Line number of segmentation fault

Question

Is there any gcc option I can set that will give me the line number of the segmentation fault?

I know I can:

1. Debug line by line
2. Put printfs in

Answer 1

There is no method for GCC to provide this information, you'll have to rely on an external program like GDB.

GDB can give you the line where a crash occurred with the "bt" (short for "backtrace") command after the program has seg faulted. This will give you not only the line of the crash, but the whole stack of the program (so you can see what called the function where the crash happened).