Why is D unpopular?

[Paul Backus]

On Sunday, 22 May 2022 at 09:33:25 UTC, Max Samukha wrote:
> On Saturday, 21 May 2022 at 19:06:58 UTC, Paul Backus wrote:
>
>>
>> The best explanation of this that I've found is actually from 
>> an article about error handling in a research language called 
>> Midori. The following link goes directly to the relevant 
>> section:
>>
>> http://joeduffyblog.com/2016/02/07/the-error-model/#bugs-arent-recoverable-errors
>
> I have always had problems with this classification because 
> real world systems are modular, and bugs in a module are often 
> treated as exceptions by another module. That is, many systems 
> using plugins try to recover from bugs in a plugin. In a sense, 
> the plugin itself becomes an input that the host has to 
> validate.

If there is no isolation boundary between the plugin and the 
host, then the host cannot reliably recover from bugs in the 
plugin. The next section of the article, "Reliability, 
Fault-Tolerance, and Isolation," goes into much more detail about 
this.