[Issue 23676] Compilation differences w/ braceless vs brace-full static if within switch statement

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=23676

--- Comment #3 from Bradley Chatha <bradley at chatha.dev> ---
Marking the nested function as @safe prevents the error message; allows the
compilation to succeed, however the compiler does still hang for a while before
it finishes.

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