While answering this question I realized that ICC got it wrong about precedence of sizeof and []
#include <iostream>
int main() {
std::cout << (sizeof(int)["abcdefghij"]) << '\n';
}
It should be parsed as sizeof((int)["abcdefghij"]) because [] has higher precedence than sizeof which will result in a compilation error. But ICC 21.1.9 does compile it and prints "e" which is "abcdefghij"[sizeof(int)]
Demo on Godbolt
From the above link we can see that other compilers report an error as expected
