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
The initial table order is reversed before any announcement · case 01
A structured table violates the declared record or column contract.
The initial table order is reversed before any announcement · case 02
A structured table violates the declared record or column contract.
The initial table order is reversed before any announcement · case 03
A structured table violates the declared record or column contract.
The initial table order is reversed before any announcement · case 04
A structured table violates the declared record or column contract.
The initial table order is reversed before any announcement · case 05
A structured table violates the declared record or column contract.
A repeated physical column is admitted as a permutation · case 01
A structured table violates the declared record or column contract.
A repeated physical column is admitted as a permutation · case 02
A structured table violates the declared record or column contract.
A repeated physical column is admitted as a permutation · case 03
A structured table violates the declared record or column contract.
A repeated physical column is admitted as a permutation · case 04
A structured table violates the declared record or column contract.
A repeated physical column is admitted as a permutation · case 05
A structured table violates the declared record or column contract.
Each rearranged row retains an extra slot for the order directive · case 01
A structured table violates the declared record or column contract.
Each rearranged row retains an extra slot for the order directive · case 02
A structured table violates the declared record or column contract.
Each rearranged row retains an extra slot for the order directive · case 03
A structured table violates the declared record or column contract.
Each rearranged row retains an extra slot for the order directive · case 04
A structured table violates the declared record or column contract.
Each rearranged row retains an extra slot for the order directive · case 05
A structured table violates the declared record or column contract.
A continuation fragment attaches to the first field instead of the current field · case 01
A structured table violates the declared record or column contract.
A continuation fragment attaches to the first field instead of the current field · case 02
A structured table violates the declared record or column contract.
A continuation fragment attaches to the first field instead of the current field · case 03
A structured table violates the declared record or column contract.
A continuation fragment attaches to the first field instead of the current field · case 04
A structured table violates the declared record or column contract.
A continuation fragment attaches to the first field instead of the current field · case 05
A structured table violates the declared record or column contract.
A continuation fragment replaces the preceding field text · case 01
A structured table violates the declared record or column contract.
A continuation fragment replaces the preceding field text · case 02
A structured table violates the declared record or column contract.
A continuation fragment replaces the preceding field text · case 03
A structured table violates the declared record or column contract.
A continuation fragment replaces the preceding field text · case 04
A structured table violates the declared record or column contract.
A continuation fragment replaces the preceding field text · case 05
A structured table violates the declared record or column contract.
A continuation fragment creates a new logical field · case 01
A structured table violates the declared record or column contract.
A continuation fragment creates a new logical field · case 02
A structured table violates the declared record or column contract.
A continuation fragment creates a new logical field · case 03
A structured table violates the declared record or column contract.
A continuation fragment creates a new logical field · case 04
A structured table violates the declared record or column contract.
A continuation fragment creates a new logical field · case 05
A structured table violates the declared record or column contract.
An END marker emits a row with fewer fields than declared · case 01
A structured table violates the declared record or column contract.
An END marker emits a row with fewer fields than declared · case 02
A structured table violates the declared record or column contract.
An END marker emits a row with fewer fields than declared · case 03
A structured table violates the declared record or column contract.
An END marker emits a row with fewer fields than declared · case 04
A structured table violates the declared record or column contract.
An END marker emits a row with fewer fields than declared · case 05
A structured table violates the declared record or column contract.
A completed continued-field row remains the active destination · case 01
A structured table violates the declared record or column contract.
A completed continued-field row remains the active destination · case 02
A structured table violates the declared record or column contract.
A completed continued-field row remains the active destination · case 03
A structured table violates the declared record or column contract.
A completed continued-field row remains the active destination · case 04
A structured table violates the declared record or column contract.
A completed continued-field row remains the active destination · case 05
A structured table violates the declared record or column contract.
Checksum verification excludes structural commas from the raw record · case 01
A structured table violates the declared record or column contract.
Checksum verification excludes structural commas from the raw record · case 02
A structured table violates the declared record or column contract.
Checksum verification excludes structural commas from the raw record · case 03
A structured table violates the declared record or column contract.
Checksum verification excludes structural commas from the raw record · case 04
A structured table violates the declared record or column contract.
Checksum verification excludes structural commas from the raw record · case 05
A structured table violates the declared record or column contract.
A text checksum is calculated from UTF-8 bytes instead of code points · case 01
A structured table violates the declared record or column contract.
A text checksum is calculated from UTF-8 bytes instead of code points · case 02
A structured table violates the declared record or column contract.
A text checksum is calculated from UTF-8 bytes instead of code points · case 03
A structured table violates the declared record or column contract.
A text checksum is calculated from UTF-8 bytes instead of code points · case 04
A structured table violates the declared record or column contract.
