[Issue 18016] using uninitialized value is considered @safe but has undefined behavior

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18016

--- Comment #11 from Manu <turkeyman at gmail.com> ---
Please don't do that; allow LDC to continue to remove such code as usual.
`= void` initialisation is used specifically to avoid that work. DMD is a
reference, we don't want to emulate its had habits.

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