https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53637
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2015-02-04 Summary|NRVO not applied in |NRVO not applied where |branches when it could be |there are two different | |variables involved Ever confirmed|0 |1 --- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> --- The problem is that GCC does not do NRVO when there are two different variables used. If the variable was the same, GCC would do the correct thing. That is: Foo bar(int i) { Foo result; if (i > 1) { return result; } else { return result; } } NRVO is applied.