public boolean validCheckSum() throws IOException {
		if (checkSum == 0) {
			// Some compilers just set this to zero
			return true;
		}
		return (calcCheckSum() == 0);
	}
Validates the record's checksum

@return True if the checksum is valid; otherwise, false
@throws IOException if an IO-related error occurred
Ghidra/Features/Base/src/main/java/ghidra/app/util/bin/format/omf/OmfRecord.java