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
Missing union columns are filled with empty strings · case 01
A structured table violates the declared record or column contract.
Missing union columns are filled with empty strings · case 02
A structured table violates the declared record or column contract.
Missing union columns are filled with empty strings · case 03
A structured table violates the declared record or column contract.
Missing union columns are filled with empty strings · case 04
A structured table violates the declared record or column contract.
Missing union columns are filled with empty strings · case 05
A structured table violates the declared record or column contract.
A later table replaces the previously discovered union header · case 01
A structured table violates the declared record or column contract.
A later table replaces the previously discovered union header · case 02
A structured table violates the declared record or column contract.
A later table replaces the previously discovered union header · case 03
A structured table violates the declared record or column contract.
A later table replaces the previously discovered union header · case 04
A structured table violates the declared record or column contract.
A later table replaces the previously discovered union header · case 05
A structured table violates the declared record or column contract.
Union binding maps cell values to column names · case 01
A structured table violates the declared record or column contract.
Union binding maps cell values to column names · case 02
A structured table violates the declared record or column contract.
Union binding maps cell values to column names · case 03
A structured table violates the declared record or column contract.
Union binding maps cell values to column names · case 04
A structured table violates the declared record or column contract.
Union binding maps cell values to column names · case 05
A structured table violates the declared record or column contract.
Row-label extraction uses the last data cell · case 01
A structured table violates the declared record or column contract.
Row-label extraction uses the last data cell · case 02
A structured table violates the declared record or column contract.
Row-label extraction uses the last data cell · case 03
A structured table violates the declared record or column contract.
Row-label extraction uses the last data cell · case 04
A structured table violates the declared record or column contract.
Row-label extraction uses the last data cell · case 05
A structured table violates the declared record or column contract.
Row labels are stripped before identity checks · case 01
A structured table violates the declared record or column contract.
Row labels are stripped before identity checks · case 02
A structured table violates the declared record or column contract.
Row labels are stripped before identity checks · case 03
A structured table violates the declared record or column contract.
Row labels are stripped before identity checks · case 04
A structured table violates the declared record or column contract.
Row labels are stripped before identity checks · case 05
A structured table violates the declared record or column contract.
Row labels remain embedded in the data matrix · case 01
A structured table violates the declared record or column contract.
Row labels remain embedded in the data matrix · case 02
A structured table violates the declared record or column contract.
Row labels remain embedded in the data matrix · case 03
A structured table violates the declared record or column contract.
Row labels remain embedded in the data matrix · case 04
A structured table violates the declared record or column contract.
Row labels remain embedded in the data matrix · case 05
A structured table violates the declared record or column contract.
Row labels are reordered independently from their data · case 01
A structured table violates the declared record or column contract.
Row labels are reordered independently from their data · case 02
A structured table violates the declared record or column contract.
Row labels are reordered independently from their data · case 03
A structured table violates the declared record or column contract.
Row labels are reordered independently from their data · case 04
A structured table violates the declared record or column contract.
Row labels are reordered independently from their data · case 05
A structured table violates the declared record or column contract.
An explicitly empty label is converted to an ordinal · case 01
A structured table violates the declared record or column contract.
An explicitly empty label is converted to an ordinal · case 02
A structured table violates the declared record or column contract.
An explicitly empty label is converted to an ordinal · case 03
A structured table violates the declared record or column contract.
An explicitly empty label is converted to an ordinal · case 04
A structured table violates the declared record or column contract.
An explicitly empty label is converted to an ordinal · case 05
A structured table violates the declared record or column contract.
Fragment arrival order replaces physical field order · case 01
A structured table violates the declared record or column contract.
Fragment arrival order replaces physical field order · case 02
A structured table violates the declared record or column contract.
Fragment arrival order replaces physical field order · case 03
A structured table violates the declared record or column contract.
Fragment arrival order replaces physical field order · case 04
A structured table violates the declared record or column contract.
Fragment arrival order replaces physical field order · case 05
A structured table violates the declared record or column contract.
A fragment offset is treated as the next free position · case 01
A structured table violates the declared record or column contract.
A fragment offset is treated as the next free position · case 02
A structured table violates the declared record or column contract.
A fragment offset is treated as the next free position · case 03
A structured table violates the declared record or column contract.
A fragment offset is treated as the next free position · case 04
A structured table violates the declared record or column contract.
A fragment offset is treated as the next free position · case 05
A structured table violates the declared record or column contract.
