On 2010-06-29 19.55, jpf wrote:
On 29.06.2010 11:08, Jacob Carlborg wrote:
On 2010-06-27 12:35, jpf wrote:
Hi,
are you still working on that? I tried to use druntime as a dynamic
library on
Linux, and I had exactly the same problem. (version node not found for
symbol
_d_th...@4)
Googling showed that this problem has been discussed before:
http://digitalmars.com/d/archives/digitalmars/D/libphobos_as_.so_54793.html
So because of the extern(Windows) / _stdcall calling convention, dmd
emits the @4
(
http://en.wikipedia.org/wiki/Name_mangling#C_name_decoration_in_Microsoft_Windows
)
If I understand this
http://people.redhat.com/drepper/symbol-versioning
correctly, ELF uses symbol names like _d_th...@4 as n...@version. As
there is no
entry for version 4, linking fails. I guess mac is not affected,
because Mach-O
accepts _d_th...@4 as a symbol name.
It seems like nothing has changed since then.
http://www.dsource.org/projects/druntime/browser/trunk/src/rt/deh2.d
http://www.dsource.org/projects/druntime/browser/trunk/src/rt/deh.c
_d_throw is still extern(Windows) / _stdcall and i guess dmd would
still emit calls
to _d_th...@4 if _d_throw was changed to extern(C).
Btw: Someone seems to have found a basic workaround for the name
mangling problem:
http://www.curoles.com/j/dso/dso.html
But i guess, this should really be fixed in the compiler and druntime.
I've managed to solve the linker error as shown on the last link and
then got the same problem (segmentation fault) as on that site. Is this
a problem with the compiler or the runtime?
Same problem here. (With the dmd and druntime patches, so it's not
related to the objcopy workaround)
Having a short look at the relevant druntime source, I don't see how
this problem could be caused by druntime. My debugging / asm skills
aren't very advanced however, so I can't really tell. I guess Sean Kelly
or Walter could say more on that. Maybe we should ask on the dmd-devel
or the phobos mailing list (or is there a list for druntime?)
That is a good idea, I don't think there is a mailing list for druntime.
--
Jacob Carlborg
