Nikolas Klauser b101f01382
[libc++] Optimize using std::copy with an ostreambuf_iterator (#181815)
```
Benchmark                                                  old             new    Difference    % Difference
----------------------------------------------  --------------  --------------  ------------  --------------
std::copy(CharT*,_CharT*,_ostreambuf_iterator)         8115.45          329.54      -7785.91         -95.94%
```
2026-02-26 12:01:07 +01:00
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