D runtime in os x dylib

[John Colvin]

There seems to be a problem with starting the d runtime in a d 
dylib loaded in a c program. Whenever I call Runtime.initialize() 
i get a segfault.

C code:
    #include <stdio.h>
    #include <dlfcn.h>

    int main() {
        void *library;
        int (*fptr)();
        library = dlopen("testlib.dylib", RTLD_LAZY);
        if(library == NULL)
            puts("couldn't load the library");
        else {
            *(void **)(&fptr) = dlsym(library,"number");
            if(fptr == NULL) {
                puts("couldn't load function");
            }
            else {
                printf("the result is %d\n",(*fptr)());
            }
        }
        return(0);
    }

compiled with gcc, no flags.

d code:

    import core.runtime;

    extern(C) int number() {
        Runtime.initialize();
        return(4);
    }

compiled with dmd -shared

Backtrace:

    Program received signal EXC_BAD_ACCESS, Could not access 
memory.
    Reason: 13 at address: 0x0000000000000000
    0x000000010003de28 in __tls_get_addr ()
    (gdb) bt
    #0  0x000000010003de28 in __tls_get_addr ()
    #1  0x000000010003cdfc in thread_attachThis ()
    #2  0x000000010003ccb8 in thread_init ()
    #3  0x000000010003e312 in gc_init ()
    #4  0x0000000100044ff5 in rt_init ()
    #5  0x000000010003b637 in 
D4core7runtime7Runtime10initializeFDFC6object9ThrowableZvZb ()
    #6  0x0000000100034ee9 in number ()
    #7  0x0000000100000e84 in main ()

All compilation and debugging done in OS X 10.7

Note: if the Runtime.initialize(); line is commented out, the 
library is loaded and runs correctly.