What is wrong with using inline functions?

Question

While it would be very convenient to use inline functions at some situations,

Are there any drawbacks with inline functions?

Conclusion:

Answer 1

There is a problem with inline - once you defined a function in a header file (which implies inline, either explicit or implicit by defining a body of a member function inside class) there is no simple way to change it without forcing your users to recompile (as opposed to relink). Often this causes problems, especially if the function in question is defined in a library and header is part of its interface.