Sujet : RVO vs. TCO De : news.5.maazl (at) *nospam* spamgourmet.org (Marcel Mueller) Groupes :comp.lang.c++ Date : 09. Jun 2025, 16:16:12 Autres entêtes Organisation : MB-NET.NET for Open-News-Network e.V. Message-ID :<1026trt$1v2oi$1@gwaiyur.mb-net.net> User-Agent : Mozilla Thunderbird
Hello, does a tail call prevent return value optimization? vector<XXX> func1(); vector<XXX> func2() { if (some_condition) return func1(); vector<XXX> result; // populate result return result; } AFAIK RVO requires all paths of a function to return the same instance. But can this also work with tail calls like func1()? If not, the following work around could be preferred: vector<XXX> func3() { vector<XXX> result; if (some_condition) result = func1(); // forces move else ; // populate result return result; } Marcel
RVO vs. TCO