digitalmars.D.bugs - [Issue 24341] New: Switch over enum are poorly verified
- d-bugmail puremagic.com (40/40) Jan 15 https://issues.dlang.org/show_bug.cgi?id=24341
https://issues.dlang.org/show_bug.cgi?id=24341 Issue ID: 24341 Summary: Switch over enum are poorly verified Product: D Version: D2 Hardware: All OS: All Status: NEW Keywords: accepts-invalid Severity: normal Priority: P1 Component: dmd Assignee: nobody puremagic.com Reporter: b2.temp gmx.com Test case: ``` enum E : ubyte { e0, e1 } void oops(E e) { switch (e) { case 300: break; // accepted but can be statically verified to be wrong default: } } void main() { } ``` there are two things here 1. even without E body, we know that 300 is out of range 2. with the body we can check that 300 is not 0 either 1. But for now the compiler is just happy with that code. Likely a problem of premature integral promotion. This can cause problems when the definition of E is updated. --
Jan 15