Winter '21 Salesforce Safe Navigation Operator Bugs

SafeNavigationOperatorCompileFail.java

// Example: CompileFail error on valid code
class B {
    string field = 'Test';
}
B b1 = new B(), b2;
//System.TypeException: Comparison arguments must be compatible types: String, Boolean
System.assertEquals(true, b1.field != b2?.field);

SafeNavigationOperatorInternalServerError.java

// Example: Internal Server Error, no gack code
Contact con1, con;
System.assert(con1?.FirstName == con2?.FirstName);

SafeNavigationOperatorInvalidComparisonResult.java

// Example: debug outputs opposite value
class A {
    string field = 'Test';
}
A a1 = new A(), a2;
System.debug(a1.field != a2?.field); // Outputs false, should be true
System.debug(a1.field == a2?.field); // Outputs true, should be false