Bisection assert is a good debug methodology

Recently, I fixed an issue which is related to uninitialised bit-field in C programming language. Because the bit-filed can be either 0 or 1, so the bug will occur randomly. But the good news is the reproduced rate is very high, nearly 50%. Though I am not familiar with the code, I used bisection assert to help:

 {
  ......
  assert(bit-field == 0);
  ......
  assert(bit-field == 0);
  ......
 }

If the first assert is not triggered, but the second one is, I can know which code block has the bug, then bisect code and add assert again, until the root cause is found.