While debugging something else I hit the following failure with $j170/fastdebug/bin/java -XX:+PrintNativeNMethods -client -Xcomp foo

# after -XX: or in .hotspotrc:  SuppressErrorAt=/relocInfo.cpp:169
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  Internal Error (/tmp/workspace/jdk7-2-build-solaris-i586-product/jdk7/hotspot/src/share/vm/code/relocInfo.cpp:169), pid=15503, tid=2
#  assert(limit == NULL || limit <= nm->code_end()) failed: in bounds
#
# JRE version: 7.0-b147
# Java VM: Java HotSpot(TM) Client VM (21.0-b17-fastdebug compiled mode solaris-x86 )
# Core dump written. Default location: /net/smite.us.oracle.com/export/ws/metadata/core or core.15503
#
# An error report file with more information is saved as:
# /net/smite.us.oracle.com/export/ws/metadata/hs_err_pid15503.log
#
# If you would like to submit a bug report, please visit:
#   http://bugreport.sun.com/bugreport/crash.jsp
#

The problem seems to be garbage in the end of the code section in the native wrapper and the fact that the last CodeSection isn't aligned, so it attempts to disassemble off the end up buffer.