diff -r a42e6992897c -r d22e9274fcad src/types/IntegerDataTypeReader.h
--- a/src/types/IntegerDataTypeReader.h	Sat Nov 27 23:15:16 2021 +0100
+++ b/src/types/IntegerDataTypeReader.h	Mon Nov 29 19:30:52 2021 +0100
@@ -56,6 +56,7 @@
 	}
 
 	integer_t readValue(std::istream &input) override {
+		static const integer_t ZERO = 0;
 		integer_t value = 0;
 		integer_t shift = 0;
 		octet_t octet;
@@ -66,7 +67,7 @@
 		} while (octet >= 128);
 
 		if ((shift < (sizeof (integer_t) * 8)) && (octet & 0x40))
-			value |= (~0 << shift);
+			value |= (~ZERO << shift);
 		return value;
 	}