Linker Error in debug build

Linker Error in debug build

Using icpc (ICC) 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;}


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For more complete information about compiler optimizations, see our Optimization Notice.

Thank for report this issue. I've filed a bug #CMPLRIL0-31019 to track it.

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