Return the routine, file and line number at which an Object was
created astCreatedAt
Precisely, the information returned identifies the point at which the Object’
s public
identifier (i.e. the supplied pointer) was first issued. This may not correspond to the
actual creation of the Object if the object is contained within some higher level
Object. For instance, if the astGetFrame method is used to get a pointer to a Frame
within a FrameSet, the information returned by this function if supplied with the
Frame pointer would identify the call to astGetFrame, rather than the line
at which the FrameSet created its internal copy of the Frame. Likewise, if
this function is used to get information from an Object pointer returned by
astClone, the information will describe the call to astClone, not the call
that created the original Object.
NULL pointers and a line number of zero are returned if an error has already occurred prior to calling this function.