[Issue 19059] Invalid integer literal 08 and 09 allowed

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=19059

--- Comment #5 from Hiroki Noda <kubo39 at gmail.com> ---
I am concerned about (2) and (3), is this behavior confusing with the use of
std.conv. octal?

---
assert(010 == 10); // Error: octal literals 010 are no longer supported, use
std.conv.octal!10 instead
assert(019 == 19); // Error: radix 8 digit expected, not 9
                       // Error: octal literals 021 are no longer supported,
use std.conv.octal!21 instead

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