Top Questions

1. Why is the gets function so dangerous that it should not be used?
   292 votes

   13 answers
2. Is errno thread-safe?
   209 votes

   8 answers
3. Can likely/unlikely macros be used in user-space code?
   26 votes

   3 answers
4. What is the size of an empty struct in C?
   25 votes

   4 answers
5. How can I determine the return address on stack?
   19 votes

   6 answers