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/*
* This source file is in the public domain.
* Garrett A. Wollman, 2002-05-28.
*
* $FreeBSD$
*/
#include <dlfcn.h>
/*
* Implement the dlfunc() interface, which behaves exactly the same as
* dlsym() except that it returns a function pointer instead of a data
* pointer. This can be used by applications to avoid compiler warnings
* about undefined behavior, and is intended as prior art for future
* POSIX standardization. This function requires that all pointer types
* have the same representation, which is true on all platforms FreeBSD
* runs on, but is not guaranteed by the C standard.
*/
dlfunc_t
dlfunc(void * __restrict handle, const char * __restrict symbol)
{
union {
void *d;
dlfunc_t f;
} rv;
rv.d = dlsym(handle, symbol);
return (rv.f);
}
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