Daniel Pravat created MESOS-5428:
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Summary: Update the mechanism to define flags in FlagsBase derived
clases
Key: MESOS-5428
URL: https://issues.apache.org/jira/browse/MESOS-5428
Project: Mesos
Issue Type: Bug
Reporter: Daniel Pravat
If a program exeposes flags, the recommendation from Mesos was to use a
derived class from FlagsBase, add the new flags in constructor.
As benefit the new `Flags` class `inherits` all the flags from the derived
classes.
Each derived calss calls the method `add` implemented in `FlagsBase` which uses
`dynamic_cast` to set the default value and other things.
Since the constructor is not completed class is not completed (in Visual Studio
the vtable is not correct at that time) the code does not work on Windows.
We should have to call a separate method in Windows.
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