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
Column-major blocks reverse their row order · case 01
A structured table violates the declared record or column contract.
Column-major blocks reverse their row order · case 02
A structured table violates the declared record or column contract.
Column-major blocks reverse their row order · case 03
A structured table violates the declared record or column contract.
Column-major blocks reverse their row order · case 04
A structured table violates the declared record or column contract.
Column-major blocks reverse their row order · case 05
A structured table violates the declared record or column contract.
Column-major block reconstruction reverses physical columns · case 01
A structured table violates the declared record or column contract.
Column-major block reconstruction reverses physical columns · case 02
A structured table violates the declared record or column contract.
Column-major block reconstruction reverses physical columns · case 03
A structured table violates the declared record or column contract.
Column-major block reconstruction reverses physical columns · case 04
A structured table violates the declared record or column contract.
Column-major block reconstruction reverses physical columns · case 05
A structured table violates the declared record or column contract.
A partial last column is dropped without an error · case 01
A structured table violates the declared record or column contract.
A partial last column is dropped without an error · case 02
A structured table violates the declared record or column contract.
A partial last column is dropped without an error · case 03
A structured table violates the declared record or column contract.
A partial last column is dropped without an error · case 04
A structured table violates the declared record or column contract.
A partial last column is dropped without an error · case 05
A structured table violates the declared record or column contract.
Map-cell keys leak into the next map in the same row · case 01
A structured table violates the declared record or column contract.
Map-cell keys leak into the next map in the same row · case 02
A structured table violates the declared record or column contract.
Map-cell keys leak into the next map in the same row · case 03
A structured table violates the declared record or column contract.
Map-cell keys leak into the next map in the same row · case 04
A structured table violates the declared record or column contract.
Map-cell keys leak into the next map in the same row · case 05
A structured table violates the declared record or column contract.
Equals characters inside map values become entry separators · case 01
A structured table violates the declared record or column contract.
Equals characters inside map values become entry separators · case 02
A structured table violates the declared record or column contract.
Equals characters inside map values become entry separators · case 03
A structured table violates the declared record or column contract.
Equals characters inside map values become entry separators · case 04
A structured table violates the declared record or column contract.
Equals characters inside map values become entry separators · case 05
A structured table violates the declared record or column contract.
Map-cell parsing reverses entry keys and values · case 01
A structured table violates the declared record or column contract.
Map-cell parsing reverses entry keys and values · case 02
A structured table violates the declared record or column contract.
Map-cell parsing reverses entry keys and values · case 03
A structured table violates the declared record or column contract.
Map-cell parsing reverses entry keys and values · case 04
A structured table violates the declared record or column contract.
Map-cell parsing reverses entry keys and values · case 05
A structured table violates the declared record or column contract.
An empty map cell is emitted as an empty list · case 01
A structured table violates the declared record or column contract.
An empty map cell is emitted as an empty list · case 02
A structured table violates the declared record or column contract.
An empty map cell is emitted as an empty list · case 03
A structured table violates the declared record or column contract.
An empty map cell is emitted as an empty list · case 04
A structured table violates the declared record or column contract.
An empty map cell is emitted as an empty list · case 05
A structured table violates the declared record or column contract.
Later map entries silently replace an earlier named value · case 01
A structured table violates the declared record or column contract.
Later map entries silently replace an earlier named value · case 02
A structured table violates the declared record or column contract.
Later map entries silently replace an earlier named value · case 03
A structured table violates the declared record or column contract.
Later map entries silently replace an earlier named value · case 04
A structured table violates the declared record or column contract.
Later map entries silently replace an earlier named value · case 05
A structured table violates the declared record or column contract.
A nested header descends only one path component · case 01
A structured table violates the declared record or column contract.
A nested header descends only one path component · case 02
A structured table violates the declared record or column contract.
A nested header descends only one path component · case 03
A structured table violates the declared record or column contract.
A nested header descends only one path component · case 04
A structured table violates the declared record or column contract.
A nested header descends only one path component · case 05
A structured table violates the declared record or column contract.
A later nested column replaces its existing parent object · case 01
A structured table violates the declared record or column contract.
A later nested column replaces its existing parent object · case 02
A structured table violates the declared record or column contract.
A later nested column replaces its existing parent object · case 03
A structured table violates the declared record or column contract.
A later nested column replaces its existing parent object · case 04
A structured table violates the declared record or column contract.
A later nested column replaces its existing parent object · case 05
A structured table violates the declared record or column contract.
Nested column values are stored under their full dotted header · case 01
A structured table violates the declared record or column contract.