A text checksum is calculated from UTF-8 bytes instead of code points · case 05
A structured table violates the declared record or column contract.
The first literal pipe is mistaken for a checksum trailer separator · case 01
A structured table violates the declared record or column contract.
The first literal pipe is mistaken for a checksum trailer separator · case 02
A structured table violates the declared record or column contract.
The first literal pipe is mistaken for a checksum trailer separator · case 03
A structured table violates the declared record or column contract.
The first literal pipe is mistaken for a checksum trailer separator · case 04
A structured table violates the declared record or column contract.
The first literal pipe is mistaken for a checksum trailer separator · case 05
A structured table violates the declared record or column contract.
Out-of-range checksum tokens are reduced instead of rejected · case 01
A structured table violates the declared record or column contract.
Out-of-range checksum tokens are reduced instead of rejected · case 02
A structured table violates the declared record or column contract.
Out-of-range checksum tokens are reduced instead of rejected · case 03
A structured table violates the declared record or column contract.
Out-of-range checksum tokens are reduced instead of rejected · case 04
A structured table violates the declared record or column contract.
Out-of-range checksum tokens are reduced instead of rejected · case 05
A structured table violates the declared record or column contract.
A mismatched row checksum is returned as successful data · case 01
A structured table violates the declared record or column contract.
A mismatched row checksum is returned as successful data · case 02
A structured table violates the declared record or column contract.
A mismatched row checksum is returned as successful data · case 03
A structured table violates the declared record or column contract.
A mismatched row checksum is returned as successful data · case 04
A structured table violates the declared record or column contract.
A mismatched row checksum is returned as successful data · case 05
A structured table violates the declared record or column contract.
A row-repeat count is treated as including the original row · case 01
A structured table violates the declared record or column contract.
A row-repeat count is treated as including the original row · case 02
A structured table violates the declared record or column contract.
A row-repeat count is treated as including the original row · case 03
A structured table violates the declared record or column contract.
A row-repeat count is treated as including the original row · case 04
A structured table violates the declared record or column contract.
A row-repeat count is treated as including the original row · case 05
A structured table violates the declared record or column contract.
A repeat control copies the first table row forever · case 01
A structured table violates the declared record or column contract.
A repeat control copies the first table row forever · case 02
A structured table violates the declared record or column contract.
A repeat control copies the first table row forever · case 03
A structured table violates the declared record or column contract.
A repeat control copies the first table row forever · case 04
A structured table violates the declared record or column contract.
A repeat control copies the first table row forever · case 05
A structured table violates the declared record or column contract.
Repeated rows are prepended ahead of earlier data · case 01
A structured table violates the declared record or column contract.
Repeated rows are prepended ahead of earlier data · case 02
A structured table violates the declared record or column contract.
Repeated rows are prepended ahead of earlier data · case 03
A structured table violates the declared record or column contract.
Repeated rows are prepended ahead of earlier data · case 04
A structured table violates the declared record or column contract.
Repeated rows are prepended ahead of earlier data · case 05
A structured table violates the declared record or column contract.
A zero-count repeat control is silently accepted · case 01
A structured table violates the declared record or column contract.
A zero-count repeat control is silently accepted · case 02
A structured table violates the declared record or column contract.
A zero-count repeat control is silently accepted · case 03
A structured table violates the declared record or column contract.
A zero-count repeat control is silently accepted · case 04
A structured table violates the declared record or column contract.
A zero-count repeat control is silently accepted · case 05
A structured table violates the declared record or column contract.
A new data row does not replace the repeat source · case 01
A structured table violates the declared record or column contract.
A new data row does not replace the repeat source · case 02
A structured table violates the declared record or column contract.
A new data row does not replace the repeat source · case 03
A structured table violates the declared record or column contract.
A new data row does not replace the repeat source · case 04
A structured table violates the declared record or column contract.
A new data row does not replace the repeat source · case 05
A structured table violates the declared record or column contract.
Column-major cell indexing uses row-major strides · case 01
A structured table violates the declared record or column contract.
Column-major cell indexing uses row-major strides · case 02
A structured table violates the declared record or column contract.
Column-major cell indexing uses row-major strides · case 03
A structured table violates the declared record or column contract.
Column-major cell indexing uses row-major strides · case 04
A structured table violates the declared record or column contract.
Column-major cell indexing uses row-major strides · case 05
A structured table violates the declared record or column contract.
Column-major block height is taken as width · case 01
A structured table violates the declared record or column contract.
Column-major block height is taken as width · case 02
A structured table violates the declared record or column contract.
Column-major block height is taken as width · case 03
A structured table violates the declared record or column contract.
Column-major block height is taken as width · case 04
A structured table violates the declared record or column contract.
Column-major block height is taken as width · 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 ↗