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IDProjectCategoryView StatusDate SubmittedLast Update
0030224Community[OCCT] OCCT:Data Exchangepublic2018-10-09 17:582019-03-05 10:13
Reportermmrozek 
Assigned Tobugmaster 
PrioritynormalSeveritycrash 
StatusclosedResolutionduplicate 
PlatformOSOS Version
Product Version[OCCT] 7.3.0 
Target Version[OCCT] 7.4.0Fixed in Version 
Summary0030224: StlAPI_Writer crashes on STEP converted file
DescriptionWhile saving the shape read from an attached STEP file (and only for that specific one), my simple app crashes.

Debug infos:

backtrace:
#0 0x00007ffff730443c in NCollection_Array1<gp_Pnt>::Lower (this=0x18) at /home/michal/Downloads/opencascade-7.3.0/src/NCollection/NCollection_Array1.hxx:264
No locals.
0000001 0x00007ffff6d75e23 in StlAPI_Writer::Write (this=0x7fffffffd23f, theShape=..., theFileName=0x697500 "CO3DP0000327177_I3-PS-02_25025_86cm3.stl") at /home/michal/Downloads/opencascade-7.3.0/src/StlAPI/StlAPI_Writer.cxx:75
        aNodeIter = 63
        aTriangulation = {entity = 0x0}
        aNodes = <error reading variable>
        aTriangles = <error reading variable>
        anOrientation = TopAbs_FORWARD
        aLoc = {myItems = {myNode = {entity = 0x0}}}
        aTrsf = {scale = 1, shape = gp_Identity, matrix = {matrix = {{1, 0, 0}, {0, 1, 0}, {0, 0, 1}}}, loc = {x = 0, y = 0, z = 0}}
        anExpSF = {myStack = 0x5d2f250, myTop = 2, mySizeOfStack = 20, myShape = {myTShape = {entity = 0x71d9e0}, myLocation = {myItems = {myNode = {entity = 0x0}}}, myOrient = TopAbs_FORWARD}, hasMore = true, toFind = TopAbs_FACE, toAvoid = TopAbs_SHAPE}
        aNbNodes = 837714
        aNbTriangles = 1419950
        aMesh = {entity = 0x568c0d0}
        aNodeOffset = 281654
        aTriangleOffet = 490093
        aPath = {myNode = {mystring = 0x7fffffffd130 "H\257\274\232\362\327z>\001\001", mylength = -11680}, myUserName = {mystring = 0x3fe0000000000000 <error: Cannot access memory at address 0x3fe0000000000000>, mylength = -1917273401}, myPassword = {mystring = 0x3e7ad7f29abcaf48 <error: Cannot access memory at address 0x3e7ad7f29abcaf48>, mylength = 16777473}, myDisk = {mystring = 0x7ffff7d25238 <vtable for Standard_Transient+16> "\370\223\244\367\377\177", mylength = 0}, myTrek = {mystring = 0x0, mylength = 0}, myName = {mystring = 0x7fff00000000 <error: Cannot access memory at address 0x7fff00000000>, mylength = -12031}, myExtension = {mystring = 0x7ffff7d24b28 <vtable for NCollection_BaseMap+16> "\270\231\246\367\377\177", mylength = 0}, myUNCFlag = false, mySysDep = OSD_Unknown}
0000002 0x00007ffff6d728c7 in StlAPI::Write (theShape=..., theFile=0x697500 "CO3DP0000327177_I3-PS-02_25025_86cm3.stl", theAsciiMode=false) at /home/michal/Downloads/opencascade-7.3.0/src/StlAPI/StlAPI.cxx:30
        aWriter = {myASCIIMode = false}
#3 0x000000000043af32 in step2stl (in="CO3DP0000327177_I3-PS-02_25025_86cm3.stp", out="CO3DP0000327177_I3-PS-02_25025_86cm3.stl") at /home/michal/Documents/Projects/step2stl/src/lib/converter.cpp:15
        model = {shape = {myTShape = {entity = 0x71d9e0}, myLocation = {myItems = {myNode = {entity = 0x0}}}, myOrient = TopAbs_FORWARD}}
#4 0x000000000043ae0d in main (argc=3, argv=0x7fffffffd478) at /home/michal/Documents/Projects/step2stl/src/main.cpp:5
No locals.


