allan.jacobs@Eng 1997-12-05
Negative int literals that the specification says should cause
a compile-time error are not rejected by JDK 1.2 javac.


algol% cat irange1.java
public class irange1 {
public static void main(String[] argv) {
    int i1 = -2147483649; // error: -2147483549 out-of-range
    System.out.println(i1);
}
}

With a JDK 1.1.4 compiler:
pine% javac -d . irange1.java
irange1.java:4: Numeric overflow.
    int i1 = -2147483649; // error: -2147483549 out-of-range
              ^
1 error


With a JDK 1.2 compiler:
algol% ${JSOFT}/javac -d . irange1.java
algol% ${JSOFT}/java -verify irange1
2147483647

With JTG's exact-vm compiler (JDK 1.2):
algol% /usr/java1.2e/bin/javac -d . irange1.java
algol% /usr/java1.2e/bin/java -verify irange1
2147483647