On Tuesday 16 December 2014 17:37:02 René J.V. Bertin wrote: > Out of curiosity, what does building with -fexceptions (= without > -fno-exceptions) do to simple calls like QString() or QIcon()? Does it > introduce overhead there?
Yes and no. QString() is inline, so the compiler can tell that it doesn't throw when it inlines the code. QIcon() isn't inline and neither is it marked as noexcept. Therefore, the compiler must add surrounding EH code so that any locals you have in the context where that QIcon was created can be destructed. Proof left as an exercise to the reader. -- Thiago Macieira - thiago.macieira (AT) intel.com Software Architect - Intel Open Source Technology Center _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
