JVM crashes in the class loader:

Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
C [libc.so.6+0x6785c] memcpy+0x1c
V [libjvm.so+0x1766e3]
V [libjvm.so+0x178956]
V [libjvm.so+0x36fa6e]
V [libjvm.so+0x281a73]
V [libjvm.so+0x2662e0]
C [libjava.so+0xb581] Java_java_lang_ClassLoader_defineClass1+0x1e1
J java.lang.ClassLoader.defineClass1(Ljava/lang/String;[BIILjava/security/ProtectionDomain;Ljava/lang/String;)Ljava/lang/Class;
J java.lang.ClassLoader.defineClass(Ljava/lang/String;[BIILjava/security/ProtectionDomain;)Ljava/lang/Class;
...

The crash is observed in JDK 7-b09 and JDK 6u1-b06 under Linux and Windows. Solaris has not been tested.