[Issue 15575] Wrong value for static immutable struct with union

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=15575

--- Comment #1 from Cédric Picard <cpicard at openmailbox.org> ---
I should mention that the code is inspired by Adam Ruppe's arsd/color.d and
that a comment next to the "if (__ctfe)" part mentions that it is a hack
arround bug 10937. That may be related.

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