Division assignment operator (/=) is not exported properly to Python3

The minimal example I have is for g++8.3.0 and boost1.67 on Ubuntu19.04 (although I have tested boost1.74 on a CentOS7.8 platform).

My understanding of the issue is that when the operator "/=" is exported for Python3, it is binded to \_\_idiv__ and not \_\_itruediv__, therefore causing a crash upon runtime. For Python2, there is no problem observed.

The problem solved by explicitly doing .def("\_\_itruediv__", &Foo::operator/=). Is this a desired behaviour?

PS:
Compiling on Ubuntu19.04 as:
g++ foo.cpp -Wall -Wextra -shared -fPIC -o myModule.so -Wfatal-errors -I/usr/include/python3.7 -lboost_python3 (boost1.67 library and boost1.67-dev installed from packages).

最小复现是 foo.cpp；首先使用所述的 Boost 和 Python 3 设置编译它，并检查导出 Foo::operator/= 如何映射到 __idiv__ 而不是 __itruediv__。完成的标准是 Python 3 调用正确的原地真除法方法且不会发生运行时崩溃，同时 Python 2 的行为保持不变。

由索引模型根据 Issue 内容生成。