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0028656Open CASCADE[OCCT] OCCT:Modeling Algorithmspublic2017-04-14 17:532019-08-12 16:43
[OCCT] 7.5.0* 
bugs modalg_7 bug28656
0028656: 3d offset modifies the input shape
BRepOffset_MakeOffset attempts to modify the input shape in some cases.
pcylinder s 5 15
setflags s locked
explode s f
offsetparameter 1e-7 c i
offsetload s 1 s_2
offsetperform result

the result is an exception (TopoDS_LockedShape: BRep_Builder::UpdateEdge)
Other test cases with an exception like this can be obtained from 'offset' test cases (see 27166 issue).
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Issue History
2017-04-14 17:53isnNew Issue
2017-04-14 17:53isnAssigned To => isn
2017-07-24 09:22msvTarget Version7.2.0 => 7.3.0
2017-09-01 15:28mkvTest case number => bugs modalg_7 bug28656
2017-09-01 15:28mkvNote Added: 0070139
2017-12-05 16:59msvTarget Version7.3.0 => 7.4.0
2019-08-12 16:43msvTarget Version7.4.0 => 7.5.0*

2017-09-01 15:28   
Problem described in issue is reproduced on current state of OCCT.