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IDProjectCategoryView StatusDate SubmittedLast Update
0031147Community[OCCT] OCCT:Modeling Algorithmspublic2019-11-10 18:262021-05-15 15:34
ReporterVico Liang 
Assigned Tobugmaster 
PrioritynormalSeverityminor 
StatusverifiedResolutionfixed 
PlatformOSOS Version
Product Version[OCCT] 7.4.0 
Target Version[OCCT] 7.6.0*Fixed in Version 
Summary0031147: Modeling Algorithms - BRepOffsetAPI_MakePipeShell null access
Description    TopoDS_Wire aSpine = ... ;//"pipeShell-fail.brep"
    TopoDS_Wire aWire = ... ;//"pipeShell-fail.brep"

    BRepOffsetAPI_MakePipeShell aMakePipe(aSpine);
    aMakePipe.Add(aWire, Standard_False, Standard_False);

    aMakePipe.SetTransitionMode(BRepBuilderAPI_RoundCorner);
    aMakePipe.SetDiscreteMode();
    aMakePipe.SetTolerance();
    aMakePipe.Build();

// Null access occurs as below function stacktrace:
TKBool.dll!BRepFill_PipeShell::BuildHistory(const BRepFill_Sweep & theSweep) Line 1443 C++
     TKBool.dll!BRepFill_PipeShell::Build() Line 795 C++
     TKOffset.dll!BRepOffsetAPI_MakePipeShell::Build() Line 259 C++





Steps To Reproducetest pipe bugs bug31147
TagsNo tags attached.
Test case numberpipe/bugs/bug31147
Attached Files? file icon pipeshell-fail.brep (9,084 bytes) 2019-11-10 18:26
png file icon pipeshell-fail.png (40,653 bytes) 2019-11-10 18:26
png file icon pipeshell-fail-shape.png (14,630 bytes) 2019-11-10 18:27
? file icon spine_28.brep (29,961 bytes) 2021-03-03 12:24
? file icon profile_28_1.brep (2,267 bytes) 2021-03-03 12:24
? file icon profile_28_2.brep (2,276 bytes) 2021-03-03 12:24
? file icon profile_28_3.brep (1,609 bytes) 2021-03-03 12:24
? file icon profile_28_4.brep (1,529 bytes) 2021-03-03 12:25
? file icon profile_28_5.brep (1,653 bytes) 2021-03-03 12:25
? file icon profile_28_6.brep (1,405 bytes) 2021-03-03 12:25
? file icon spine_28_7.5.0.brep (29,965 bytes) 2021-03-15 16:59
? file icon profile_28_1_7.5.0.brep (2,271 bytes) 2021-03-15 16:59
? file icon profile_28_2_7.5.0.brep (2,280 bytes) 2021-03-15 16:59
? file icon profile_28_3_7.5.0.brep (1,613 bytes) 2021-03-15 16:59
? file icon profile_28_4_7.5.0.brep (1,533 bytes) 2021-03-15 16:59
? file icon profile_28_5_7.5.0.brep (1,657 bytes) 2021-03-15 17:00
? file icon profile_28_6_7.5.0.brep (1,409 bytes) 2021-03-15 17:00
? file icon spine_144_CR31147.brep (17,411 bytes) 2021-04-30 10:40
? file icon profile_144_CR31147.brep (2,266 bytes) 2021-04-30 10:40
zip file icon test_512.zip (4,121 bytes) 2021-04-30 16:21
zip file icon test_101.zip (8,005 bytes) 2021-05-06 13:34
zip file icon test_177.zip (3,925 bytes) 2021-05-12 10:04
zip file icon test_951.zip (3,499 bytes) 2021-05-12 10:04
zip file icon test_8879.zip (3,664 bytes) 2021-05-12 10:04

- Relationships
related to 0032343feedbackszy Community Modeling Algorithms - Pipe does not represent the profiles' shapes 

-  Notes
(0099331)
Jerome Caucat (reporter)
2021-03-03 12:23

I encounter the same problem (Segmentation fault in BRepFill_PipeShell::BuildHistory(BRepFill_Sweep const&)) with the attached spine_28 and profile_28_* and the following c++ code:

