Re: GDB and compiler-operations (was: Lisp_Marker size on 32bit systems)

[Paul Eggert]

On 09/07/2018 07:12 AM, Stefan Monnier wrote:
>      No symbol "offsetof" in current context.

On a newer platform where GDB can see C macros (you really should enable 
this if you can, by the way, it mak,es debugging easier), I see this:

(gdb) p offsetof (struct Lisp_Vector, contents)
No symbol "__builtin_offsetof" in current context.

So the problem with me is that GDB does not support __builtin_offsetof. 
This is a known bug in GDB:

https://sourceware.org/bugzilla/show_bug.cgi?id=16240