Remove warnings in emitted C code.

Fix 1: Only emit "int * _offsetHandle = NULL" if it will be used, to
avoid unused variable warning. Fix 2: Add "unsigned" to typecasts in C
function calls when needed to avoid implicit typecast warning. This
commit also adds a unit test for a method that uses an "unsigned char
**" parameter, to mimic the JOCL clCreateProgramWithBinary() function
that caused the typecast warnings.

6 files changed, 64 insertions, 1 deletions

diff --git a/src/java/com/jogamp/gluegen/CMethodBindingEmitter.java b/src/java/com/jogamp/gluegen/CMethodBindingEmitter.java
index d856767..39141f2 100644
--- a/src/java/com/jogamp/gluegen/CMethodBindingEmitter.java
+++ b/src/java/com/jogamp/gluegen/CMethodBindingEmitter.java
@@ -427,7 +427,8 @@ public class CMethodBindingEmitter extends FunctionEmitter {
           writer.println("  jsize _tmpArrayLen;");
 
           // Pointer to the data in the Buffer, taking the offset into account
-          writer.println("  int * _offsetHandle = NULL;");
+          if(type.isNIOBufferArray())
+            writer.println("  int * _offsetHandle = NULL;");
 
           emittedDataCopyTemps = true;
         }
@@ -925,6 +926,15 @@ public class CMethodBindingEmitter extends FunctionEmitter {
         if (isConstPtrPtr(cArgType)) {
             writer.print("const ");
         }
+
+        // if this is a pointer to an unsigned type, add unsigned to the name to avoid compiler warnings
+        if(cArgType.isPointer()) {
+  	      Type typeLast = ((PointerType)cArgType).getLastTargetType();
+  	      if(typeLast.isInt() && (((IntType)typeLast).isPrimitiveUnsigned())) {
+  	    	writer.print("unsigned ");
+  	      }
+        }
+
         writer.print(cArgType.getName());
         writer.print(") ");
         if (binding.getCArgumentType(i).isPointer() && javaArgType.isPrimitive()) {
diff --git a/src/java/com/jogamp/gluegen/cgram/types/IntType.java b/src/java/com/jogamp/gluegen/cgram/types/IntType.java
index ffc5696..6eeb997 100644
--- a/src/java/com/jogamp/gluegen/cgram/types/IntType.java
+++ b/src/java/com/jogamp/gluegen/cgram/types/IntType.java
@@ -82,6 +82,11 @@ public class IntType extends PrimitiveType implements Cloneable {
         return unsigned;
     }
 
+    /** Indicates whether this type is an unsigned primitive type, as opposed to a typedef type that's unsigned. */
+    public boolean isPrimitiveUnsigned() {
+        return unsigned && !typedefedUnsigned;
+    }
+
     @Override
     public String toString() {
         return getCVAttributesString() + ((isUnsigned() & (!typedefedUnsigned)) ? "unsigned " : "") + getName();
diff --git a/src/java/com/jogamp/gluegen/cgram/types/PointerType.java b/src/java/com/jogamp/gluegen/cgram/types/PointerType.java
index 4922d28..f4811c7 100644
--- a/src/java/com/jogamp/gluegen/cgram/types/PointerType.java
+++ b/src/java/com/jogamp/gluegen/cgram/types/PointerType.java
@@ -120,6 +120,13 @@ public class PointerType extends Type implements Cloneable {
         return targetType;
     }
 
+    public Type getLastTargetType() {
+    	if(targetType.isPointer())
+    		return ((PointerType)targetType).getLastTargetType();
+    	else
+    		return targetType;
+    }
+
     @Override
     public boolean isFunctionPointer() {
         return targetType.isFunction();
diff --git a/src/junit/com/jogamp/gluegen/test/junit/generation/BaseClass.java b/src/junit/com/jogamp/gluegen/test/junit/generation/BaseClass.java
index f22b1df..f0db24b 100644
--- a/src/junit/com/jogamp/gluegen/test/junit/generation/BaseClass.java
+++ b/src/junit/com/jogamp/gluegen/test/junit/generation/BaseClass.java
@@ -155,6 +155,8 @@ public class BaseClass extends JunitTracer {
 
           i = binding.stringArrayRead(strings, i);
 
