4 ms·
std::vector<int> allocated and freed on the stack will allocate an array for its int’s on the heap…
by dh2022 11mo ago
std::vector<int> allocated and freed on the stack will allocate an array for its int’s on the heap…
- usefulcat 11mo agoI've heard that MSVC does (did?) that, but if so that's an MSVC problem. gcc and clang don't do that. https://godbolt.org/z/nasoWeq5M https://godbolt.org/z/nasoWeq5M
- menaerus 11mo agoWDYM? Vector is an abstraction over dynamically sized arrays so sure it does use heap to store its elements.
- aw1621107 11mo agoI think usefulcat interpreted "std::vector<int> allocated and freed on the stack" as creating a default std::vector<int> and then destroying it without pushing elements to it. That's what their godbolt link shows, at least, though to be fair MSVC seems to match the described GCC/Clang behavior these days.
- deleted 11mo ago[deleted]
- Gupie 11mo agoSure, but my point was that RAII doesn't need to involve the heap. Another example would be acquiring abd releasing a mutex.