Re: Bus Error while trying to run the ffi_closure example in the documentation...

[Timothy Wall <twall@users.sf.net>]

I'm using ffi_closure on OSX (not lion, though) amd64 target and it performs as expected for me.

Have you run the testsuite?  there are ffi_closure tests in that.

On Jan 7, 2012, at 3:28 PM, Nathan Rajlich wrote:

> Ok so as a little update, the test program I linked to above work on
> my Windows XP VM and Ubuntu VMs, so it looks like this might be
> something with either the Darwin 64-bit support, or something with my
> configuration. If somebody else has an OS X setup and could compile
> the example above it would be really helpful. Thanks in advance!
> 
> On Sat, Jan 7, 2012 at 12:14 PM, Nathan Rajlich <nathan@tootallnate.net> wrote:
>> Awww nobody? Well for easier reference, here's the source code used in
>> question: https://gist.github.com/1575877 . It's straight from the
>> libffi docs. Hopefully with the source here somebody else can try
>> compiling and letting me know the result. Thanks!
>> 
>> On Fri, Jan 6, 2012 at 12:17 PM, Nathan Rajlich <nathan@tootallnate.net> wrote:
>>> Hey all,
>>> 
>>> So I'm trying to run the ffi_closure example from the libffi
>>> documentation (the one that wraps fputs() ). When trying to run the
>>> program, I get a "Bus Error: 10" and the program crashes.
>>> 
>>> This is on OS X 64-bit (Lion). Put through gdb, this is what I get:
>>> 
>>> ∞ ~/node-ffi/deps (gyp) $ gdb --args ./out/Debug/test
>>> GNU gdb 6.3.50-20050815 (Apple version gdb-1705) (Fri Jul  1 10:50:06 UTC 2011)
>>> Copyright 2004 Free Software Foundation, Inc.
>>> GDB is free software, covered by the GNU General Public License, and you are
>>> welcome to change it and/or distribute copies of it under certain conditions.
>>> Type "show copying" to see the conditions.
>>> There is absolutely no warranty for GDB.  Type "show warranty" for details.
>>> This GDB was configured as "x86_64-apple-darwin"...Reading symbols for
>>> shared libraries ... done
>>> 
>>> (gdb) run
>>> Starting program: /Users/nrajlich/node-ffi/deps/out/Debug/test
>>> Reading symbols for shared libraries ++......................... done
>>> 
>>> Program received signal EXC_BAD_ACCESS, Could not access memory.
>>> Reason: KERN_PROTECTION_FAILURE at address: 0x0000000100100a20
>>> 0x0000000100100a20 in ?? ()
>>> (gdb) bt
>>> #0  0x0000000100100a20 in ?? ()
>>> #1  0x0000000100001424 in start ()
>>> 
>>> 
>>> Thanks for looking, any thoughts would be appreciated! Cheers!