BRepOffsetAPI_MakePipeShell pipeBuilder(spine);
pipeBuilder.SetTransitionMode(BRepBuilderAPI_RightCorner);
pipeBuilder.SetDiscreteMode();
for (const auto& profile : profiles)
    pipeBuilder.Add(profile);
pipeBuilder.Build(); // <- Crash
pipeBuilder.MakeSolid();

I also experience the crash in DRAW (An exception was caught 0x556a7ad59720 : OSD_SIGSEGV: SIGSEGV 'segmentation violation' detected. Address 8.) with the following code:

pload ALL
restore /tmp/spine_28.brep s
restore /tmp/profile_28_1.brep p1
restore /tmp/profile_28_2.brep p2
restore /tmp/profile_28_3.brep p3
restore /tmp/profile_28_4.brep p4
restore /tmp/profile_28_5.brep p5
restore /tmp/profile_28_6.brep p6
mksweep s
setsweep -DT
addsweep p1
addsweep p2
addsweep p3
addsweep p4
addsweep p5
addsweep p6
buildsweep r -C -S
vdisplay s p1 p2 p3 p4 p5 p6 r
vfit

Note that if I "invert s" before "mksweep s" in the DRAW code above the crash is gone but the pipe's shape does not represent profiles' shape, it is sort of flattened.

- Linux Ubuntu 20.04 64-bit
- Version 7.5
(0099528)
Jerome Caucat (reporter)
2021-03-15 16:56

I actually exported those files with the latest version of OCE that I used to test if my problem had been fixed, I had not realized that the exported brep would be different, I'll now upload the files exported with the version 7.5.0.
(0100617)
szy (manager)
2021-04-27 17:20
edited on: 2021-04-27 17:22

Analyze, please the issue and send me WL estimation.

(0100663)
git (administrator)
2021-04-29 13:42

Branch CR31147 has been created by andrey.kaftasev_159541.

SHA-1: 7cf12dabd2c1d338cb941c5e9f9779390c750473


Detailed log of new commits:

Author: akaftasev
Date: Thu Apr 29 13:40:58 2021 +0300

    0031147: Modeling Algorithms - BRepOffsetAPI_MakePipeShell null access
    
    Changed degmax and segmax for testing
(0100685)
Jerome Caucat (reporter)
2021-04-30 10:41

Hi, thanks for the progress made.

I tried the branch CR31147:

- The crash does not happen anymore on the spine/profile_28 files I provided above in https://tracker.dev.opencascade.org/view.php?id=31147#c99331. [^]
- However I am still not able to correctly construct the pipe: depending on the options used with setsweep the shape is either not constructed or does not correspond to the profile. This can be reproduced in DRAW using the code I provided in https://tracker.dev.opencascade.org/view.php?id=31147#c99331. [^]
- I am experiencing a crash with the files spine_144_CR31147.brep and profile_144_CR31147.brep that I just provided, also reproducible in DRAW: "An exception was caught 0x558bd8dd4b30 : OSD_SIGSEGV: SIGSEGV 'segmentation violation' detected. Address 0".
(0100694)
akaftasev (developer)
2021-04-30 12:56

Dear Jerome Caucat, you can build correct pipe without exceprion from spine_144_CR31147.brep and profile_144_CR31147.brep by using pipe command:

pload ALL
spine_144_CR31147.brep s
restore profile_144_CR31147.brep p

pipe r s p

vdisplay s p r
vfit
(0100696)
git (administrator)
2021-04-30 13:09

Branch CR31147 has been deleted by andrey.kaftasev_159541.

SHA-1: 7cf12dabd2c1d338cb941c5e9f9779390c750473
(0100697)
git (administrator)
2021-04-30 13:10

Branch CR31147 has been created by andrey.kaftasev_159541.

SHA-1: 7c6032f170e49e65a648dd5bfdb799e49841ac3e


Detailed log of new commits:

Author: akaftasev
Date: Thu Apr 29 13:40:58 2021 +0300

    0031147: Modeling Algorithms - BRepOffsetAPI_MakePipeShell null access
    
    Added Draw command 'setsweepparams' to change degmax and segmax parameter manually
(0100698)
Jerome Caucat (reporter)
2021-04-30 13:40

Dear akaftasev,

> Dear Jerome Caucat, you can build correct pipe without exceprion from spine_144_CR31147.brep and profile_144_CR31147.brep by using pipe command:

Ok, but then the pipe is not closed at its ends and is not a solid, I guess I would have to close it myself.

