Bug in compiler

It's becoming clear that I can write on the 8051 in C++.

No. It's become overabundantly clear that you believe you can use C++ on an 8051. Now that was pretty evident from the beginning, but that didn't keep you from stressing this point at every opportunity.

But if I can write an application quickly

If you can do it. But there has been negligible evidence that you really understand the task you're so convinced you're capable of completing. Instead you blame every failure of your attempts at implementing your ideas on others --- the tools, their makers, the people in this forum. Something and somebody must obviously be faulty, incompetent and/or "academic", as long as you can deny it might be your fault. In my country this attitude is usually summarized by an old adage: If the farmer can't swim, his swim trunks are at fault.

with the confidence brought about by using tools I know

... except that you rather evidently don't know the tools relevant to the job at hand.

then it should be worth the wrath of some forum members.

You're mistaken if you think what's being directed at you qualifies as wrath. It's more like commiseration, for now.

I don't understand why there are some guys that are so negative about certain suggestions.

Indeed, you don't understand. But you're wrong about what it is you don't understand. You utterly fail to grasp the idea that people telling you that your suggestions are bad might be doing so not because they're "negative", but because their experience taught them.

While pretending to ask a question, you really came here with a prejudice expecting people to provide arguments supporting it. But then something happened that you hadn't contemplated before: people gave you answers that disagreed with your pre-set opinion. Well, guess what, that's one of the consequences of asking a question: you lose the right not to have to listen to answers you don't like.

Wisdom comes not from asking questions, but from actually listening to answers.

It's becoming clear that I can write on the 8051 in C++.

No. It's become overabundantly clear that you believe you can use C++ on an 8051. Now that was pretty evident from the beginning, but that didn't keep you from stressing this point at every opportunity.

But if I can write an application quickly

If you can do it. But there has been negligible evidence that you really understand the task you're so convinced you're capable of completing. Instead you blame every failure of your attempts at implementing your ideas on others --- the tools, their makers, the people in this forum. Something and somebody must obviously be faulty, incompetent and/or "academic", as long as you can deny it might be your fault. In my country this attitude is usually summarized by an old adage: If the farmer can't swim, his swim trunks are at fault.

with the confidence brought about by using tools I know

... except that you rather evidently don't know the tools relevant to the job at hand.

then it should be worth the wrath of some forum members.

You're mistaken if you think what's being directed at you qualifies as wrath. It's more like commiseration, for now.

I don't understand why there are some guys that are so negative about certain suggestions.

Indeed, you don't understand. But you're wrong about what it is you don't understand. You utterly fail to grasp the idea that people telling you that your suggestions are bad might be doing so not because they're "negative", but because their experience taught them.

While pretending to ask a question, you really came here with a prejudice expecting people to provide arguments supporting it. But then something happened that you hadn't contemplated before: people gave you answers that disagreed with your pre-set opinion. Well, guess what, that's one of the consequences of asking a question: you lose the right not to have to listen to answers you don't like.

Wisdom comes not from asking questions, but from actually listening to answers.