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
Short records are omitted from a transposed column · case 01
A structured table violates the declared record or column contract.
Short records are omitted from a transposed column · case 02
A structured table violates the declared record or column contract.
Short records are omitted from a transposed column · case 03
A structured table violates the declared record or column contract.
Short records are omitted from a transposed column · case 04
A structured table violates the declared record or column contract.
Short records are omitted from a transposed column · case 05
A structured table violates the declared record or column contract.
Transposed columns are emitted in reverse physical order · case 01
A structured table violates the declared record or column contract.
Transposed columns are emitted in reverse physical order · case 02
A structured table violates the declared record or column contract.
Transposed columns are emitted in reverse physical order · case 03
A structured table violates the declared record or column contract.
Transposed columns are emitted in reverse physical order · case 04
A structured table violates the declared record or column contract.
Transposed columns are emitted in reverse physical order · case 05
A structured table violates the declared record or column contract.
Transposed cell values are reordered within each column · case 01
A structured table violates the declared record or column contract.
Transposed cell values are reordered within each column · case 02
A structured table violates the declared record or column contract.
Transposed cell values are reordered within each column · case 03
A structured table violates the declared record or column contract.
Transposed cell values are reordered within each column · case 04
A structured table violates the declared record or column contract.
Transposed cell values are reordered within each column · case 05
A structured table violates the declared record or column contract.
Appending data emits a second table header · case 01
A structured table violates the declared record or column contract.
Appending data emits a second table header · case 02
A structured table violates the declared record or column contract.
Appending data emits a second table header · case 03
A structured table violates the declared record or column contract.
Appending data emits a second table header · case 04
A structured table violates the declared record or column contract.
Appending data emits a second table header · case 05
A structured table violates the declared record or column contract.
An unterminated existing row merges with the first appended row · case 01
A structured table violates the declared record or column contract.
An unterminated existing row merges with the first appended row · case 02
A structured table violates the declared record or column contract.
An unterminated existing row merges with the first appended row · case 03
A structured table violates the declared record or column contract.
An unterminated existing row merges with the first appended row · case 04
A structured table violates the declared record or column contract.
An unterminated existing row merges with the first appended row · case 05
A structured table violates the declared record or column contract.
Appending to a terminated table inserts a blank physical row · case 01
A structured table violates the declared record or column contract.
Appending to a terminated table inserts a blank physical row · case 02
A structured table violates the declared record or column contract.
Appending to a terminated table inserts a blank physical row · case 03
A structured table violates the declared record or column contract.
Appending to a terminated table inserts a blank physical row · case 04
A structured table violates the declared record or column contract.
Appending to a terminated table inserts a blank physical row · case 05
A structured table violates the declared record or column contract.
An empty append operation writes a header or terminator · case 01
A structured table violates the declared record or column contract.
An empty append operation writes a header or terminator · case 02
A structured table violates the declared record or column contract.
An empty append operation writes a header or terminator · case 03
A structured table violates the declared record or column contract.
An empty append operation writes a header or terminator · case 04
A structured table violates the declared record or column contract.
An empty append operation writes a header or terminator · case 05
A structured table violates the declared record or column contract.
Appended rows are concatenated without record terminators · case 01
A structured table violates the declared record or column contract.
Appended rows are concatenated without record terminators · case 02
A structured table violates the declared record or column contract.
Appended rows are concatenated without record terminators · case 03
A structured table violates the declared record or column contract.
Appended rows are concatenated without record terminators · case 04
A structured table violates the declared record or column contract.
Appended rows are concatenated without record terminators · case 05
A structured table violates the declared record or column contract.
A later length prefix is searched from the start of the stream · case 01
A structured table violates the declared record or column contract.
A later length prefix is searched from the start of the stream · case 02
A structured table violates the declared record or column contract.
A later length prefix is searched from the start of the stream · case 03
A structured table violates the declared record or column contract.
A later length prefix is searched from the start of the stream · case 04
A structured table violates the declared record or column contract.
A later length prefix is searched from the start of the stream · case 05
A structured table violates the declared record or column contract.
A length-delimited payload includes the colon separator · case 01
A structured table violates the declared record or column contract.
A length-delimited payload includes the colon separator · case 02
A structured table violates the declared record or column contract.
A length-delimited payload includes the colon separator · case 03
A structured table violates the declared record or column contract.
A length-delimited payload includes the colon separator · case 04
A structured table violates the declared record or column contract.
A length-delimited payload includes the colon separator · case 05
A structured table violates the declared record or column contract.
A payload endpoint is relative to the record origin instead of its content origin · case 01
A structured table violates the declared record or column contract.
A payload endpoint is relative to the record origin instead of its content origin · case 02
A structured table violates the declared record or column contract.
