FreeCADView Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0002204 | Part | Bug | public | 2015-07-30 20:16 | 2022-01-24 19:16 |
| Reporter | biogeo | Assigned To | wmayer | ||
| Priority | normal | Severity | crash | Reproducibility | always |
| Status | resolved | Resolution | fixed | ||
| OS | Linux Mint | OS Version | 13 Maya | ||
| Product Version | 0.15 | ||||
| Target Version | 0.20 | Fixed in Version | 0.20 | ||
| Summary | 0002204: Crash when unioning toruses (upstream OCC bug) | ||||
| Description | When using the part workbench to union two toruses, in certain situations FreeCAD will appear to enter an infinite loop, during which it gradually consumes more and more RAM until the system slows to a crawl and the only solution is to kill the process. I have found this to occur under the following conditions: 1. For both toruses, Radius1 == Radius2, and they are also equal between the two toruses. 2. For both toruses, Angle3 == 90 degrees, i.e., they are both a "quarter donut". 3. The two toruses are positioned to share a circular face. Depending on the relative angle between the planes in which the toruses lie, the union operation will sometimes work correctly, sometimes "succeed" but produce an unexpected result (e.g., only three circular faces with no torus components), and sometimes produce the infinite loop condition described above. | ||||
| Steps To Reproduce | 1. Open a new file and go to the Part workbench 2. Create a torus "Torus" with Radius1=2mm, Radius2=2mm, Angle3=90 3. Create a second torus "Torus001" with Radius1=2mm, Radius2=2mm, Angle3=90 4. Rotate Torus001 90 degrees about the z-axis. The two together should look like a single torus with Angle3=180. 5. Select Torus and Torus001 and use the Union tool. FreeCAD enters an infinite loop gradually allocating more and more RAM until the system slows to a crawl and the process must be killed. The attached file is the result of steps 1-4. Opening this file in a new FreeCAD session and running Union on the two toruses reliably crashes FreeCAD on my system. | ||||
| Tags | #pending, #ready-for-migration, OCC Bug, OCC NotOnRoadmap, upstream | ||||
| FreeCAD Information | |||||
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Forgot to include as additional information: OS: Linux Mint 13 Maya Word size of OS: 64-bit Word size of FreeCAD: 64-bit Version: 0.15.4671 (Git) Branch: releases/FreeCAD-0-15 Hash: 244b3aef360841646cbfe80a1b225c8b39c8380c Python version: 2.7.3 Qt version: 4.8.1 Coin version: 3.1.3 OCC version: 6.8.0.oce-0.17 |
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That's clearly an OpenCascade bug which we are not able to fix. |
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It eventually crashes FreeCAD here, with the OCE from tanderson, OCE patches over OCC 6.9.1 OS: Ubuntu 12.04.5 LTS Word size of OS: 64-bit Word size of FreeCAD: 64-bit Version: 0.16.6523 (Git) Build type: Release Branch: master Hash: ecd6517cb00fcf05edd41a38b3ce1fa8b16ec3ad Python version: 2.7.3 Qt version: 4.8.2 Coin version: 3.1.3 OCC version: 6.9.1.oce-0.18-dev |
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Does this issue persist in OCC 7.x ? If so Is there an open upstream bug we can link to? |
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@biogeo can you re-up the attachment? We restored recently from a backup after an issue we had with th tracker and some attachments like yours didn't make it. |
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@jmaustpc do you mind testing this with OCC7.1 ? |
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Attached is a file that shows the behaviour with occ6.8 where the applications eats all memory. With occ7.2 it now returns immediately but the shape is invalid. On the other hand in practise such a shape doesn't make too much sense anyway. |
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Needs to be tested with OCC7.3 |
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@wmayer can you reproduce in OCC7.3 |
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Yes, the behaviour with OCC7.3 is the same as with 7.2 |
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With OCC7.4 and 7.5 still invalid shapes are created but with 7.6 finally a correct shape is built. |
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Needs to be built with OCC 7.6 |
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This ticket has been migrated to GitHub as issue 5632. |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2015-07-30 20:16 | biogeo | New Issue | |
| 2015-07-30 20:16 | biogeo | File Added: Torus-union-test.fcstd | |
| 2015-07-30 20:25 | biogeo | Note Added: 0006264 | |
| 2016-02-28 18:32 | wmayer | Note Added: 0006855 | |
| 2016-02-28 18:32 | wmayer | Status | new => confirmed |
| 2016-03-01 15:17 | jmaustpc | Note Added: 0006871 | |
| 2017-01-13 17:09 | Kunda1 | Tag Attached: OCC Bug | |
| 2017-01-13 17:09 | Kunda1 | Tag Attached: upstream | |
| 2017-01-13 17:12 | Kunda1 | Note Added: 0007722 | |
| 2017-06-10 19:54 | Kunda1 | Note Added: 0009337 | |
| 2017-08-21 10:53 | Kunda1 | Tag Attached: OCC 7.2 | |
| 2017-08-21 11:01 | Kunda1 | Note Added: 0009974 | |
| 2017-09-02 10:43 | wmayer | File Added: Torus-union.fcstd | |
| 2017-09-02 10:43 | wmayer | Note Added: 0010057 | |
| 2017-10-18 11:21 | wmayer | Project | FreeCAD => Part |
| 2018-05-30 16:05 | Kunda1 | Tag Detached: OCC 7.2 | |
| 2018-05-30 16:05 | Kunda1 | Tag Attached: OCC 7.3 | |
| 2018-05-30 16:05 | Kunda1 | Note Added: 0011307 | |
| 2018-10-14 11:23 | Kunda1 | Tag Attached: OCC NotOnRoadmap | |
| 2018-10-14 11:23 | Kunda1 | Tag Detached: OCC 7.3 | |
| 2019-02-27 21:51 | Kunda1 | Tag Attached: #pending | |
| 2019-02-27 21:57 | Kunda1 | Note Added: 0012796 | |
| 2019-02-28 10:22 | wmayer | Note Added: 0012802 | |
| 2019-02-28 16:48 | Kunda1 | Summary | Crash when unioning toruses => Crash when unioning toruses (upstream OCC bug) |
| 2021-02-06 06:46 | abdullah | Target Version | => 0.20 |
| 2021-12-12 14:44 | wmayer | Note Added: 0016077 | |
| 2021-12-12 14:45 | wmayer | Assigned To | => wmayer |
| 2021-12-12 14:45 | wmayer | Status | confirmed => resolved |
| 2021-12-12 14:45 | wmayer | Resolution | open => fixed |
| 2021-12-12 14:45 | wmayer | Fixed in Version | => 0.20 |
| 2021-12-12 14:45 | wmayer | Note Added: 0016078 | |
| 2022-01-24 19:16 | Kunda1 | Tag Attached: #ready-for-migration |
