我正在尝试对 Pointcloud 进行一些操作，但是在调用 VoxelDownSample 函数时，我收到了分段错误信号。我看到问题是程序想要分配一些天文数量的数据，但我不知道它来自哪里，因为实际的 PointCloud 对象大小是 120。
代码：
open3d::geometry::PointCloud open3d_source_original;
open3d::geometry::PointCloud open3d_source_down;
createPointCloud(open3d_source_original);
open3d_source_down = *open3d_source_original.VoxelDownSample(0.01);
createPointCloud 是我的函数，它从 csv 文件创建 PointCloud，它工作正常。
gdb 输出：
#0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#1 0x00007ffff6eb4921 in __GI_abort () at abort.c:79
#2 0x00007ffff7ad6957 in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#3 0x00007ffff7adcae6 in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#4 0x00007ffff7adcb21 in std::terminate() () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#5 0x00007ffff7adcd54 in __cxa_throw () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#6 0x00007ffff7b05012 in std::__throw_bad_alloc() () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#7 0x0000555555563476 in __gnu_cxx::new_allocator<Eigen::Matrix<double, 3, 1, 0, 3, 1> >::allocate(unsigned long, void const*) ()
#8 0x0000555555562bec in std::allocator_traits<std::allocator<Eigen::Matrix<double, 3, 1, 0, 3, 1> > >::allocate(std::allocator<Eigen::Matrix<double, 3, 1, 0, 3, 1> >&, unsigned long) ()
#9 0x0000555555562088 in std::_Vector_base<Eigen::Matrix<double, 3, 1, 0, 3, 1>, std::allocator<Eigen::Matrix<double, 3, 1, 0, 3, 1> > >::_M_allocate(unsigned long) ()
#10 0x00005555555613ac in Eigen::Matrix<double, 3, 1, 0, 3, 1>* std::vector<Eigen::Matrix<double, 3, 1, 0, 3, 1>, std::allocator<Eigen::Matrix<double, 3, 1, 0, 3, 1> > >::_M_allocate_and_copy<__gnu_cxx::__normal_iterator<Eigen::Matrix<double, 3, 1, 0, 3, 1> const*, std::vector<Eigen::Matrix<double, 3, 1, 0, 3, 1>, std::allocator<Eigen::Matrix<double, 3, 1, 0, 3, 1> > > > >(unsigned long, __gnu_cxx::__normal_iterator<Eigen::Matrix<double, 3, 1, 0, 3, 1> const*, std::vector<Eigen::Matrix<double, 3, 1, 0, 3, 1>, std::allocator<Eigen::Matrix<double, 3, 1, 0, 3, 1> > > >, __gnu_cxx::__normal_iterator<Eigen::Matrix<double, 3, 1, 0, 3, 1> const*, std::vector<Eigen::Matrix<double, 3, 1, 0, 3, 1>, std::allocator<Eigen::Matrix<double, 3, 1, 0, 3, 1> > > >) ()
#11 0x00005555555606e2 in std::vector<Eigen::Matrix<double, 3, 1, 0, 3, 1>, std::allocator<Eigen::Matrix<double, 3, 1, 0, 3, 1> > >::operator=(std::vector<Eigen::Matrix<double, 3, 1, 0, 3, 1>, std::allocator<Eigen::Matrix<double, 3, 1, 0, 3, 1> > > const&) ()
#12 0x000055555555fcfa in open3d::geometry::PointCloud::operator=(open3d::geometry::PointCloud const&) ()
#13 0x000055555555f400 in main ()
Valgrind 输出：
==14534== Invalid read of size 8
==14534== at 0x114D59: std::vector<Eigen::Matrix<double, 3, 1, 0, 3, 1>, std::allocator<Eigen::Matrix<double, 3, 1, 0, 3, 1> > >::begin() const (in /home/rufus/CLionProjects/isolatedSegFault/build/isolatedSegFault)
==14534== by 0x1147EA: std::vector<Eigen::Matrix<double, 3, 1, 0, 3, 1>, std::allocator<Eigen::Matrix<double, 3, 1, 0, 3, 1> > >::operator=(std::vector<Eigen::Matrix<double, 3, 1, 0, 3, 1>, std::allocator<Eigen::Matrix<double, 3, 1, 0, 3, 1> > > const&) (in /home/rufus/CLionProjects/isolatedSegFault/build/isolatedSegFault)
==14534== by 0x113CF9: open3d::geometry::PointCloud::operator=(open3d::geometry::PointCloud const&) (in /home/rufus/CLionProjects/isolatedSegFault/build/isolatedSegFault)
==14534== by 0x1133FF: main (in /home/rufus/CLionProjects/isolatedSegFault/build/isolatedSegFault)
==14534== Address 0x61da940 is 0 bytes after a block of size 112 alloc'd
==14534== at 0x4C3217F: operator new(unsigned long) (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==14534== by 0x12C358: allocate (new_allocator.h:111)
==14534== by 0x12C358: allocate (alloc_traits.h:436)
==14534== by 0x12C358: __allocate_guarded<std::allocator<std::_Sp_counted_ptr_inplace<open3d::geometry::PointCloud, std::allocatoropen3d::geometry::PointCloud, (__gnu_cxx::_Lock_policy)2> > > (allocated_ptr.h:104)
==14534== by 0x12C358: __shared_count<open3d::geometry::PointCloud, std::allocatoropen3d::geometry::PointCloud > (shared_ptr_base.h:635)
==14534== by 0x12C358: __shared_ptr<std::allocatoropen3d::geometry::PointCloud > (shared_ptr_base.h:1295)
==14534== by 0x12C358: shared_ptr<std::allocatoropen3d::geometry::PointCloud > (shared_ptr.h:344)
==14534== by 0x12C358: allocate_shared<open3d::geometry::PointCloud, std::allocatoropen3d::geometry::PointCloud > (shared_ptr.h:691)
==14534== by 0x12C358: make_sharedopen3d::geometry::PointCloud (shared_ptr.h:707)
==14534== by 0x12C358: open3d::geometry::PointCloud::VoxelDownSample(double) const (PointCloud.cpp:306)
==14534== by 0x1133DB: main (in /home/rufus/CLionProjects/isolatedSegFault/build/isolatedSegFault)
==14534==
==14534==
==14534== HEAP SUMMARY:
==14534== in use at exit: 8 bytes in 1 blocks
==14534== total heap usage: 19 allocs, 18 frees, 107,576 bytes allocated
==14534==
==14534== LEAK SUMMARY:
==14534== definitely lost: 0 bytes in 0 blocks
==14534== indirectly lost: 0 bytes in 0 blocks
==14534== possibly lost: 0 bytes in 0 blocks
==14534== still reachable: 8 bytes in 1 blocks
==14534== suppressed: 0 bytes in 0 blocks
==14534== Rerun with --leak-check=full to see details of leaked memory
==14534==
==14534== For counts of detected and suppressed errors, rerun with: -v
==14534== Use --track-origins=yes to see where uninitialised values come from
==14534== ERROR SUMMARY: 6 errors from 6 contexts (suppressed: 0 from 0)
Operating system: Ubuntu 18.04
Open3D build from source
Compiler version: gcc 7.5
我试图从 Eigen 更改宏并更改编译器，但没有任何效果。