Please review this change to undo the (small) portion of JDK-8238281 [1] related to the HotSpot offset_of macro for gcc/clang. That change should not have been made. See CR for details.
I did not reinstate the redefinition of offsetof; we shouldn't be using that macro, and having the warning enabled will catch questionable cases. (I also considered but didn’t poison it.) CR: https://bugs.openjdk.java.net/browse/JDK-8239357 [1] https://bugs.openjdk.java.net/browse/JDK-8238281 Webrev: https://cr.openjdk.java.net/~kbarrett/8239357/open.00/ Testing: mach5 tier1 With a temporary change to use offsetof with a non-standard-layout class, verified the expected build failures occur with gcc and clang.
