dlang
fix(preview=in|rvaluerefparam): Allow int to uint implicit conversion
One would expect that a CT-known value such as 42 can implicitly convert to 'ref uint' when rvalue-ref preview switches are on.
Thanks for your pull request, @Geod24!
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I need to revisit this. After looking at the failing test, it raises the question whether foo("1234"); void foo(ref char[4]); should compile with -preview=rvaluerefparam. It could - because we can create a temporary and pass it to foo without memory allocation. However, that would be a bit surprising. -preview=in doesn't have that problem because it's always const, and foo("1234"); void foo(ref const char[4]); already compiles.