call setbuf(stdout, NULL): no symbol "NULL" in the current context
c, gdb, null
Solution
Just use `0` or `(void*)0`. Nothing fancy.
Problem
What should I do if I want to use identifier `NULL` in `gdb`'s call statement? Is it because I didn't include stdio.h in gdb? I have tried : `call #include <stdio.h>` but this doesn't seem to work.