#include <algorithm>

struct RT {
    std::pair<int,int> v[100000]; // runtime linked with size of this array, 6s at 10000, 20s at 20000, who knows at 200000 (quadratic time? who knows)
} z;

int main() {
}

The above code seems to be stuck in compiling on g++ under linux. (compiled as g++ -o prog prog.cpp -std=c++11) It's been tested and has failed under

• Linux 4.0.6-1-ARCH x86_64 GNU/Linux — g++ (GCC) 5.1.0

• Linux 4.3.3-1-ARCH x86_64 GNU/Linux — g++ (GCC) 5.3.0

• Linux 3.19.0-21-generic x86_64 GNU/Linux — g++ (GCC) 5.3.0

• It also fails when submitted to ideone.com, codeforces.com (eg), dmoj.ca

It appears to compile successfully using clang++ and when using cygwin

Could other people try compile this and see what results they get?