Description Ryan Gross 2010-05-04 15:35:51 EDT

When compiling the following source code: 

NativeBuffer headerData = null;
			int prevByteSize = 0;                   // size of byte array created in the previous pass
			try {
				while(pixel_offset == -1) {
					// Murali Kumaran. This is added to prevent the OutOfMemory error
					// or crash of the workstation, if the application could not find
					// the end of the header file.
					// If the maxHeaderSizeExpected is set to a value <=0 then
					// the application will continue until it find an end of
					// file or an error.

					if (maxHeaderSizeExpected > 0) {
						if (byteSize >= maxHeaderSizeExpected) {
							// Cleanup the native buffer used to calculate the header size.
							if( headerData != null ) {
								headerData.dispose();
								headerData = null;
							}
							throw new IOException("[ISUImagePeer] Could not find the end of header file after parsing [" + byteSize + "] Bytes");
						}
					}

					//		          IISge49600 Add check for image file size
					if (byteSize >= imageFileSize ) {
						// Cleanup the native buffer used to calculate the header size.
						if( headerData != null ) {
							headerData.dispose();
							headerData = null;
						}
						throw new IOException("[ISUImagePeer] Could not find the end of header after parsing [" + byteSize + "] Bytes, with imageFileSize [" + imageFileSize + "]");
					}

					byteSize *= 2;                                  // double byteSize
					// 				 IISge49600 Add check for image file size
					if(byteSize > imageFileSize)
					{
						byteSize = imageFileSize;
					}

					NativeBuffer prevHeaderData = headerData;
					headerData = null;
					if( prevHeaderData != null ) {
						prevByteSize = prevHeaderData.getSize();
					}
					try {
						headerData = allocateTempMemory(byteSize);
						if(prevHeaderData != null)  {                     // copy the previously read data into the new block
							prevHeaderData.copyToNativeBuffer(0,prevByteSize,headerData,0);
						}
					}
					finally {
						prevHeaderData.dispose();
						prevHeaderData = null;
					}

a compiler warning with the text "Null comparison always yields false: The variable prevHeaderData cannot be null at this location" is generated for the last line, which is actually an assignment.

-- Configuration Details --
Product: Eclipse 1.2.2.20100122-1337 (org.eclipse.epp.package.java.product)
Installed Features:
 org.eclipse.jdt 3.5.2.r352_v20100108-7r88FEwFI0WTuoBl0iaG0tyhfZH6