A payload endpoint is relative to the record origin instead of its content origin · case 03
A structured table violates the declared record or column contract.
A payload endpoint is relative to the record origin instead of its content origin · case 04
A structured table violates the declared record or column contract.
A payload endpoint is relative to the record origin instead of its content origin · case 05
A structured table violates the declared record or column contract.
Leading-zero length fields are silently accepted · case 01
A structured table violates the declared record or column contract.
Leading-zero length fields are silently accepted · case 02
A structured table violates the declared record or column contract.
Leading-zero length fields are silently accepted · case 03
A structured table violates the declared record or column contract.
Leading-zero length fields are silently accepted · case 04
A structured table violates the declared record or column contract.
Leading-zero length fields are silently accepted · case 05
A structured table violates the declared record or column contract.
A parsed cell leaves its trailing comma in the next length token · case 01
A structured table violates the declared record or column contract.
A parsed cell leaves its trailing comma in the next length token · case 02
A structured table violates the declared record or column contract.
A parsed cell leaves its trailing comma in the next length token · case 03
A structured table violates the declared record or column contract.
A parsed cell leaves its trailing comma in the next length token · case 04
A structured table violates the declared record or column contract.
A parsed cell leaves its trailing comma in the next length token · case 05
A structured table violates the declared record or column contract.
A textual length prefix counts encoded UTF-8 bytes · case 01
A structured table violates the declared record or column contract.
A textual length prefix counts encoded UTF-8 bytes · case 02
A structured table violates the declared record or column contract.
A textual length prefix counts encoded UTF-8 bytes · case 03
A structured table violates the declared record or column contract.
A textual length prefix counts encoded UTF-8 bytes · case 04
A structured table violates the declared record or column contract.
A textual length prefix counts encoded UTF-8 bytes · case 05
A structured table violates the declared record or column contract.
Length prefixes contain redundant leading zeros · case 01
A structured table violates the declared record or column contract.
Length prefixes contain redundant leading zeros · case 02
A structured table violates the declared record or column contract.
Length prefixes contain redundant leading zeros · case 03
A structured table violates the declared record or column contract.
Length prefixes contain redundant leading zeros · case 04
A structured table violates the declared record or column contract.
Length prefixes contain redundant leading zeros · case 05
A structured table violates the declared record or column contract.
Length-prefixed payload delimiters are unnecessarily escaped · case 01
A structured table violates the declared record or column contract.
Length-prefixed payload delimiters are unnecessarily escaped · case 02
A structured table violates the declared record or column contract.
Length-prefixed payload delimiters are unnecessarily escaped · case 03
A structured table violates the declared record or column contract.
Length-prefixed payload delimiters are unnecessarily escaped · case 04
A structured table violates the declared record or column contract.
Length-prefixed payload delimiters are unnecessarily escaped · case 05
A structured table violates the declared record or column contract.
A length-cell writer omits the mandatory trailing delimiter · case 01
A structured table violates the declared record or column contract.
A length-cell writer omits the mandatory trailing delimiter · case 02
A structured table violates the declared record or column contract.
A length-cell writer omits the mandatory trailing delimiter · case 03
A structured table violates the declared record or column contract.
A length-cell writer omits the mandatory trailing delimiter · case 04
A structured table violates the declared record or column contract.
A length-cell writer omits the mandatory trailing delimiter · case 05
A structured table violates the declared record or column contract.
Separators are inserted between independently framed cells · case 01
A structured table violates the declared record or column contract.
Separators are inserted between independently framed cells · case 02
A structured table violates the declared record or column contract.
Separators are inserted between independently framed cells · case 03
A structured table violates the declared record or column contract.
Separators are inserted between independently framed cells · case 04
A structured table violates the declared record or column contract.
Separators are inserted between independently framed cells · case 05
A structured table violates the declared record or column contract.
A zero-count record block disappears from the decoded stream · case 01
A structured table violates the declared record or column contract.
A zero-count record block disappears from the decoded stream · case 02
A structured table violates the declared record or column contract.
A zero-count record block disappears from the decoded stream · case 03
A structured table violates the declared record or column contract.
A zero-count record block disappears from the decoded stream · case 04
A structured table violates the declared record or column contract.
A zero-count record block disappears from the decoded stream · case 05
A structured table violates the declared record or column contract.
Counted blocks reuse the previous block payload list · case 01
A structured table violates the declared record or column contract.
Counted blocks reuse the previous block payload list · case 02
A structured table violates the declared record or column contract.
Counted blocks reuse the previous block payload list · case 03
A structured table violates the declared record or column contract.
Counted blocks reuse the previous block payload list · case 04
A structured table violates the declared record or column contract.
Counted blocks reuse the previous block payload list · 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 ↗