pytorch

17567e5b - [pytorch@arvr/windows] Fix pytorch build/import on Windows @ ovrsource (#97193)

[pytorch@arvr/windows] Fix pytorch build/import on Windows @ ovrsource (#97193) Summary: - Importing torch on Windows can cause a crash within python. - The problem was introduced by the change in `Module.cpp` from https://github.com/pytorch/pytorch/pull/94927 - The cause is that a call to `PyObject* initModule(void)` declared with a `__declspec(dllimport)` specifier can lead to a crash if the definition doesn't include the `__declspec(dllexport)` counterpart. - To mitigate the problem without introducing customized macros and changing the build system (note, `#include <c10/macros/Export.h>` doesn't work in `stub.c`) is to simply remove the `__declspec(dllimport)` specifier. - According to https://web.archive.org/web/20140808231508/http://blogs.msdn.com/b/russellk/archive/2005/03/20/399465.aspx and other sources, `__declspec(dllimport)` only leads to some code optimizations, and since `initModule()` is only called once at startup, this is marginal. - Note: the `stub_with_flatbuffer.c` file counterpart wasn't affected, therefore, not touched. Differential Revision: D44236183 Pull Request resolved: https://github.com/pytorch/pytorch/pull/97193 Approved by: https://github.com/ezyang