How to find out Error-raising line (in a big function) from Error-Message

Hi!

If there is an Error in a (long) function, which is called by a forms-mask, you will get a line number in the error message.

But whenever we loaded the function into emacs or looked up the function-text in user_sources, there was no match between the Error-Line from the error-message and the line-number in emacs (or user-sources). How does oracle count lines in functions?

Or concrete: How do you find out the buggy function-line with the line-information from the error-message?

				Thanks in advance
				Frank Ruenagel