https://issues.dlang.org/show_bug.cgi?id=22964
Issue ID: 22964
Summary: array cast message is awkwardly worded
Product: D
Version: D2
Hardware: x86
OS: Mac OS X
Status: NEW
Severity: enhancement
Priority: P1
Component: druntime
Assignee: [email protected]
Reporter: [email protected]
Given the following code:
```d
auto str = "hello";
auto wstr = cast(wstring)str;
```
The array cast cannot complete, because it would require 2.5 wchars. Regardless
of the correctness of this attempt, the message is confusing:
```
An array of size 5 does not align on an array of size 4, so `immutable(char)`
cannot be cast to `immutable(wchar)`
```
1. I never requested an array of size 4, so I'm not sure why that is in the
message.
2. It's not a matter of alignment, but of size.
3. You can cast an immutable char to an immutable wchar, so the message is
wrong
4. The bytes are displayed here, not the lengths, which isn't as useful, there
is no need to have the user work out the math.
I am writing a PR to fix this message, this is the bug report for that fix.
--
