tab policy: selection allowed under lock · case 02
The tab workspace reports an incorrect selection allowed under lock.
Locked tab policy: selection allowed under lock · case 03
The tab workspace reports an incorrect selection allowed under lock.
Locked tab policy: selection allowed under lock · case 04
The tab workspace reports an incorrect selection allowed under lock.
Locked tab policy: selection allowed under lock · case 05
The tab workspace reports an incorrect selection allowed under lock.
Locked tab policy: view lock badge · case 01
The tab workspace reports an incorrect view lock badge.
Locked tab policy: view lock badge · case 02
The tab workspace reports an incorrect view lock badge.
Locked tab policy: view lock badge · case 03
The tab workspace reports an incorrect view lock badge.
Locked tab policy: view lock badge · case 04
The tab workspace reports an incorrect view lock badge.
Locked tab policy: view lock badge · case 05
The tab workspace reports an incorrect view lock badge.
Locked tab policy: duplicate new view identity · case 01
The tab workspace reports an incorrect duplicate new view identity.
Locked tab policy: duplicate new view identity · case 02
The tab workspace reports an incorrect duplicate new view identity.
Locked tab policy: duplicate new view identity · case 03
The tab workspace reports an incorrect duplicate new view identity.
Locked tab policy: duplicate new view identity · case 04
The tab workspace reports an incorrect duplicate new view identity.
Locked tab policy: duplicate new view identity · case 05
The tab workspace reports an incorrect duplicate new view identity.
Locked tab policy: duplicate starts unlocked · case 01
The tab workspace reports an incorrect duplicate starts unlocked.
Locked tab policy: duplicate starts unlocked · case 02
The tab workspace reports an incorrect duplicate starts unlocked.
Locked tab policy: duplicate starts unlocked · case 03
The tab workspace reports an incorrect duplicate starts unlocked.
Locked tab policy: duplicate starts unlocked · case 04
The tab workspace reports an incorrect duplicate starts unlocked.
Locked tab policy: duplicate starts unlocked · case 05
The tab workspace reports an incorrect duplicate starts unlocked.
Related tab opener path: direct child recognition · case 01
The tab workspace reports an incorrect direct child recognition.
Related tab opener path: direct child recognition · case 02
The tab workspace reports an incorrect direct child recognition.
Related tab opener path: direct child recognition · case 03
The tab workspace reports an incorrect direct child recognition.
Related tab opener path: direct child recognition · case 04
The tab workspace reports an incorrect direct child recognition.
Related tab opener path: direct child recognition · case 05
The tab workspace reports an incorrect direct child recognition.
Related tab opener path: transitive opener subtree · case 01
The tab workspace reports an incorrect transitive opener subtree.
Related tab opener path: transitive opener subtree · case 02
The tab workspace reports an incorrect transitive opener subtree.
Related tab opener path: transitive opener subtree · case 03
The tab workspace reports an incorrect transitive opener subtree.
Related tab opener path: transitive opener subtree · case 04
The tab workspace reports an incorrect transitive opener subtree.
Related tab opener path: transitive opener subtree · case 05
The tab workspace reports an incorrect transitive opener subtree.
Related tab opener path: related insertion boundary · case 01
The tab workspace reports an incorrect related insertion boundary.
Related tab opener path: related insertion boundary · case 02
The tab workspace reports an incorrect related insertion boundary.
Related tab opener path: related insertion boundary · case 03
The tab workspace reports an incorrect related insertion boundary.
Related tab opener path: related insertion boundary · case 04
The tab workspace reports an incorrect related insertion boundary.
Related tab opener path: related insertion boundary · case 05
The tab workspace reports an incorrect related insertion boundary.
Related tab opener path: child ancestry extension · case 01
The tab workspace reports an incorrect child ancestry extension.
Related tab opener path: child ancestry extension · case 02
The tab workspace reports an incorrect child ancestry extension.
Related tab opener path: child ancestry extension · case 03
The tab workspace reports an incorrect child ancestry extension.
Related tab opener path: child ancestry extension · case 04
The tab workspace reports an incorrect child ancestry extension.
Related tab opener path: child ancestry extension · case 05
The tab workspace reports an incorrect child ancestry extension.
INSPECTABLE BY DESIGN
Every result has a runnable source.
Runnable implementations with recorded outputs, source hashes, and explicit contracts. Related variants share a failure mechanism and belong together in evaluation splits.
Read the methodology ↗