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
Revision installation sorts header names without moving values · case 01
A structured table violates the declared record or column contract.
Revision installation sorts header names without moving values · case 02
A structured table violates the declared record or column contract.
Revision installation sorts header names without moving values · case 03
A structured table violates the declared record or column contract.
Revision installation sorts header names without moving values · case 04
A structured table violates the declared record or column contract.
Revision installation sorts header names without moving values · case 05
A structured table violates the declared record or column contract.
A repeated schema version overwrites its established mapping · case 01
A structured table violates the declared record or column contract.
A repeated schema version overwrites its established mapping · case 02
A structured table violates the declared record or column contract.
A repeated schema version overwrites its established mapping · case 03
A structured table violates the declared record or column contract.
A repeated schema version overwrites its established mapping · case 04
A structured table violates the declared record or column contract.
A repeated schema version overwrites its established mapping · case 05
A structured table violates the declared record or column contract.
Unknown schema-stream tags are skipped · case 01
A structured table violates the declared record or column contract.
Unknown schema-stream tags are skipped · case 02
A structured table violates the declared record or column contract.
Unknown schema-stream tags are skipped · case 03
A structured table violates the declared record or column contract.
Unknown schema-stream tags are skipped · case 04
A structured table violates the declared record or column contract.
Unknown schema-stream tags are skipped · case 05
A structured table violates the declared record or column contract.
A new object opener abandons the current grouped record · case 01
A structured table violates the declared record or column contract.
A new object opener abandons the current grouped record · case 02
A structured table violates the declared record or column contract.
A new object opener abandons the current grouped record · case 03
A structured table violates the declared record or column contract.
A new object opener abandons the current grouped record · case 04
A structured table violates the declared record or column contract.
A new object opener abandons the current grouped record · case 05
A structured table violates the declared record or column contract.
Object fields leak across grouped record boundaries · case 01
A structured table violates the declared record or column contract.
Object fields leak across grouped record boundaries · case 02
A structured table violates the declared record or column contract.
Object fields leak across grouped record boundaries · case 03
A structured table violates the declared record or column contract.
Object fields leak across grouped record boundaries · case 04
A structured table violates the declared record or column contract.
Object fields leak across grouped record boundaries · case 05
A structured table violates the declared record or column contract.
An object is closed by another object identifier · case 01
A structured table violates the declared record or column contract.
An object is closed by another object identifier · case 02
A structured table violates the declared record or column contract.
An object is closed by another object identifier · case 03
A structured table violates the declared record or column contract.
An object is closed by another object identifier · case 04
A structured table violates the declared record or column contract.
An object is closed by another object identifier · case 05
A structured table violates the declared record or column contract.
Closing a grouped record leaves it open for later fields · case 01
A structured table violates the declared record or column contract.
Closing a grouped record leaves it open for later fields · case 02
A structured table violates the declared record or column contract.
Closing a grouped record leaves it open for later fields · case 03
A structured table violates the declared record or column contract.
Closing a grouped record leaves it open for later fields · case 04
A structured table violates the declared record or column contract.
Closing a grouped record leaves it open for later fields · case 05
A structured table violates the declared record or column contract.
EOF silently drops an open grouped record · case 01
A structured table violates the declared record or column contract.
EOF silently drops an open grouped record · case 02
A structured table violates the declared record or column contract.
EOF silently drops an open grouped record · case 03
A structured table violates the declared record or column contract.
EOF silently drops an open grouped record · case 04
A structured table violates the declared record or column contract.
EOF silently drops an open grouped record · case 05
A structured table violates the declared record or column contract.
A negative delta is added to the prior cell · case 01
A structured table violates the declared record or column contract.
A negative delta is added to the prior cell · case 02
A structured table violates the declared record or column contract.
A negative delta is added to the prior cell · case 03
A structured table violates the declared record or column contract.
A negative delta is added to the prior cell · case 04
A structured table violates the declared record or column contract.
A negative delta is added to the prior cell · case 05
A structured table violates the declared record or column contract.
A column delta is applied to the first row rather than the prior row · case 01
A structured table violates the declared record or column contract.
A column delta is applied to the first row rather than the prior row · case 02
A structured table violates the declared record or column contract.
A column delta is applied to the first row rather than the prior row · case 03
A structured table violates the declared record or column contract.
A column delta is applied to the first row rather than the prior row · case 04
A structured table violates the declared record or column contract.
A column delta is applied to the first row rather than the prior row · case 05
A structured table violates the declared record or column contract.
An absolute value is interpreted as another delta · case 01
A structured table violates the declared record or column contract.
