There is an error in the latest jdk6/jdk tree which can lead it to
misreporting information passed to the JVM in the jdk_version_info
structure. In particular, this has been observed to cause the JVM GC
code in versions later than jdk6-b28 to fail to notify discovered
Reference instances to the JDK.
The error is in function JDK_GetVersionInfo0 in file
jdk/src/share/native/common/jdk_util.c at line 79
memset(info, 0, sizeof(info_size));
The size of the struct be zeroed (info) is info_size (24 in the latest
jdk6/hotspot tree). The line above only zeroes the first 8 bytes. The
correct code is
memset(info, 0, info_size);
regards,
Andrew Dinn
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