What significant exceptions exist for the null principle, if any?

Question

As an (possible) example, the LLVM coding standard prohibits the use of standard RTTI or exceptions: http://llvm.org/docs/CodingStandards.html#do-not-use-rtti-or-exceptions

Is this a good idea, or is it a coding standard, outdated or unreasonable for most programs?

Are there any other functions in C ++ that significantly degrade program speed, memory usage, or executable size, even if you don't use them?

Answer 1

Is this a good idea or an outdated coding standard?

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