Anyone know some reasonably portable way to determine the return address of a function?

["George T. Talbot" <george at moberg dot com>]

I'm working on some library code in Linux, and, for debugging purposes, I'd
like to be able to call dlinfo() on the return address of a function in my
library so that I can track usage of the function:

#define	magic()		...woudln't I like to know...

void	some_library_function(void)
{
	void*	return_address = magic();
	Dl_info	info;

	if (dlinfo(return_address, &info))
		fprintf(some_log_file, "some_library_function() called from %s in executable
%s.\n",
			info.dli_sname, info.dli_fname);
	else
		fprintf(some_log_file, "some_library_function() called from unknown
caller.\n");


	...do the actual work...
}

-----
void	some_code(void)
{
	...
	some_library_function();
	...
}


In other words, I want magic() above to return the address in some_code()
where some_library_function() was called.

Please cc: me if you post a reply to the list, in case I miss your reply.
--
George T. Talbot
<george at moberg dot com>