From Bugzilla Helper:
User-Agent: Mozilla/4.78 [en] (X11; U; Linux 2.4.9-21 i686)

Description of problem:
If you dlopen a library, dlsym will successfully return
a pointer to symbols from not just the opened lib, but
any dependency libs. This may be more a feature than bug.
IRIX's dlsym will only return symbols from the dlopened
lib. I think that's how it is supposed to work.

Version-Release number of selected component (if applicable):


How reproducible:
Always

Steps to Reproduce:
1. printf("XNextEvent via libGL=%x\n",
    dlsym(dlopen("libGL.so", RTLD_LAZY | RTLD_LOCAL ), "XNextEvent"));
2.
3.
	

Actual Results:  XNextEvent via GL=4021d564


Expected Results:  XNextEvent via GL=0


Additional info:

It doesn't matter which dlopen flags I use. I can even get at
_dl_init from /lib/ld-linux.so.6, which is a second level of
dependency via libc.so.

Here is a simple example test code:

#include <dlfcn.h>
#include <stdio.h>

int main(int argc, char *argv[]){

    void *GL_handle, *func;

    GL_handle = dlopen("libGL.so", RTLD_LAZY | RTLD_LOCAL );
    printf("GL Handle=%x [dlerror=%s]\n",GL_handle,dlerror());

    func = dlsym(GL_handle, "XNextEvent");
    printf("XNextEvent via GL =%x [dlerror=%s]\n",func,dlerror());

    func = dlsym(GL_handle, "_dl_init");
    printf("_dl_init via GL =%x [dlerror=%s]\n",func,dlerror());

}