Patch for error in jdk_version_info reporting at jdk_util.c:79

[Andrew Hughes]

----- Original Message -----
> 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
> -----------
> 

This should be backported. It fixes this along with other such issues:

changeset:   3029:871cffb21423
user:        alanb
date:        Thu Oct 07 14:36:17 2010 +0100
summary:     6989466: Miscellaneous compiler warnings in java/lang, java/util, java/io, sun/misc native code

http://hg.openjdk.java.net/jdk7/jdk7/jdk/rev/871cffb21423
-- 
Andrew :)

Free Java Software Engineer
Red Hat, Inc. (http://www.redhat.com)

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