BTW for this particular case I am able to construct it using "setsweep -CN 0 0 1", however I don't know how I can programmatically determine what settings should be used (-CN, -DT, etc.), is this doable?
If the function did not crash I suppose I could try different settings in case of error.
(0100702)
Jerome Caucat (reporter)
2021-04-30 16:21

Please find in test_512.zip a spine and profiles for which the pipe construction used to crash before the fix. After CR31147 the pipe construction does not crash anymore but the pipe is deformed.
(0100705)
akaftasev (developer)
2021-04-30 18:13

In last version of current fix, you can manually set parameters of approximation for sweep algorithm by Draw command 'setsweepparams':
increasing parameters -SM and -DM improves resulting tolerance of approximation, but decreases performance.

For shapes, presented in current bug, an increase in parameters -SM and -DM made it possible to build resulting pipe.
(0100706)
akaftasev (developer)
2021-04-30 18:19

Unfortunately, there no method programmatically determine settings to algorithm and need to determine its manually.
(0100707)
Jerome Caucat (reporter)
2021-04-30 18:27

Thanks I will try the new DRAW.

I cannot change the settings manually for every pipes, the code will have to be generic or automatically adapt its settings...

I'll do more testings.
(0100708)
akaftasev (developer)
2021-04-30 18:42

Jerome Caucat, for your case, was created new bug, because problem, described in current bug differs from yours, and will be solved with another fix.

You can see your bug by link upper in relationships to current bug.
(0100753)
Jerome Caucat (reporter)
2021-05-04 12:55
edited on: 2021-05-04 13:16

For information here are the results of my tests with the DRAW from CR31147 and using buildsweep r -C -S:

Sample 28:
  default: pipe is distorted
  setsweep -FR: fail (not done)
  setsweep -CF: pipe is distorted
  setsweep -CN 1 0 0: pipe is distorted
  setsweep -CN 0 1 0: almost good, pipe is a little distorted
  setsweep -CN 0 0 1: fail (exception Standard_NullObject)
  setsweep -DT: fail (exception Standard_NullObject)

Sample 144:
  default: crash
  setsweep -FR: crash
  setsweep -CF: crash
  setsweep -CN 1 0 0: almost good, pipe is a little distorted
  setsweep -CN 0 1 0: OK, pipe is good
  setsweep -CN 0 0 1: OK, pipe is good
  setsweep -DT: crash

Sample 512:
  default: fail (not done)
  setsweep -FR: fail (exception Standard_NullObject)
  setsweep -CF: fail (not done)
  setsweep -CN 1 0 0: pipe is distorted
  setsweep -CN 0 1 0: almost good, pipe is a little distorted
  setsweep -CN 0 0 1: fail (not done)
  setsweep -DT: pipe is distorted

Concerning setsweepparams: I tried several combinations of -SM [0;5000] and -DM [1;14] with the sample 28 and the default setsweep but I could not find one that worked, it either fails with "not done" or result in a distorted shape.

(0100758)
akaftasev (developer)
2021-05-04 14:03

Branch for review:
OCCT - CR31147
(0100759)
akaftasev (developer)
2021-05-04 14:03

Results of testing:
http://jenkins-test-occt/view/CR31147-master-akaftasev/view/COMPARE/ [^]
(0100780)
kgv (developer)
2021-05-05 13:56
edited on: 2021-05-05 13:58

akaftasev, are there any test cases were forgotten to be pushed to branch?
I see new command on the patch, but not any test using it


By the way - are existing commands really cannot be extended with necessary parameters to avoid creating new one?
New command doesn't validate input parameters and ignores unknown parameters, which contradicts to recommended Draw Harness command behavior.
Please also move command help to command registration instead of obsolete style 'please run command without arguments'.

(0100782)
jgv (developer)
2021-05-05 15:31

Dear Andrey,

Kirill is right: please, do the following:

1. Rebase your branch on current master.
2. Modify existing Draw command "setsweep" instead of creating new command.
3. Add test case: soon I will add the input shape to database with the name bug31147.brep.
(0100793)
git (administrator)
2021-05-06 10:40

Branch CR31147_1 has been created by andrey.kaftasev_159541.

