• OS: OSX 10.13.2
• VS Code: 1.19.3
• C/C++ extension version: 0.14.6

Error Squiggles are shown for the following sample code (see screen snap further below):

#include <bitset>

int main(int argc, char const *argv[]) {
  // see http://en.cppreference.com/w/cpp/utility/bitset/operator_at
  std::bitset<8> foobit(42);
  if (foobit[0]) {
    foobit[1] = false;
  }
  return 0;
}

Unless I am missing something the code seems to be correct and should not present any issues, certainly no errors.