[7u40] Request for review: [macosx] jawt_md.h shipped with jdk is outdated

[David DeHaven]

> Hi David,
> 
> The fix looks good to me. Only one question:
> 
> src/macosx/javavm/export/jni_md.h
>>  29 #define JNIEXPORT
> 
> Does the empty #define imply that when building a jni lib on Mac, it should export all of its symbols by default?

It depends on gcc's visibility setting, but yes, by default all symbols are exported.

JDK8 has a better jni_md.h that sets JNIEXPORT to __attribute__(visibility(("default"))). That change should be backported, but should probably need to be done under a different bug ID. I suppose I could sneak it in here :)

-DrD-