Shapely: 来自 LineString.interpolate() 的分段错误

@snorfalorpagus ，给你：

预期行为和实际行为。

尝试沿LINESTRING EMPTY对象插入一个点时应该抛出回溯或警告，但会使内核崩溃。

重现问题的步骤

• 导致死内核的笔记本中的.png问题报告结束）
• 此代码块（如下）导致分段错误：

# python shapely_interpolate_segmentation_fault.py
import faulthandler
faulthandler.enable()
from shapely.geometry import Point, LineString
test_line = LineString(((0,0), (1,1), (2,1)))
print(test_line)
empty_line = test_line.parallel_offset(10., side='right')
print(empty_line)
empty_line.interpolate(.5, normalized=True)

$ python shapely_interpolate_segmentation_fault.py
LINESTRING (0 0, 1 1, 2 1)
LINESTRING EMPTY
Fatal Python error: Segmentation fault

Current thread 0x000000010ce7f5c0 (most recent call first):
  File "/Users/user/miniconda3/envs/py3_at1866/lib/python3.6/site-packages/shapely/linref.py", line 22 in __call__
  File "/Users/user/miniconda3/envs/py3_at1866/lib/python3.6/site-packages/shapely/geometry/base.py", line 777 in interpolate
  File "/Users/user/miniconda3/envs/py3_at1866/lib/python3.6/site-packages/shapely/impl.py", line 37 in wrapper
  File "shapely_interpolate_segmentation_fault.py", line 9 in <module>
Segmentation fault: 11

操作系统

• Mac OS X 10.14

匀称的版本和出处

• 1.6b4 从conda