Is asignment of a local static reference thread-safe?

Asked Apr 11 '17 at 21:47

Active Apr 11 '17 at 21:49

Viewed 41 times

I've read other questions on StackOverflow about the subject but I'm not positive they answer this question which combines a few different details. Is the following code that initializes a local static const reference with a lambda thread-safe?

std::vector<int> a, b, c;

void foo()
{
    static auto const& v = [](){ /* logic to return a or b or c */ }();
}

edited Apr 11 '17 at 21:49

asked Apr 11 '17 at 21:47

screwnut

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@FrançoisAndrieux Yes, I did. Edited to reflect intent. – screwnut Apr 11 '17 at 21:50
This is thread-safe for [C++11 and onwards](https://stackoverflow.com/questions/27181645/is-publishing-of-magic-statics-thread-safe). – nwp Apr 11 '17 at 21:50
It's safe provided your initialization logic doesn't call `foo` again. – François Andrieux Apr 11 '17 at 21:50

Is asignment of a local static reference thread-safe?

0 Answers0