gcc shared library init problem (2nd try)

[Ralf Fassel]

[sorry if this appears twice, we had some problems with our mailer]
gcc 2.95.1, 2.95.2, 2.7.2.1
IRIX 6.5, IRIX 5.3, HP-UX A.09.05, SunOS 5.5

When loading a shared library, global structs are not initialized
properly, compared to loading from static libraries or compiled-in
code.

Consider the following program:

// t2.cc
#include <stdlib.h>
#include <stdio.h>

#ifndef MAINONLY
struct s {
    char *c;
};

#define oneone "11"		       // OK
char *twotwo = "22";		       // NOT OK

struct s foo1 = {oneone};
struct s foo2 = {twotwo};

static void foo_check(struct s array)
{
    printf ("array.c %s\n", array.c ? array.c : "(null)");
}

void callme() {
    foo_check(foo1);
    foo_check(foo2);
}
#endif // !MAINONLY

#ifndef LIBONLY
void callme();
int
main()
{
    callme();
    return 0;
    
}
#endif // !LIBONLY

// End of file


Compile and run it:
    % gcc -o t2 t2.cc
    % ./t2
    array.c 11
    array.c 22

Fine.  Now split it up into library and main:

    % gcc -fpic -o t2.o -DLIBONLY -c t2.cc
    % ld -shared -o libfoo.so t2.o
    % gcc -o t2 -DMAINONLY t2.cc -L. -lfoo
    % ./t2
    array.c 11
    array.c (null)

As you can see, the second array is no longer initialized properly.
This occurs on all versions/OS'es of gcc I have tested (see list
above), but also with the native compilers on IRIX, so I'm wondering
what is the problem here.

Anybody any hints?  Please include a CC in your response, since I'm
not subscribed to the mailinglist.

Thanks for listening.
R'