Shared library: loading doesn't call shared static this

[Mathias LANG]

Hello,
I'm in the process of creating a PAM module using D.

First step, I ported <pam/modules.h> and the included 
pam/_types.h> to D, pretty straightforward.
Then I created a simple D source, which looks like:

````
extern(C) int  pam_sm_open_session(pam_handle_t* pamh, int flags, 
int ac, const char** av)
{
     writeln(__PRETTY_FUNCTION__);
     return PAM_SUCCESS;
}
````

Compiled it using dub, set up PAM & all the required stuff (I've 
already wrote one in C so it was pretty easy), and ran my test 
util, written in C.
I got a SIGSEGV.
I tracked it down to be the writeln call, it seems the fd are not 
initialized.
Easy way to fix it is to call std_stdio_static_this() from 
std.stdiobase.

So I went to http://dlang.org/dll-linux.html , copied the 
example, and here's my result:

xxxx at xxxx:~/Work/PAM$ ./main
+main()
Dynamic library is loaded
dll() function is found
dll()
unloading libdll.so
-main()

Which differs from the example in that the "shared static this" 
are not called.
Is that a bug ?

NB: DMD 2.064.2, debian x86_64, gcc 4.8.2