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The omission of namespaces is entirely down to the first aim of EC++ and now essentially obsolete. to avoid non-deterministic (in both memory and timing) language/library features unsuited to hard-real-time applications.to support the use of C++ in embedded systems at a time before ISO standardisation of the language, by restricting the language to a common subset available on all compilers.Moreover C++ exceptions are intrinsically non-deterministic and therefore unsuited to many real-time applications.Ī compiler may implement the EC++ (Embedded C++) "standard".
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The 8 bit AtmelAVR with its limited ROM and RAM resources is not suited to the use of the STL which imposes a considerable load on both. And the STL can be compiled with -fno-exceptions - as that's how I compile my compiler code. If you use the -fno-exceptions, the compiler should error if you have any throw in the code.
#EMBEDDED C PROGRAMMING AND THE ATMEL AVR GITHUB FULL#
I'm not an expert on Atmel C++ implementation, but I would be VERY surprised if the compiler supports throw, but not try/catch - since that would be about as useful as a screwdriver made from chocolate, when trying to fix the heater in a sauna that is stuck on full heat. Whether it WILL be at some point in the future is obviously up to Atmel or whoever they subcontract to make their compiler. My best guess is that exceptions are both space- and time-consuming (time is only a real problem when the code throws, but space is needed for the unwind tables always, and can easily be about the same size as the overall code) for the compiled code, coupled with "rather difficult to implement", it's perhaps not the highest item on the list for the compiler developers, and thus not yet implemented. Obviously, nobody but the people that produce that compiler can really answer that question.