Several instances of function pointers in jdk.crypto.cryptoki are marked with the dllimport attribute, which should only be applied to symbol declarations, as stated in the official documentation:

"A program that uses public symbols defined by a DLL is said to import them. When you create header files for applications that use your DLLs to build with, use __declspec(dllimport) on the declarations of the public symbols. The keyword __declspec(dllimport) works whether you export with .def files or with the __declspec(dllexport) keyword."

In addition to being incorrect, at least on the versions of Visual C++ the JDK supports today, it is also redundant; Typically they are used to avoid an indirect stub that jumps to the proper entry in the import address table, but usage of these typedefs involves loading the address of a function and directly (Usually through GetProcAddress) and assigning it to the pointer before immediately dispatching when called, which bypasses this procedure entirely and making the attribute pointless.