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circo plain/plain-ext parity dashboard

Differential survey of @knowvah/dot-engine circo plain/plain-ext output vs the native dot -K circo oracle (test/corpus/plain-walk.ts), semantic comparison per docs/conformance.md (±0.01 deterministic tolerance, ±0.5 for the iterative engines). Regenerate: npx tsx test/corpus/plain-walk.ts circo && npx tsx test/corpus/parity-report.ts.

Summary

  • Surveyed: 762
  • pass: 731 (95.9%) · diverged (tracked): 0 · accepted (documented, won't-fix): 10
  • errors (oracle/port/timeout, excluded from scoring): 21

Diverged (0)

(none)

Accepted (10) — documented, not chased

id#diffsfirstDiffreason
241_014[edge] 1->2#0/point[2].x: port=3.2757 native=3.2536; [edge] 1->2#0/point[2].y: port=2.9389 native=3.2113; [edge] 1->2#0/point[3].y: port=2.87 native=3.2973; [edge] 1->2#0/point[4].x: port=3.0064 native=2.8453; [edge] 1->2#0/point[4].y: port=2.6791 native=3.9238layout geometry inherited from the circo xdot engine track: id already diverged there with an accepted mechanism (engine acceptance registry / decision journal); plain re-emits the same layout. Journal 2026-07-24.
2475_2320[node] 590_174412/x: port=2226.9 native=2226; [node] 590_174412/y: port=1842.8 native=1842.5; [node] 590_174423/x: port=2223.4 native=2222.9; [node] 590_174423/y: port=1843.4 native=1844.3; [node] 590_174425/x: port=2235.1 native=2235.7layout geometry inherited from the circo xdot engine track: id already diverged there with an accepted mechanism (engine acceptance registry / decision journal); plain re-emits the same layout. Journal 2026-07-24.
graphs-b341[node] 7/label: port=montañas native=(�oracle bug (A4): canon() use-after-free — output.c:103-108 agstrfree()s the agstrdup-ed refstr before the caller prints it, and _agstrcanon returns that pointer whenever no quoting is needed. Labels whose text is not otherwise pooled (latin1/entity-converted, differs from the raw attr bytes) hit refcnt 0 and are freed; the intervening printdouble allocations reuse the block, so native prints garbage/empty. Port prints the correct converted text. Journal 2026-07-24.
graphs-b566[node] Schluesseloel/label: port=Schluesselöl native=�@; [node] Schluesseltraeger/label: port=Schlueßelträger native=�@; [node] Torschluessel/label: port=Torschlüssel native=�@; [node] Torwaechter/label: port=Torwächter native=�@; [node] creation/label: port=<f0>genPräfix|<f1>legennStamm|<f2>heitnSuffix native=<f0>genPr�fix|<f1>legennStamm|<f2>heitnSuffixoracle bug (A4): canon() use-after-free — output.c:103-108 agstrfree()s the agstrdup-ed refstr before the caller prints it, and _agstrcanon returns that pointer whenever no quoting is needed. Labels whose text is not otherwise pooled (latin1/entity-converted, differs from the raw attr bytes) hit refcnt 0 and are freed; the intervening printdouble allocations reuse the block, so native prints garbage/empty. Port prints the correct converted text. Journal 2026-07-24.
graphs-b605[node] 0/label: port=XXXrôôôôôôôôôôôôôôleXXX native=solid; [node] 0/style: port=solid native=ellipse; [node] 0/shape: port=ellipse native=black; [node] 0/color: port=black native=lightgrey; [node] 0/fillcolor: port=lightgrey native=oracle bug (A4): canon() use-after-free — output.c:103-108 agstrfree()s the agstrdup-ed refstr before the caller prints it, and _agstrcanon returns that pointer whenever no quoting is needed. Labels whose text is not otherwise pooled (latin1/entity-converted, differs from the raw attr bytes) hit refcnt 0 and are freed; the intervening printdouble allocations reuse the block, so native prints garbage/empty. Port prints the correct converted text. Journal 2026-07-24.
