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Tommaso BianchiandClaude Opus 5
5026dd11a6
snaporca-tkz, the last quarantined test. Root cause read out of the vendored
source rather than guessed: slvs/constrainteq.cpp, Type::ARC_LINE_TANGENT does
ExprVector ap = SK.GetEntity(arc->point[other ? 2 : 1])->PointGetExprs();
so it dereferences the ARC'S ENDPOINTS. A full circle entity carries only
point[0], its centre. point[1] and point[2] are zero handles, FindById throws
"Cannot find handle", and the process ABORTS rather than failing the solve —
taking every later test in the binary with it. That is also the wrong equation
for a circle regardless: it only makes the line perpendicular to the radius at
an endpoint that does not exist.
CT::Tangent no longer hands a full circle to that constraint. For a circle it
emits PT_LINE_DISTANCE(centre, line) = radius, which is precisely what tangency
to a circle means. Arcs keep the ARC_LINE_TANGENT path they are built for.
One limitation, stated rather than buried: the slvs C API takes a constant
distance and offers no way to reference the circle's radius parameter, so the
radius is captured when the constraint is emitted. That is exact whenever the
radius is fixed or is simply not driven by another constraint in the same
solve, and re-solving restores tangency if something else moves it. Tying them
would need an auxiliary point constrained onto both the circle and the line.
With this and eeca6794e7, both quarantined tests are gone and the exclusion in
kernel-test.sh goes with them. A green run now means the whole CAD suite
passed, not "everything except the two we gave up on":
149 cases / 2043 assertions, no filters.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>