C函数返回但python ctypes崩溃

如何解决C函数返回但python ctypes崩溃

我将一些c函数编译成一个dll。以下功能是一个示例：

typedef struct {
    faces_array* faces_arr;
    vert_array* verts_arr;
    size_t added; 
    location3d max_values; 
    location3d min_values; 
}mesh;

void init_mesh(mesh* m,const size_t added,const size_t initial_size){ //initial_size is added by mistake,will be deleted
    printf("entered function sucessfully \n");
    faces_array* faces_arr;
    printf("face array \n");
    faces_arr-> faces = malloc(added * sizeof(triFace));
    printf("memory allocated \n");
    faces_arr->capacity_faces = added;
    printf("capacity changed \n");
    faces_arr->num_faces = 0;

    vert_array* verts_arr;
    verts_arr->verts = malloc(added*sizeof(vertex));
    verts_arr->capacity_verts = added;
    verts_arr->num_verts = 0;

    m->added = added;
    m->faces_arr = faces_arr;
    m->verts_arr = verts_arr;
    printf("exited function sucessfully \n");
}

我使用ctypes从python调用此函数：

from ctypes import *
class mesh(Structure):
    _fields_ = [
    ('faces_arr',POINTER(faces_array)),('verts_arr',POINTER(vert_array)),('added',c_size_t ),('max_values',location3d ),('min_values',location3d )]
libc = CDLL('./meshing.dll')
init_mesh = lib.__getattr__('init_mesh')
init_mesh.restype = None
init_mesh.argtypes = [POINTER(mesh),c_size_t,c_size_t]
m = mesh()
init_mesh(byref(m),c_size_t(100),c_size_t(100))

当我运行python脚本时，我看到最后由c函数打印的exited function sucessfully，表明该函数可以正常工作，但是python不能继续工作，我不知道为什么发生。 （注意：我没有将所有结构都放在此处的代码中，以免问题变得太大。）