Re: ANN: Alien 0.3.1

[Thomas Harning <harningt@...>]

Fabio Mascarenhas wrote:
> Well, guess I spoke too soon about libffi! The documentation is pretty 
> sketchy, but I dug around in the source of the CVS version of libffi 
> and found how to do callbacks. So after some hours of late night 
> hacking I ripped out ffcall and put libffi in its place. The Alien API 
> remains the same, so I am calling this version 0.3.1.
Just a note: on AMD64 it appears that test_libc.lua works.
The normal tests do not, though... it segfaults @ _testfunc_callback_i_if ()

BT:
#0  0x00000000005157e8 in ?? ()
#1  0x00002ae74fc98544 in _testfunc_callback_i_if (value=262144, 
func=0x5157e8)
   at tests/alientest.c:155
#2  0x00002ae74f88fbe0 in ffi_call_unix64 () from 
/usr/local/lib/lua/5.1/alien.so
#3  0x00002ae74f88f629 in ffi_call (cif=0x7fff5b247810,
   fn=0x2ae74fc98530 <_testfunc_callback_i_if>, rvalue=0x7fff5b24784c,
   avalue=0x7fff5b2477a0) at src/x86/ffi64.c:428
#4  0x00002ae74f88e74b in alien_function_call () from 
/usr/local/lib/lua/5.1/alien.so


Tried tracking it down to make sense of it...  it almost looks like the 
function address is being truncated to 32-bits...