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# System prepended metadata

title: Testing Musl Support

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# Testing Musl Support

When testing the Musl support in Unikraft, be aware that the following are not yet implemented or fully functional. In case of issues related to these, simply ignore those, for now.

- `uksignal` micro-library isn't yet properly implemented.
- `wait` system call isn't properly supported.
- `exit` system call isn't properly supported.

Some issues that are known but without a fix yet:

- Printing to standard output may not be flushed.