registers:
rax 0x18 24
rbx 0x0 0
rcx 0x0 0
rdx 0x0 0
rsi 0x1a91398 27857816
rdi 0x18 24
rbp 0x7fffffffd390 0x7fffffffd390
rsp 0x7fffffffd310 0x7fffffffd310
r8 0x5d2f250 97710672
r9 0x232 562
r10 0x0 0
r11 0x7ffff6d766a4 140737334699684
r12 0x43acb0 4435120
r13 0x7fffffffd470 140737488344176
r14 0x0 0
r15 0x0 0
rip 0x43ae0d 0x43ae0d <main(int, char const**)+119>
eflags 0x10202 [ IF RF ]
cs 0x33 51
ss 0x2b 43
ds 0x0 0
es 0x0 0
fs 0x0 0
gs 0x0 0


current instructions:
=> 0x43ae0d <main(int, char const**)+119>: mov ebx,eax
   0x43ae0f <main(int, char const**)+121>: nop
   0x43ae10 <main(int, char const**)+122>: lea rax,[rbp-0x40]
   0x43ae14 <main(int, char const**)+126>: mov rdi,rax
   0x43ae17 <main(int, char const**)+129>: call 0x43a8c0 <_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED1Ev@plt>
   0x43ae1c <main(int, char const**)+134>: lea rax,[rbp-0x11]
   0x43ae20 <main(int, char const**)+138>: mov rdi,rax
   0x43ae23 <main(int, char const**)+141>: call 0x43aca0 <_ZNSaIcED1Ev@plt>
   0x43ae28 <main(int, char const**)+146>: lea rax,[rbp-0x70]
   0x43ae2c <main(int, char const**)+150>: mov rdi,rax
   0x43ae2f <main(int, char const**)+153>: call 0x43a8c0 <_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED1Ev@plt>
   0x43ae34 <main(int, char const**)+158>: lea rax,[rbp-0x41]
   0x43ae38 <main(int, char const**)+162>: mov rdi,rax
   0x43ae3b <main(int, char const**)+165>: call 0x43aca0 <_ZNSaIcED1Ev@plt>
   0x43ae40 <main(int, char const**)+170>: mov eax,ebx
   0x43ae42 <main(int, char const**)+172>: jmp 0x43ae8c <main(int, char const**)+246>


threads backtrace:

Thread 1 (Thread 0x7ffff7fcd740 (LWP 20508)):
#0 0x00007ffff730443c in NCollection_Array1<gp_Pnt>::Lower (this=0x18) at /home/michal/Downloads/opencascade-7.3.0/src/NCollection/NCollection_Array1.hxx:264
0000001 0x00007ffff6d75e23 in StlAPI_Writer::Write (this=0x7fffffffd23f, theShape=..., theFileName=0x697500 "CO3DP0000327177_I3-PS-02_25025_86cm3.stl") at /home/michal/Downloads/opencascade-7.3.0/src/StlAPI/StlAPI_Writer.cxx:75
0000002 0x00007ffff6d728c7 in StlAPI::Write (theShape=..., theFile=0x697500 "CO3DP0000327177_I3-PS-02_25025_86cm3.stl", theAsciiMode=false) at /home/michal/Downloads/opencascade-7.3.0/src/StlAPI/StlAPI.cxx:30
#3 0x000000000043af32 in step2stl (in="CO3DP0000327177_I3-PS-02_25025_86cm3.stp", out="CO3DP0000327177_I3-PS-02_25025_86cm3.stl") at /home/michal/Documents/Projects/step2stl/src/lib/converter.cpp:15
#4 0x000000000043ae0d in main (argc=3, argv=0x7fffffffd478) at /home/michal/Documents/Projects/step2stl/src/main.cpp:5
Steps To ReproduceRead the file using STEPControl_Reader, transfer roots, get one shape from it and try to save it using StlAPI::Write (theAsciiMode=Standard_False).
TagsNo tags attached.
Test case number
Attached Files? file icon CO3DP0000357844_I6-PS-02_24_13cm3.stp (5,074 bytes) 2018-10-09 17:58
? file icon gdb.bt (5,566 bytes) 2018-10-09 17:59

- Relationships
duplicate of 0030389verifiedapn Open CASCADE Data Exchange - StlAPI_Writer does not check if the face has triangulation 

-  Notes
(0080977)
mmrozek (reporter)
2018-11-08 17:27

It seems that StlApi_Writer.cpp just lacks the null check in the 73 line as it is in the previous loop on the shape. So simply adding "if (! aTriangulation.IsNull())" does it's job.
(0082538)
kgv (developer)
2019-03-02 23:39

Please close as duplicate of already fixed 0030389.

- Issue History
Date Modified Username Field Change
2018-10-09 17:58 mmrozek New Issue
2018-10-09 17:58 mmrozek Assigned To => gka
2018-10-09 17:58 mmrozek File Added: CO3DP0000357844_I6-PS-02_24_13cm3.stp
2018-10-09 17:59 mmrozek File Added: gdb.bt
2018-11-08 17:27 mmrozek Note Added: 0080977
2019-03-02 23:38 kgv Relationship added duplicate of 0030389
2019-03-02 23:39 kgv Note Added: 0082538
2019-03-02 23:39 kgv Assigned To gka => bugmaster
2019-03-02 23:39 kgv Status new => feedback
2019-03-02 23:39 kgv Resolution open => duplicate
2019-03-02 23:39 kgv Target Version => 7.4.0
2019-03-05 10:13 bugmaster Status feedback => closed


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