Hello Robert, if you started the crashing application already with gdb then, after the crash, please also call the "bt" command to get a complete call stack. More information in [1]. And this is most helpful, if the debug packages got installed before, e.g. freecad-dbgsym and at least the last frame shows libTKG2d.so.10 - therefore liboce-modeling10-dbgsym.
>From that single line the crash did happen in src/Geom2d/Geom2d_Curve.cxx, Line 80. If you can reproduce the crash, probably you can give a more detailed description which exact actions lead to this crash? Kind regards, Bernhard [1] https://wiki.debian.org/HowToGetABacktrace (gdb) disassemble /m Geom2d_Curve::Value(double) const Dump of assembler code for function Geom2d_Curve::Value(double) const: 78 { 0x00007fff7ea94d20 <+0>: sub $0x28,%rsp 0x00007fff7ea94d28 <+8>: mov %fs:0x28,%rax 0x00007fff7ea94d31 <+17>: mov %rax,0x18(%rsp) 0x00007fff7ea94d36 <+22>: xor %eax,%eax 79 gp_Pnt2d P; 80 D0(U,P); 0x00007fff7ea94d38 <+24>: mov (%rdi),%rax <-- this was probably the instruction of the crash. 0x00007fff7ea94d3b <+27>: mov %rsp,%rsi 0x00007fff7ea94d49 <+41>: callq *0x90(%rax) 81 return P; 0x00007fff7ea94d5d <+61>: movsd (%rsp),%xmm0 0x00007fff7ea94d62 <+66>: movsd 0x8(%rsp),%xmm1 82 } 0x00007fff7ea94d4f <+47>: mov 0x18(%rsp),%rax 0x00007fff7ea94d54 <+52>: xor %fs:0x28,%rax 0x00007fff7ea94d68 <+72>: jne 0x7fff7ea94d6f <Geom2d_Curve::Value(double) const+79> 0x00007fff7ea94d6a <+74>: add $0x28,%rsp 0x00007fff7ea94d6e <+78>: retq 0x00007fff7ea94d6f <+79>: callq 0x7fff7ea851c0 <__stack_chk_fail@plt> End of assembler dump. (gdb) list Geom2d_Curve::Value 73 //function : Value 74 //purpose : 75 //======================================================================= 76 77 gp_Pnt2d Geom2d_Curve::Value(const Standard_Real U)const 78 { 79 gp_Pnt2d P; 80 D0(U,P); 81 return P; 82 }
