Fix intptr_t*, uintptr_t*, ptrdiff_t* and size_t* mapping, map them to PointerBuffer, since referenced memory-size is arch dependent

Added extensive PointerBuffer unit tests w/ new mapping in generated test class.

2 files changed, 11 insertions, 4 deletions

diff --git a/src/java/com/jogamp/gluegen/JavaEmitter.java b/src/java/com/jogamp/gluegen/JavaEmitter.java
index df6f00a..1a6c313 100644
--- a/src/java/com/jogamp/gluegen/JavaEmitter.java
+++ b/src/java/com/jogamp/gluegen/JavaEmitter.java
@@ -1245,7 +1245,7 @@ public class JavaEmitter implements GlueEmitter {
           // t is <type>[], we need to get <type>
           targetType = t.asArray().getElementType();
         }
-
+        
         // Handle Types of form pointer-to-type or array-of-type, like
         // char* or int[]; these are expanded out into Java primitive
         // arrays, NIO buffers, or both in expandMethodBinding
@@ -1253,8 +1253,9 @@ public class JavaEmitter implements GlueEmitter {
           if (targetType.isVoid()) {
             return JavaType.createForCVoidPointer();
           } else if (targetType.isInt()) {
-            // size_t and intptr_t is always a PointerBuffer since size is arch dependent
-            if ("size_t".equals(targetType.getName()) || "intptr_t".equals(targetType.getName())) {
+            final SizeThunk targetSizeThunk = targetType.getSize();
+            if( null != targetSizeThunk && SizeThunk.POINTER == targetSizeThunk ) { 
+              // Map intptr_t*, uintptr_t*, ptrdiff_t* and size_t* to PointerBuffer, since referenced memory-size is arch dependent
               return JavaType.forNIOPointerBufferClass();
             }
             switch ((int) targetType.getSize(curMachDesc)) {
diff --git a/src/java/com/jogamp/gluegen/package.html b/src/java/com/jogamp/gluegen/package.html
index 7ea9d51..2b4f1fa 100644
--- a/src/java/com/jogamp/gluegen/package.html
+++ b/src/java/com/jogamp/gluegen/package.html
@@ -37,7 +37,13 @@
   </table>
   <p>
   <b>Warning:</b> Try to avoid unspecified bit sized types, especially <b>long</b>, since it differs on Unix and Windows!<br/>
-  <b>Note 1:</b>  Type <b>long</b> will result in broken code on Windows, since we don't differentiate the OS and it's bit size is ambiguous.
+  <b>Notes:</b>
+  <ol>
+      <li>Type <b>long</b> will result in broken code on Windows, since we don't differentiate the OS and it's bit size is ambiguous.</li>
+      <li>Anonymous void-pointer <i>void*</i> are mapped to NIO <i>Buffer</i>.</li>
+      <li>Pointers to pointer-size types like <i>intptr_t*</i>, <i>uintptr_t*</i>, <i>ptrdiff_t*</i> and <i>size_t*</i> are mapped to <i>PointerBuffer</i>, 
+                      to reflect the architecture depending storage size.</li>
+  </ol>
   </p>
   
   <h4>GlueGen Internal Alignment for Compound Data</h4>