+          i = binding.binaryArrayRead(pb, pb, 0);
+
           i = binding.intArrayRead(ib, i);
           i = binding.intArrayRead(iarray, iarray_offset, i);
 
@@ -557,6 +559,30 @@ public class BaseClass extends JunitTracer {
           i = binding.stringArrayRead(null, 0);
           Assert.assertTrue("Wrong result: "+i, 0==i);
 
+          {
+        	  // one 0xff in each byte array
+              // the referenced buffer must be direct, non direct is not supported
+        	  ByteBuffer bbB = Buffers.newDirectByteBuffer(new byte [] {(byte)0xaa, (byte)0xff, (byte)0xba, (byte)0xbe});
+        	  bbB.rewind();
+              PointerBuffer pbB = newPointerBuffer(Bindingtest1.ARRAY_SIZE, direct);
+              PointerBuffer pbL = newPointerBuffer(Bindingtest1.ARRAY_SIZE, direct);
+              for(int j=0; j<Bindingtest1.ARRAY_SIZE; j++) {
+                  pbB.referenceBuffer(bbB);
+                  pbL.put(bbB.capacity());
+              }
+              pbB.rewind();
+              pbL.rewind();
+              validatePointerBuffer(pbB, Bindingtest1.ARRAY_SIZE);
+              Assert.assertNotNull(pbB.getReferencedBuffer(0));
+              Assert.assertTrue("Wrong result: "+pbB.getReferencedBuffer(0)+" != "+bbB, pbB.getReferencedBuffer(0).equals(bbB));
+              validatePointerBuffer(pbL, Bindingtest1.ARRAY_SIZE);
+              long temp = pbL.get();
+              Assert.assertTrue("Wrong result: "+temp, temp==bbB.capacity());
+              pbL.rewind();
+	          i = binding.binaryArrayRead(pbL, pbB, Bindingtest1.ARRAY_SIZE);
+	          Assert.assertTrue("Wrong result: "+i, Bindingtest1.ARRAY_SIZE==i);
+          }
+
           IntBuffer ib = newIntBuffer(3, direct);
           ib.put(0, 1);
           ib.put(1, 2);
diff --git a/src/junit/com/jogamp/gluegen/test/junit/generation/test1.c b/src/junit/com/jogamp/gluegen/test/junit/generation/test1.c
index 31307a9..c1fe41e 100644
--- a/src/junit/com/jogamp/gluegen/test/junit/generation/test1.c
+++ b/src/junit/com/jogamp/gluegen/test/junit/generation/test1.c
@@ -236,6 +236,18 @@ MYAPI int MYAPIENTRY stringArrayRead(const char *  *  strings, int num) {
     return l;
 }
 
+MYAPI int MYAPIENTRY binaryArrayRead(const size_t * lengths, const unsigned char *  * binaries, int num) {
+	int i, j, n=0;
+	for(i=0; i<num; i++) {
+		for(j=0; j<lengths[i]; j++) {
+			if(0xff==binaries[i][j]) {
+				++n;
+			}
+		}
+	}
+	return n;
+}
+
 MYAPI int MYAPIENTRY intArrayRead(const int *  ints, int num) {
     int i=0, s=0;
     if(NULL!=ints) {
diff --git a/src/junit/com/jogamp/gluegen/test/junit/generation/test1.h b/src/junit/com/jogamp/gluegen/test/junit/generation/test1.h
index 555a113..b6b6fd3 100644
--- a/src/junit/com/jogamp/gluegen/test/junit/generation/test1.h
+++ b/src/junit/com/jogamp/gluegen/test/junit/generation/test1.h
@@ -119,6 +119,9 @@ MYAPI const char * MYAPIENTRY intToStr(int i);
 /** Returns the length of all strings, strings maybe NULL. */
 MYAPI int MYAPIENTRY stringArrayRead(const char *  *  strings, int num);
 
+/** Returns the number of 0xff bytes found in all binaries. */
+MYAPI int MYAPIENTRY binaryArrayRead(const size_t * lengths, const unsigned char *  * binaries, int num);
+
 /** Returns the sum of all integers, ints maybe NULL. */
 MYAPI int MYAPIENTRY intArrayRead(const int *  ints, int num);