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


From: Paul Eggert
Subject: Re: GDB and compiler-operations (was: Lisp_Marker size on 32bit systems)
Date: Fri, 7 Sep 2018 08:48:48 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1

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




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