SHA-1: 8bde94d2ce591ebcb9aee9afa345f3b25fbbb22c


Detailed log of new commits:

Author: akaftasev
Date: Thu Apr 29 13:40:58 2021 +0300

    0031147: Modeling Algorithms - BRepOffsetAPI_MakePipeShell null access
    
    Added to Draw command 'setsweep ' posibility to change degmax and segmax parameter manually by '-SM' and '-DM' options
    Added test
(0100795)
Jerome Caucat (reporter)
2021-05-06 13:34

For information I still experience a crash (Segmentation fault in BRepFill_PipeShell::BuildHistory) for the provided sample 144 (profile/spine_144_CR31147) and the newly added sample 101 (test_101.zip).
(0100804)
git (administrator)
2021-05-06 19:47

Branch CR31147_1 has been updated forcibly by andrey.kaftasev_159541.

SHA-1: 0a010671fc62a92c1fd6f5c904b14215e805608e
(0100807)
git (administrator)
2021-05-07 10:14

Branch CR31147_1 has been updated forcibly by andrey.kaftasev_159541.

SHA-1: a3bc100fbd2b8c5cc4a9c84ed22942e1daac132f
(0100867)
kgv (developer)
2021-05-11 10:40

Andrey, even if changing input parameters helps constructing the pipe, it is not OK to allow NULL dereference in case of unfortunate algorithm parameters - please also add necessary NULL checks to the algorithm (cannot say if it should be done at BRepFill_PipeShell::BuildHistory() where crash occurs or somewhere earlier, as I'm not familiar with this code) - instead algorithm should report failure (if it provides such interface) or explicitly raise another exception.
(0100871)
jgv (developer)
2021-05-11 11:25

Andrey, please also add call of the command "errorsweep" in the test case after "buildsweep" - to check the error of approximation.

(0100891)
git (administrator)
2021-05-11 20:04

Branch CR31147_1 has been updated by andrey.kaftasev_159541.

SHA-1: 86ef102a009c0147a7ee0d2d9267aad348d3a1fb


Detailed log of new commits:

Author: akaftasev
Date: Tue May 11 20:04:34 2021 +0300

    Added new condition to prevent crash

(0100910)
Jerome Caucat (reporter)
2021-05-12 10:05

Hi, I just tested the latest commit, the crash is now fixed for the samples 144 and 101, thanks.

I added three other samples still presenting a crash:
- test_177.zip
- test_951.zip
- test_8879.zip

I am using the branch CR31147_1 with CR29645 merged and the -DT/SetDiscreteMode() option.
(0100934)
git (administrator)
2021-05-13 11:12

Branch CR31147_1 has been updated forcibly by andrey.kaftasev_159541.

SHA-1: f822e2a694df7730aba94b3b06c0e46dc670e2b6
(0100935)
kgv (developer)
2021-05-13 11:21

Andrey,
+      if (aVshape.TShape().IsNull())

TopoDS_Shape class has TopoDS_Shape::IsNull() method - no need to access TShape().
(0100938)
git (administrator)
2021-05-13 11:37

Branch CR31147_1 has been updated forcibly by andrey.kaftasev_159541.

SHA-1: 99bb529550ede446ce617828b7818c208122d3a7
(0100945)
jgv (developer)
2021-05-13 14:01

Please correct usage of command "errorsweep" in test case
(0100946)
git (administrator)
2021-05-13 14:04

Branch CR31147_1 has been updated forcibly by andrey.kaftasev_159541.

SHA-1: 6dec9879f4356383d780b880f2ab227a76ac79ba
(0100985)
jgv (developer)
2021-05-14 11:12

Reviewed.

Branches for integration:
OCCT – CR31147_1
Products – NOT
(0101018)
bugmaster (administrator)
2021-05-15 14:02

Combination -
OCCT branch : IR-2021-05-14
master SHA - d1b8120b699dfa46c9899f70430ec45a0c4e4a95
a87b7ddc8cb44606b91e3f37113847c3f5f50fdc
Products branch : IR-2021-05-14 SHA - c56cdc236ba39874bae48cf231ece00c0876d871
was compiled on Linux, MacOS and Windows platforms and tested in optimize mode.

