hg: panama/dev: 8211277: Exception when dereferencing null pointer should be more specific

[maurizio.cimadamore at oracle.com]

Changeset: 32e0052712b1
Author:    mcimadamore
Date:      2018-10-01 13:32 +0100
URL:       http://hg.openjdk.java.net/panama/dev/rev/32e0052712b1

8211277: Exception when dereferencing null pointer should be more specific
Reviewed-by: sundar
Contributed-by: jbvernee at xs4all.nl

! src/java.base/share/classes/java/foreign/memory/Pointer.java
! src/java.base/share/classes/jdk/internal/foreign/ScopeImpl.java
! src/java.base/share/classes/jdk/internal/foreign/memory/BoundedPointer.java
! src/java.base/share/classes/jdk/internal/foreign/memory/LayoutTypeImpl.java
! src/java.base/share/classes/jdk/internal/foreign/memory/References.java
+ test/jdk/java/foreign/null/NullTest.java
+ test/jdk/java/foreign/null/libNull.c