GDB, break condition, check NULL pointer

c, conditional-breakpoint, gdb

Solution

try to re-compile your project with CFLAG -ggdb3, then set the break point.Or use (void *)0 instead of `NULL`

Problem

I want to set a break point, and only stop at it, when one pointer called `rc` is `NULL`. I did like that ``` b task.c:190 if rc==NULL ``` but gdb says, `NULL` would be unrecognized, so I changed to ``` b task.c:190 if(!rc) ``` which seems worked. But I am not very sure, correct me if I am doing wrong.

Original source