Bugzilla – Full Text Bug Listing
| Summary: | Unnecessary cast wrongly reported | ||
|---|---|---|---|
| Product: | [Eclipse Project] JDT | Reporter: | Olivier Thomann <Olivier_Thomann> |
| Component: | Core | Assignee: | Philipe Mulet <philippe_mulet> |
| Status: | VERIFIED FIXED | QA Contact: | |
| Severity: | normal | ||
| Priority: | P3 | CC: | mle |
| Version: | 3.0 | ||
| Target Milestone: | 3.0 M4 | ||
| Hardware: | PC | ||
| OS: | Windows 2000 | ||
| Whiteboard: | |||
Problem is quite subtle, since the unary expression is the first argument of the binary (not a cast expression, but a unary of a cast). Fixed in latest, regression test added. Verified. |
Using 0819, compiling this test case leads to a warning for an unnessesary cast, but the result of the two expressions is different. public class Test { public static void main(String[] args) { final long lgLow32BitMask1 = ~(~(long) 0 << 32); final long lgLow32BitMask2 = ~(~0 << 32); System.out.println("lgLow32BitMask1: "+lgLow32BitMask1); System.out.println("lgLow32BitMask2: "+lgLow32BitMask2); } }