Overlapping fragments silently overwrite physical cells · case 01
A structured table violates the declared record or column contract.
Overlapping fragments silently overwrite physical cells · case 02
A structured table violates the declared record or column contract.
Overlapping fragments silently overwrite physical cells · case 03
A structured table violates the declared record or column contract.
Overlapping fragments silently overwrite physical cells · case 04
A structured table violates the declared record or column contract.
Overlapping fragments silently overwrite physical cells · case 05
A structured table violates the declared record or column contract.
A fragmented row returns null padding for missing positions · case 01
A structured table violates the declared record or column contract.
A fragmented row returns null padding for missing positions · case 02
A structured table violates the declared record or column contract.
A fragmented row returns null padding for missing positions · case 03
A structured table violates the declared record or column contract.
A fragmented row returns null padding for missing positions · case 04
A structured table violates the declared record or column contract.
A fragmented row returns null padding for missing positions · case 05
A structured table violates the declared record or column contract.
Every fragment cell is assigned to the fragment start · case 01
A structured table violates the declared record or column contract.
Every fragment cell is assigned to the fragment start · case 02
A structured table violates the declared record or column contract.
Every fragment cell is assigned to the fragment start · case 03
A structured table violates the declared record or column contract.
Every fragment cell is assigned to the fragment start · case 04
A structured table violates the declared record or column contract.
Every fragment cell is assigned to the fragment start · case 05
A structured table violates the declared record or column contract.
A row window counts comment and blank physical records · case 01
A structured table violates the declared record or column contract.
A row window counts comment and blank physical records · case 02
A structured table violates the declared record or column contract.
A row window counts comment and blank physical records · case 03
A structured table violates the declared record or column contract.
A row window counts comment and blank physical records · case 04
A structured table violates the declared record or column contract.
A row window counts comment and blank physical records · case 05
A structured table violates the declared record or column contract.
A half-open row window includes its stop record · case 01
A structured table violates the declared record or column contract.
A half-open row window includes its stop record · case 02
A structured table violates the declared record or column contract.
A half-open row window includes its stop record · case 03
A structured table violates the declared record or column contract.
A half-open row window includes its stop record · case 04
A structured table violates the declared record or column contract.
A half-open row window includes its stop record · case 05
A structured table violates the declared record or column contract.
Filtered rows are labeled with their logical index · case 01
A structured table violates the declared record or column contract.
Filtered rows are labeled with their logical index · case 02
A structured table violates the declared record or column contract.
Filtered rows are labeled with their logical index · case 03
A structured table violates the declared record or column contract.
Filtered rows are labeled with their logical index · case 04
A structured table violates the declared record or column contract.
Filtered rows are labeled with their logical index · case 05
A structured table violates the declared record or column contract.
Whitespace-only physical rows are incorrectly ignored · case 01
A structured table violates the declared record or column contract.
Whitespace-only physical rows are incorrectly ignored · case 02
A structured table violates the declared record or column contract.
Whitespace-only physical rows are incorrectly ignored · case 03
A structured table violates the declared record or column contract.
Whitespace-only physical rows are incorrectly ignored · case 04
A structured table violates the declared record or column contract.
Whitespace-only physical rows are incorrectly ignored · case 05
A structured table violates the declared record or column contract.
Window numbering starts from logical row one · case 01
A structured table violates the declared record or column contract.
Window numbering starts from logical row one · case 02
A structured table violates the declared record or column contract.
Window numbering starts from logical row one · case 03
A structured table violates the declared record or column contract.
Window numbering starts from logical row one · case 04
A structured table violates the declared record or column contract.
Window numbering starts from logical row one · case 05
A structured table violates the declared record or column contract.
A typed person age remains a wire string · case 01
A structured table violates the declared record or column contract.
A typed person age remains a wire string · case 02
A structured table violates the declared record or column contract.
A typed person age remains a wire string · case 03
A structured table violates the declared record or column contract.
A typed person age remains a wire string · case 04
A structured table violates the declared record or column contract.
A typed person age remains a wire string · case 05
A structured table violates the declared record or column contract.
Message row decoding swaps sender and recipient · case 01
A structured table violates the declared record or column contract.
Message row decoding swaps sender and recipient · case 02
A structured table violates the declared record or column contract.
Message row decoding swaps sender and recipient · case 03
A structured table violates the declared record or column contract.
Message row decoding swaps sender and recipient · case 04
A structured table violates the declared record or column contract.
Message row decoding swaps sender and recipient · 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 ↗