RFR: 8289275: Remove incorrect __declspec(dllimport) attributes from pointers in jdk.crypto.cryptoki [v4]
Valerie Peng
valeriep at openjdk.org
Wed Jul 20 00:01:46 UTC 2022
On Thu, 14 Jul 2022 02:48:07 GMT, Julian Waters <jwaters at openjdk.org> wrote:
>> Several instances of function pointers in jdk.crypto.cryptoki are marked with the dllimport attribute, which should only be applied to symbol declarations, of which a typedef'd function pointer is not. This would only be useful if a function pointer defined in the linked dll is desired to be imported, not if the pointer itself is created locally and used to store a function address. 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, even in other cases it would simply be set to the address of a function anyway) assigning it to the pointer before immediately dispatching when called, which bypasses this procedure entirely and makes the attribute pointless.
>
> Julian Waters has updated the pull request incrementally with one additional commit since the last revision:
>
> Revert changes to pkcs11.h
Marked as reviewed by valeriep (Reviewer).
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PR: https://git.openjdk.org/jdk/pull/9353
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