Using icpc (ICC) 19.0.1.144 20181018. The following (stand alone) code compiles and links as expected when using
"icpc -std=c++17 error.cpp -o exec"
However, building a debug executable by turning on either -g or -O0 flag results in a linker error.
// error.cpp
#include <vector>
constexpr bool decider = false;
void Function() {
std::vector<unsigned long long> v1;
if constexpr( decider ) {
if( false ) {}
std::vector<unsigned long long> v2 = v1;
}
}
int main() {return 0;}
