Aliasing error in man page?

[Andrew Haley]

This is "man dlopen" ;

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

int main(int argc, char **argv) {
    void *handle;
    double (*cosine)(double);
    char *error;

    handle = dlopen ("libm.so", RTLD_LAZY);
    if (!handle) {
        fprintf (stderr, "%s\n", dlerror());
        exit(1);
    }

    dlerror();    /* Clear any existing error */
-----------------------------------------------------------------------
    *(void **) (&cosine) = dlsym(handle, "cos");
-----------------------------------------------------------------------
    if ((error = dlerror()) != NULL)  {
        fprintf (stderr, "%s\n", error);
        exit(1);
    }

    printf ("%f\n", (*cosine)(2.0));
    dlclose(handle);
    return 0;
}

That is a strict-aliasing error, is it?

Andrew.