An absolute value is interpreted as another delta · case 02
A structured table violates the declared record or column contract.
An absolute value is interpreted as another delta · case 03
A structured table violates the declared record or column contract.
An absolute value is interpreted as another delta · case 04
A structured table violates the declared record or column contract.
An absolute value is interpreted as another delta · case 05
A structured table violates the declared record or column contract.
A second-column delta reads the first-column base · case 01
A structured table violates the declared record or column contract.
A second-column delta reads the first-column base · case 02
A structured table violates the declared record or column contract.
A second-column delta reads the first-column base · case 03
A structured table violates the declared record or column contract.
A second-column delta reads the first-column base · case 04
A structured table violates the declared record or column contract.
A second-column delta reads the first-column base · case 05
A structured table violates the declared record or column contract.
A copy cell substitutes a sentinel instead of the numeric base · case 01
A structured table violates the declared record or column contract.
A copy cell substitutes a sentinel instead of the numeric base · case 02
A structured table violates the declared record or column contract.
A copy cell substitutes a sentinel instead of the numeric base · case 03
A structured table violates the declared record or column contract.
A copy cell substitutes a sentinel instead of the numeric base · case 04
A structured table violates the declared record or column contract.
A copy cell substitutes a sentinel instead of the numeric base · case 05
A structured table violates the declared record or column contract.
Record span offsets count characters instead of UTF-8 bytes · case 01
A structured table violates the declared record or column contract.
Record span offsets count characters instead of UTF-8 bytes · case 02
A structured table violates the declared record or column contract.
Record span offsets count characters instead of UTF-8 bytes · case 03
A structured table violates the declared record or column contract.
Record span offsets count characters instead of UTF-8 bytes · case 04
A structured table violates the declared record or column contract.
Record span offsets count characters instead of UTF-8 bytes · case 05
A structured table violates the declared record or column contract.
Byte-span advancement forgets the record separator · case 01
A structured table violates the declared record or column contract.
Byte-span advancement forgets the record separator · case 02
A structured table violates the declared record or column contract.
Byte-span advancement forgets the record separator · case 03
A structured table violates the declared record or column contract.
Byte-span advancement forgets the record separator · case 04
A structured table violates the declared record or column contract.
Byte-span advancement forgets the record separator · case 05
A structured table violates the declared record or column contract.
Record spans include the LF terminator in their payload extent · case 01
A structured table violates the declared record or column contract.
Record spans include the LF terminator in their payload extent · case 02
A structured table violates the declared record or column contract.
Record spans include the LF terminator in their payload extent · case 03
A structured table violates the declared record or column contract.
Record spans include the LF terminator in their payload extent · case 04
A structured table violates the declared record or column contract.
Record spans include the LF terminator in their payload extent · case 05
A structured table violates the declared record or column contract.
A final record delimiter produces a phantom empty record · case 01
A structured table violates the declared record or column contract.
A final record delimiter produces a phantom empty record · case 02
A structured table violates the declared record or column contract.
A final record delimiter produces a phantom empty record · case 03
A structured table violates the declared record or column contract.
A final record delimiter produces a phantom empty record · case 04
A structured table violates the declared record or column contract.
A final record delimiter produces a phantom empty record · case 05
A structured table violates the declared record or column contract.
Span line numbers start at zero · case 01
A structured table violates the declared record or column contract.
Span line numbers start at zero · case 02
A structured table violates the declared record or column contract.
Span line numbers start at zero · case 03
A structured table violates the declared record or column contract.
Span line numbers start at zero · case 04
A structured table violates the declared record or column contract.
Span line numbers start at zero · case 05
A structured table violates the declared record or column contract.
A present empty column is replaced by its default · case 01
A structured table violates the declared record or column contract.
A present empty column is replaced by its default · case 02
A structured table violates the declared record or column contract.
A present empty column is replaced by its default · case 03
A structured table violates the declared record or column contract.
A present empty column is replaced by its default · case 04
A structured table violates the declared record or column contract.
A present empty column is replaced by its default · case 05
A structured table violates the declared record or column contract.
A missing required column is satisfied by a default · case 01
A structured table violates the declared record or column contract.
A missing required column is satisfied by a default · case 02
A structured table violates the declared record or column contract.
A missing required column is satisfied by a default · case 03
A structured table violates the declared record or column contract.
A missing required column is satisfied by a default · case 04
A structured table violates the declared record or column contract.
A missing required column is satisfied by a default · case 05
A structured table violates the declared record or column contract.
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 ↗