[Tinycc-devel] Warning if no break between two case ?

[ShangHongzhang 62185]

How to output a warning if there is no any 'break' statement between two 'case' 
statements?

for example:

switch (a)
{
   case 1:
      ... // there is no break, I want TCC to show some warning in this case
   case 2:
      ...
      break;
}

So, what could I do to achieve this?