Building a string from n chars

["Nordlöw" via Digitalmars-d-learn]

On Thursday, 4 September 2014 at 19:24:00 UTC, Nordlöw wrote:
>     string t1; t1 ~= '*'.repeat(n).array;
>     string t2; t2 ~= "*".replicate(n);

After having read 
http://dlang.org/phobos/std_array.html#.replicate

I came to the conclusion that the lazy std.range:repeat is 
preferred.

I'm still a bit confused about the fact that -vgc gives no 
warnings about GC-allocations, though.