graphs-Latin15[node] a/label: port=áâãäåæçèéêëìíîïðñòóôõöøùúûü native=solid; [node] a/style: port=solid native=ellipse; [node] a/shape: port=ellipse native=black; [node] a/color: port=black native=lightgrey; [node] a/fillcolor: port=lightgrey native=oracle bug (A4): canon() use-after-free — output.c:103-108 agstrfree()s the agstrdup-ed refstr before the caller prints it, and _agstrcanon returns that pointer whenever no quoting is needed. Labels whose text is not otherwise pooled (latin1/entity-converted, differs from the raw attr bytes) hit refcnt 0 and are freed; the intervening printdouble allocations reuse the block, so native prints garbage/empty. Port prints the correct converted text. Journal 2026-07-24.
graphs-Symbol6[node] greek/label: port=αβγδεζηθικλμνξοπρςστυφχψωϒϖ native=solid; [node] greek/style: port=solid native=ellipse; [node] greek/shape: port=ellipse native=black; [node] greek/color: port=black native=lightgrey; [node] greek/fillcolor: port=lightgrey native=oracle bug (A4): canon() use-after-free — output.c:103-108 agstrfree()s the agstrdup-ed refstr before the caller prints it, and _agstrcanon returns that pointer whenever no quoting is needed. Labels whose text is not otherwise pooled (latin1/entity-converted, differs from the raw attr bytes) hit refcnt 0 and are freed; the intervening printdouble allocations reuse the block, so native prints garbage/empty. Port prints the correct converted text. Journal 2026-07-24.
share-Latin15[node] a/label: port=áâãäåæçèéêëìíîïðñòóôõöøùúûü native=solid; [node] a/style: port=solid native=ellipse; [node] a/shape: port=ellipse native=black; [node] a/color: port=black native=lightgrey; [node] a/fillcolor: port=lightgrey native=oracle bug (A4): canon() use-after-free — output.c:103-108 agstrfree()s the agstrdup-ed refstr before the caller prints it, and _agstrcanon returns that pointer whenever no quoting is needed. Labels whose text is not otherwise pooled (latin1/entity-converted, differs from the raw attr bytes) hit refcnt 0 and are freed; the intervening printdouble allocations reuse the block, so native prints garbage/empty. Port prints the correct converted text. Journal 2026-07-24.
windows-Latin15[node] a/label: port=áâãäåæçèéêëìíîïðñòóôõöøùúûü native=solid; [node] a/style: port=solid native=ellipse; [node] a/shape: port=ellipse native=black; [node] a/color: port=black native=lightgrey; [node] a/fillcolor: port=lightgrey native=oracle bug (A4): canon() use-after-free — output.c:103-108 agstrfree()s the agstrdup-ed refstr before the caller prints it, and _agstrcanon returns that pointer whenever no quoting is needed. Labels whose text is not otherwise pooled (latin1/entity-converted, differs from the raw attr bytes) hit refcnt 0 and are freed; the intervening printdouble allocations reuse the block, so native prints garbage/empty. Port prints the correct converted text. Journal 2026-07-24.
windows-tree2[edge] node2->node8#0/point[2].y: port=0.28853 native=0.069804; [edge] node2->node8#0/point[3].y: port=0.33296 native=0.025375layout geometry inherited from the circo xdot engine track: id already diverged there with an accepted mechanism (engine acceptance registry / decision journal); plain re-emits the same layout. Journal 2026-07-24.

Errors and timeouts (21)

idmessage
1447oracle exit null
1652oracle exit null
1718oracle exit null
1879-2
1880oracle exit null
2095_1oracle exit null
2108oracle exit null
2222oracle exit null
2295
2343Warning: Warning: no value for width of non-ASCII character 207. Falling back to width of space character
2563
258
graphs-b102oracle exit null
graphs-b103oracle exit null
graphs-b7
graphs-badvorooracle exit null
graphs-labelclust-ftd
graphs-labelclust-ndc
graphs-xxoracle exit null
linux.i386-b29Warning: Warning: no hard-coded metrics for 'doxfont'. Falling back to 'Times' metrics
share-b29Warning: Warning: no hard-coded metrics for 'doxfont'. Falling back to 'Times' metrics

Passing ids (731) are omitted for brevity — the full roster is in plain-parity-circo.json.