diff --git a/opengl/tools/glgen/src/JniCodeEmitter.java b/opengl/tools/glgen/src/JniCodeEmitter.java
index b1bd1fd..e51b7a2 100644
--- a/opengl/tools/glgen/src/JniCodeEmitter.java
+++ b/opengl/tools/glgen/src/JniCodeEmitter.java
@@ -1283,7 +1283,7 @@
             for (int i = 0; i < numArgs; i++) {
                 String typecast;
                 if (i == numArgs - 1 && isPointerOffsetFunc) {
-                    typecast = "(GLvoid *)";
+                    typecast = "reinterpret_cast<GLvoid *>";
                 } else {
                     typecast = "(" + cfunc.getArgType(i).getDeclaration() + ")";
                 }
@@ -1297,6 +1297,8 @@
                 if (cfunc.getArgType(i).isEGLHandle() &&
                     !cfunc.getArgType(i).isPointer()){
                     out.print(cfunc.getArgName(i)+"_native");
+                } else if (i == numArgs - 1 && isPointerOffsetFunc){
+                    out.print("("+cfunc.getArgName(i)+")");
                 } else {
                     out.print(cfunc.getArgName(i));
                 }
diff --git a/opengl/tools/glgen/stubs/gles11/common.cpp b/opengl/tools/glgen/stubs/gles11/common.cpp
index 75b75cb..c5a7a24 100644
--- a/opengl/tools/glgen/stubs/gles11/common.cpp
+++ b/opengl/tools/glgen/stubs/gles11/common.cpp
@@ -89,7 +89,7 @@
             getBasePointerID, buffer);
     if (pointer != 0L) {
         *array = NULL;
-        return (void *) (jint) pointer;
+        return reinterpret_cast<void*>(pointer);
     }
 
     *array = (jarray) _env->CallStaticObjectMethod(nioAccessClass,
diff --git a/opengl/tools/glgen/stubs/gles11/glGetActiveAttrib.cpp b/opengl/tools/glgen/stubs/gles11/glGetActiveAttrib.cpp
index 27b91fc..7d414d8 100644
--- a/opengl/tools/glgen/stubs/gles11/glGetActiveAttrib.cpp
+++ b/opengl/tools/glgen/stubs/gles11/glGetActiveAttrib.cpp
@@ -157,7 +157,7 @@
         (GLsizei *)length,
         (GLint *)size,
         (GLenum *)type,
-        (char *)name
+        reinterpret_cast<char *>(name)
     );
     if (_typeArray) {
         releasePointer(_env, _typeArray, type, JNI_TRUE);
diff --git a/opengl/tools/glgen/stubs/gles11/glGetActiveUniform.cpp b/opengl/tools/glgen/stubs/gles11/glGetActiveUniform.cpp
index 58f704c..a7376ba 100644
--- a/opengl/tools/glgen/stubs/gles11/glGetActiveUniform.cpp
+++ b/opengl/tools/glgen/stubs/gles11/glGetActiveUniform.cpp
@@ -157,7 +157,7 @@
         (GLsizei *)length,
         (GLint *)size,
         (GLenum *)type,
-        (char *)name
+        reinterpret_cast<char *>(name)
     );
     if (_typeArray) {
         releasePointer(_env, _typeArray, type, JNI_TRUE);
diff --git a/opengl/tools/glgen/stubs/gles11/glGetShaderSource.cpp b/opengl/tools/glgen/stubs/gles11/glGetShaderSource.cpp
index a7e1cd2..c995d9c 100644
--- a/opengl/tools/glgen/stubs/gles11/glGetShaderSource.cpp
+++ b/opengl/tools/glgen/stubs/gles11/glGetShaderSource.cpp
@@ -85,7 +85,7 @@
         (GLuint)shader,
         (GLsizei)bufsize,
         (GLsizei *)length,
-        (char *)source
+        reinterpret_cast<char *>(source)
     );
     if (_array) {
         releasePointer(_env, _array, length, JNI_TRUE);
diff --git a/opengl/tools/glgen/stubs/jsr239/GLCHeader.cpp b/opengl/tools/glgen/stubs/jsr239/GLCHeader.cpp
index 4743038..df11c53 100644
--- a/opengl/tools/glgen/stubs/jsr239/GLCHeader.cpp
+++ b/opengl/tools/glgen/stubs/jsr239/GLCHeader.cpp
@@ -128,7 +128,7 @@
             getBasePointerID, buffer);
     if (pointer != 0L) {
         *array = NULL;
-        return (void *) (jint) pointer;
+        return reinterpret_cast<void *>(pointer);
     }
 
     *array = (jarray) _env->CallStaticObjectMethod(nioAccessClass,