Number of compiler warnings:
No new/fixed warnings

Regressions/Differences/Improvements:
No regressions/differences

CPU differences:
Debian80-64:
OCCT
Total CPU difference: 17874.080000000333 / 17899.800000000352 [-0.14%]
Products
Total CPU difference: 11557.880000000083 / 11563.54000000011 [-0.05%]
Windows-64-VC14:
OCCT
Total CPU difference: 19394.921875 / 19369.625 [+0.13%]
Products
Total CPU difference: 12880.234375 / 12896.03125 [-0.12%]


Image differences :
No differences that require special attention

Memory differences :
No differences that require special attention
(0101027)
git (administrator)
2021-05-15 15:34

Branch CR31147_1 has been deleted by inv.

SHA-1: 6dec9879f4356383d780b880f2ab227a76ac79ba
(0101038)
git (administrator)
2021-05-15 15:34

Branch CR31147 has been deleted by inv.

SHA-1: 7c6032f170e49e65a648dd5bfdb799e49841ac3e

- Related Changesets
occt: master 8d52a74d
Timestamp: 2021-04-29 10:40:58
Author: akaftasev
Committer: bugmaster
Details ] Diff ]
0031147: Modeling Algorithms - BRepOffsetAPI_MakePipeShell null access

Added to Draw command 'setsweep ' posibility to change degmax and segmax parameter manually by '-SM' and '-DM' options
Added test
Added new condition to prevent crash
mod - src/BRepFill/BRepFill_PipeShell.cxx Diff ] File ]
mod - src/BRepTest/BRepTest_SweepCommands.cxx Diff ] File ]
add - tests/pipe/bugs/bug31147 Diff ] File ]