Nested column values are stored under their full dotted header · case 02
A structured table violates the declared record or column contract.
Nested column values are stored under their full dotted header · case 03
A structured table violates the declared record or column contract.
Nested column values are stored under their full dotted header · case 04
A structured table violates the declared record or column contract.
Nested column values are stored under their full dotted header · case 05
A structured table violates the declared record or column contract.
Nested header binding splits only the first dot · case 01
A structured table violates the declared record or column contract.
Nested header binding splits only the first dot · case 02
A structured table violates the declared record or column contract.
Nested header binding splits only the first dot · case 03
A structured table violates the declared record or column contract.
Nested header binding splits only the first dot · case 04
A structured table violates the declared record or column contract.
Nested header binding splits only the first dot · case 05
A structured table violates the declared record or column contract.
A leaf assignment overwrites an existing nested object · case 01
A structured table violates the declared record or column contract.
A leaf assignment overwrites an existing nested object · case 02
A structured table violates the declared record or column contract.
A leaf assignment overwrites an existing nested object · case 03
A structured table violates the declared record or column contract.
A leaf assignment overwrites an existing nested object · case 04
A structured table violates the declared record or column contract.
A leaf assignment overwrites an existing nested object · case 05
A structured table violates the declared record or column contract.
A parsed unit retains its closing bracket · case 01
A structured table violates the declared record or column contract.
A parsed unit retains its closing bracket · case 02
A structured table violates the declared record or column contract.
A parsed unit retains its closing bracket · case 03
A structured table violates the declared record or column contract.
A parsed unit retains its closing bracket · case 04
A structured table violates the declared record or column contract.
A parsed unit retains its closing bracket · case 05
A structured table violates the declared record or column contract.
Unit parsing strips significant spaces from column names · case 01
A structured table violates the declared record or column contract.
Unit parsing strips significant spaces from column names · case 02
A structured table violates the declared record or column contract.
Unit parsing strips significant spaces from column names · case 03
A structured table violates the declared record or column contract.
Unit parsing strips significant spaces from column names · case 04
A structured table violates the declared record or column contract.
Unit parsing strips significant spaces from column names · case 05
A structured table violates the declared record or column contract.
Different units under the same column name are treated as duplicate columns · case 01
A structured table violates the declared record or column contract.
Different units under the same column name are treated as duplicate columns · case 02
A structured table violates the declared record or column contract.
Different units under the same column name are treated as duplicate columns · case 03
A structured table violates the declared record or column contract.
Different units under the same column name are treated as duplicate columns · case 04
A structured table violates the declared record or column contract.
Different units under the same column name are treated as duplicate columns · case 05
A structured table violates the declared record or column contract.
A column without annotation receives an invented empty unit · case 01
A structured table violates the declared record or column contract.
A column without annotation receives an invented empty unit · case 02
A structured table violates the declared record or column contract.
A column without annotation receives an invented empty unit · case 03
A structured table violates the declared record or column contract.
A column without annotation receives an invented empty unit · case 04
A structured table violates the declared record or column contract.
A column without annotation receives an invented empty unit · case 05
A structured table violates the declared record or column contract.
Unit labels are case-folded during header parsing · case 01
A structured table violates the declared record or column contract.
Unit labels are case-folded during header parsing · case 02
A structured table violates the declared record or column contract.
Unit labels are case-folded during header parsing · case 03
A structured table violates the declared record or column contract.
Unit labels are case-folded during header parsing · case 04
A structured table violates the declared record or column contract.
Unit labels are case-folded during header parsing · case 05
A structured table violates the declared record or column contract.
Table union sorts column names instead of retaining discovery order · case 01
A structured table violates the declared record or column contract.
Table union sorts column names instead of retaining discovery order · case 02
A structured table violates the declared record or column contract.
Table union sorts column names instead of retaining discovery order · case 03
A structured table violates the declared record or column contract.
Table union sorts column names instead of retaining discovery order · case 04
A structured table violates the declared record or column contract.
Table union sorts column names instead of retaining discovery order · case 05
A structured table violates the declared record or column contract.
A union appends physical input rows without remapping names · case 01
A structured table violates the declared record or column contract.
A union appends physical input rows without remapping names · case 02
A structured table violates the declared record or column contract.
A union appends physical input rows without remapping names · case 03
A structured table violates the declared record or column contract.
A union appends physical input rows without remapping names · case 04
A structured table violates the declared record or column contract.
A union appends physical input rows without remapping names · 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 ↗