internal error: assertion failed at: "shared/cfe/edgcpfe/decl_inits.c", line 6224

ldalessa:~/temp$ cat test.cpp
#include <atomic>

struct Foo {
  Foo() : foo_() { }
  std::atomic<int> foo_[2];
};

int main() {
}
ldalessa:~/temp$ gcc --version
gcc (GCC) 4.9.2
Copyright (C) 2014 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

ldalessa:~/temp$ gcc -std=c++11 test.cpp
ldalessa:~/temp$ icpc --version
icpc (ICC) 15.0.4 20150805
Copyright (C) 1985-2015 Intel Corporation.  All rights reserved.

ldalessa: ~/temp$ icpc -std=c++11 test.cpp
test.cpp(4): internal error: assertion failed at: "shared/cfe/edgcpfe/decl_inits.c", line 6224

    Foo() : foo_() { }
                ^

compilation aborted for test.cpp (code 4)

Current workaround is to skip the initializer for this member variable.