- Issue History
Date Modified Username Field Change
2019-11-10 18:26 Vico Liang New Issue
2019-11-10 18:26 Vico Liang Assigned To => msv
2019-11-10 18:26 Vico Liang File Added: pipeshell-fail.brep
2019-11-10 18:26 Vico Liang File Added: pipeshell-fail.png
2019-11-10 18:27 Vico Liang File Added: pipeshell-fail-shape.png
2019-12-17 13:29 kgv Summary BRepOffsetAPI_MakePipeShell null access => Modeling Algorithms - BRepOffsetAPI_MakePipeShell null access
2020-09-15 12:47 msv Target Version 7.5.0 => 7.6.0*
2021-03-03 12:23 Jerome Caucat Note Added: 0099331
2021-03-03 12:24 Jerome Caucat File Added: spine_28.brep
2021-03-03 12:24 Jerome Caucat File Added: profile_28_1.brep
2021-03-03 12:24 Jerome Caucat File Added: profile_28_2.brep
2021-03-03 12:24 Jerome Caucat File Added: profile_28_3.brep
2021-03-03 12:25 Jerome Caucat File Added: profile_28_4.brep
2021-03-03 12:25 Jerome Caucat File Added: profile_28_5.brep
2021-03-03 12:25 Jerome Caucat File Added: profile_28_6.brep
2021-03-15 16:56 Jerome Caucat Note Added: 0099528
2021-03-15 16:59 Jerome Caucat File Added: spine_28_7.5.0.brep
2021-03-15 16:59 Jerome Caucat File Added: profile_28_1_7.5.0.brep
2021-03-15 16:59 Jerome Caucat File Added: profile_28_2_7.5.0.brep
2021-03-15 16:59 Jerome Caucat File Added: profile_28_3_7.5.0.brep
2021-03-15 16:59 Jerome Caucat File Added: profile_28_4_7.5.0.brep
2021-03-15 17:00 Jerome Caucat File Added: profile_28_5_7.5.0.brep
2021-03-15 17:00 Jerome Caucat File Added: profile_28_6_7.5.0.brep
2021-04-27 17:20 szy Note Added: 0100617
2021-04-27 17:20 szy Assigned To msv => akaftasev
2021-04-27 17:20 szy Status new => assigned
2021-04-27 17:22 szy Note Edited: 0100617 View Revisions
2021-04-29 11:30 akaftasev Relationship added related to 0031984
2021-04-29 13:42 git Note Added: 0100663
2021-04-30 10:40 Jerome Caucat File Added: spine_144_CR31147.brep
2021-04-30 10:40 Jerome Caucat File Added: profile_144_CR31147.brep
2021-04-30 10:41 Jerome Caucat Note Added: 0100685
2021-04-30 12:56 akaftasev Note Added: 0100694
2021-04-30 13:09 git Note Added: 0100696
2021-04-30 13:10 git Note Added: 0100697
2021-04-30 13:40 Jerome Caucat Note Added: 0100698
2021-04-30 16:21 Jerome Caucat File Added: test_512.zip
2021-04-30 16:21 Jerome Caucat Note Added: 0100702
2021-04-30 18:13 akaftasev Note Added: 0100705
2021-04-30 18:19 akaftasev Note Added: 0100706
2021-04-30 18:27 Jerome Caucat Note Added: 0100707
2021-04-30 18:35 akaftasev Relationship added related to 0032343
2021-04-30 18:42 akaftasev Note Added: 0100708
2021-05-04 12:55 Jerome Caucat Note Added: 0100753
2021-05-04 13:16 Jerome Caucat Note Edited: 0100753 View Revisions
2021-05-04 13:51 akaftasev Assigned To akaftasev => jgv
2021-05-04 13:51 akaftasev Status assigned => resolved
2021-05-04 13:51 akaftasev Steps to Reproduce Updated View Revisions
2021-05-04 14:03 akaftasev Note Added: 0100758
2021-05-04 14:03 akaftasev Note Added: 0100759
2021-05-05 13:56 kgv Note Added: 0100780
2021-05-05 13:58 kgv Note Edited: 0100780 View Revisions
2021-05-05 15:31 jgv Note Added: 0100782
2021-05-05 15:31 jgv Status resolved => assigned
2021-05-05 15:31 jgv Assigned To jgv => akaftasev
2021-05-06 10:40 git Note Added: 0100793
2021-05-06 13:34 Jerome Caucat File Added: test_101.zip
2021-05-06 13:34 Jerome Caucat Note Added: 0100795
2021-05-06 19:47 git Note Added: 0100804
2021-05-07 10:14 git Note Added: 0100807
2021-05-07 13:17 akaftasev Assigned To akaftasev => jgv
2021-05-07 13:17 akaftasev Status assigned => resolved
2021-05-07 13:17 akaftasev Steps to Reproduce Updated View Revisions
2021-05-11 10:40 kgv Note Added: 0100867
2021-05-11 11:25 jgv Note Added: 0100871
2021-05-11 11:25 jgv Assigned To jgv => akaftasev
2021-05-11 11:25 jgv Status resolved => assigned
2021-05-11 20:04 git Note Added: 0100891
2021-05-12 10:04 Jerome Caucat File Added: test_177.zip
2021-05-12 10:04 Jerome Caucat File Added: test_951.zip
2021-05-12 10:04 Jerome Caucat File Added: test_8879.zip
2021-05-12 10:05 Jerome Caucat Note Added: 0100910
2021-05-13 11:12 git Note Added: 0100934
2021-05-13 11:13 akaftasev Assigned To akaftasev => jgv
2021-05-13 11:13 akaftasev Status assigned => resolved
2021-05-13 11:21 kgv Note Added: 0100935
2021-05-13 11:37 git Note Added: 0100938
2021-05-13 14:01 jgv Note Added: 0100945
2021-05-13 14:01 jgv Assigned To jgv => akaftasev
2021-05-13 14:01 jgv Status resolved => assigned
2021-05-13 14:04 git Note Added: 0100946
2021-05-13 14:05 akaftasev Assigned To akaftasev => jgv
2021-05-13 14:05 akaftasev Status assigned => resolved
2021-05-14 11:12 jgv Note Added: 0100985
2021-05-14 11:12 jgv Assigned To jgv => akaftasev
2021-05-14 11:12 jgv Status resolved => assigned
2021-05-14 11:12 jgv Assigned To akaftasev => msv
2021-05-14 11:12 jgv Status assigned => resolved
2021-05-14 11:12 jgv Assigned To msv => bugmaster
2021-05-14 11:12 jgv Status resolved => reviewed
2021-05-15 14:02 bugmaster Note Added: 0101018
2021-05-15 14:02 bugmaster Status reviewed => tested
2021-05-15 14:09 bugmaster Test case number => pipe/bugs/bug31147
2021-05-15 14:16 bugmaster Changeset attached => occt master 8d52a74d
2021-05-15 14:16 bugmaster Status tested => verified
2021-05-15 14:16 bugmaster Resolution open => fixed
2021-05-15 15:34 git Note Added: 0101027
2021-05-15 15:34 git Note Added: 0101038


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