glibc 2.2.4, atexit and libc_nonshared.a

[Gérard Milmeister]

I have several libraries (like libXext.so.6.4) that are linked
against libc_nonshared.a (presumably because they need functions
not available in the shared C library), so that the symbol list
looks like this:

/usr/X11R6/lib/libXext.so:0000bcf0 T atexit

Now consider this trivial program using atexit:

#include <stdio.h>
#include <stdlib.h>

void print_exit(void)
{
    printf("Hello\n");
}

int main()
{
    atexit(print_exit);
}

If I link with "gcc atexit.c -o atexit" everything is perfect. ldd shows 
this:
        libc.so.6 => /lib/libc.so.6 (0x40033000)
        /lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x40000000)

If however I link with "gcc atexit.c /usr/X11R6/lib/libXext.so -o atexit"
the program hangs in the atexit function. It seemingly dynamically binds to
the atexit found in libXext.so.6 and not the one from libc.so.6.

I had no end of problems with software compiled that used the wrong
atexit.

--
Gérard Milmeister
Tannenrauchstr. 35
8038 Zürich
address@hidden