I am using a C bindings library
(https://code.dlang.org/packages/xcb-d).
I am following through a tutorial that was written for the C
library directly and just making the minor changes to make it
work with D.
I ran into a problem. The library ends up giving me a struct
pointer.
```
xcb_generic_event_t* event;
event = xcb_wait_for_event (connection);
free (event);
```
The problem is the `free` function. It is not provided by the
library but is part of the C standard library (in stdlib.h).
Do I need to call this function with my D code? I tried using
the `core.memory.GC.free` function from the D standard library
and it compiled and ran but that does not necessarily mean there
are not memory leaks (it also ran with the line entirely removed).
Do I need to call the `free` function with my D code because I
need to free memory that was allocated in C code?
