Vladislav Vaintroub f197f9a527 MDEV-32387 Windows - mtr output on is messed up with large MTR_PARALLEL. ...

Windows C runtime does not implement line buffering mode for stdio.

This sometimes makes output from different tests interleaved in MTR
MTR relies on this buffering (lines won't  output until "\n") to correctly
work in parallel scenarios.

Implement do-it-yourself line buffering on Windows, to workaround.

2023-10-10 20:53:00 +02:00

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