Reviewer needed: fixed segfault in IcedTea7-hotspot

[Pavel Tisnovsky]

Greetings,

I'd like to add fix in hotspot code created by Andrew Haley to
IcedTea7-hotspot.

Two issues which are corrected by this fix are discussed in following
thread:
http://mail.openjdk.java.net/pipermail/hotspot-dev/2011-August/004338.html


Here's ChangeLog entry for IcedTea7-HEAD:

2011-08-02  Andrew Haley  <aph at redhat.com>

        Fixed two bugs in src/share/vm/runtime/os.cpp
        which caused random segfaults due to buffer
        overflow and incorrect usage of int variable
        instead of char (byte) one.
        * Makefile.am:
        (HOTSPOT_CHANGESET): Updated.
        (HOTSPOT_SHA256SUM): Likewise.


Can anybody please review this change?

Thank you in advance,
Pavel
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