ofFile Binary Mode

I'm trying to write a simple checksum function. It opens an image file under binary mode & reads blocks of data.

For some reason, it doesn't seem to be reading in binary mode. I can't get anything after the 5th position, even when getSize() reports its over 40000 in size.

This a bug? or have I just forgotten how to read files?

Block of code:

cout << "\n\n";

ofFile file;
file.open(path_to_some_png, ofFile::ReadOnly, true);

if (file.good()) {
	const int CHECKSUM_BLOCK_SIZE = 16;

	char *pc = new char[CHECKSUM_BLOCK_SIZE];
	do {

		memset(pc, NULL, CHECKSUM_BLOCK_SIZE); // make it all 00
		file.get(pc, CHECKSUM_BLOCK_SIZE);

		for (int i = 0; i < 16; i++) { // print
			cout << ((unsigned)pc[i] < 16 ? " 0" : " ") << hex << (unsigned)pc[i];
		}
		cout << "\n";

	} while (file.good());
	delete[] pc;
}

My code's output:

ffffff89 50 4e 47 0d 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

Ignoring the initial ffffff garbage above, you can see it stops after the return, 0D.

Real hex dump (32 chars) of the sample PNG:

89 50 4E 47 0D 0A 1A 0A 00 00 00 0D 49 48 44 52
00 00 02 00 00 00 02 00 08 06 00 00 00 F4 78 D4