; 14 : int& r = vInt[idx];

00000a1 00 00 00 00 mov eax, DWORD PTR ?idx@@3HA ; idx
000058b 0d 04 00 00
00 mov ecx, DWORD PTR ?vInt@@3V?$vector@HV?$allocator@H@std@@@std@@A+4
0000b8d 04 81 lea eax, DWORD PTR [ecx+eax*4]

; 15 :