Bug 17990 – Type.toChars() returns null and Type.size() returns nonsense on 32-bit platforms only

This bug was found in this PR (https://github.com/dlang/dmd/pull/7332) in this code:(https://github.com/JinShil/dmd/blob/1cf383600f21394b12e2077ae97c4944f53c5e2b/src/ddmd/expressionsem.d#L7622-L7636) On 32-bit platforms `p2.toChars()` always returns null and `p2.size()` returns nonsense. On 64-bit platforms they're fine. For example, the error message always appears like this on 32-bit platforms: Deprecation: Operands point to types of different size; void (1 bytes), (null) (158464776 bytes). It should appear like this (as it does on 64-bit platforms): Deprecation: Operands point to types of different size; void (1 bytes), ulong (8 bytes). See the results of the auto-tester in the aforementioned PR for more details.

Actually, after looking into this, it Type.toChars() and Type.size() are returning the correct values. The problem appears to be with the `deprecation()` function and variable format arguments. Will post a separate issue when more information is gathered.