What to Avoid on MCUs

In this lesson:

• why exceptions are usually disabled on bare metal, and what to use instead
• RTTI (dynamic_cast/typeid) and the metadata it drags in
• dynamic allocation revisited, the C++ forms of the heap problem
• the compiler flags that turn these off (-fno-exceptions -fno-rtti)
• the deterministic patterns that replace them

This lesson is the counterweight to the rest of the module: C++ gives you powerful features, but three of them carry costs that bare-metal firmware usually can't accept.