CODEWITHSUNDEEP
c++c++11eclipse-cdtalignas
Cendey
Cendey

Reputation: 31

alignas(T) not resolved in template function

When use Eclipse with MinGW(version:4.8.1) to compile the following code fragement, it can pass but Eclipse still report: "Multiple markers at this line - Type 'alignas' could not be resolved"

template<typename X> void set_aside(std::vector<X> vx) {
    constexpr int max_buf = 1024;
    alignas(X) X buffer[max_buf];

    int max = min(vx.size(), max_buf / sizeof(X));
    std::uninitialized_copy(vx.begin(), vx.begin() + max, buffer);
}

What happend with this issue, although the code fragement pass the comiple,yet Eclipse marks with error. Someone have ever met this issue? Please kindly help me to resolve this issue,thanks very indeed!

Upvotes: 3

Views: 989

Answers (1)

TemplateRex
TemplateRex

Reputation: 70546

Many IDEs use a front-end syntax checker that is different than their back-end compiler. Eclipse Kepler (released June 2013) is mostly up-to-date with C++11 syntax, although some things like alignment support and the interaction with in-class initializers and default constructors might not be fully supported (yet). Similary, C++14 features like decltype(auto) will work if the back-end compiler is called with std=C++1y but will not be recognized by the front-end syntax checker.

NOTE: this is not unique to Eclipse, also Visual C++ Intellisense is sometimes running behind (especially in CTP versions) the actual compiler, causing the red squiggly lines.

Upvotes: 2

Related Questions