Tail pad optimization, cache friendlyness and C++ interrop

[Dicebot via Digitalmars-d]

On Saturday, 21 June 2014 at 10:49:57 UTC, Artur Skawina via 
Digitalmars-d wrote:
>> In other words, what is potential danger you need to be 
>> concerned about that makes potential contributions too risky? 
>> One problem I am aware of is redistribution issue which is 
>> common blocker with getting into linux distributions. But 
>> personal contributions? Can you explain it in a bit more 
>> details?
>
> It's not about being able to contribute to DMD, it is about 
> being able
> to work on /other/ projects.

This is exactly what I don't understand. How does DMD license 
affect work with any other projects? You are passing copyright to 
DigitalMars for all contributions anyway, Boost or proprietary. 
What is potential danger to be aware of? I think I am simply not 
that educated in legal matters on this topic.