On 18 Jun 2019, at 17:50, Timur Doumler via SG13 <sg13@lists.isocpp.org> wrote:

Update:

On 18 Jun 2019, at 17:29, Timur Doumler via SG13 <sg13@lists.isocpp.org> wrote:

7. 7.1/7.3 the while(true); is ihmo UB. Could we make it while(device.has_unprocessed_io()); or similarly check the state of it.

Also correct. Will fix.

I fixed this, however while(device.has_unprocessed_io()); would be the wrong condition if you do async processing (the normal case). Better to use while(device.is_running()). This way the loop will stop as soon as the device becomes unavailable or the user stops it.

Cheers,

Timur

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