graph view becomes a mess, just like figure 3-41 shows.
Figure 3-41 Xrefs graph to...
In figure 3-41, the irregular patterns in black are constructed by lines; lines are melting
together on both sides. So we know the symbol _objc_msgSendSuper2_stret is cross-referenced
many times.
Relatively, if we choose “Xrefs graph from...” , it will show all symbols cross referenced by
the symbol you choose, as shown in figure 3-42.
Figure 3-42 Xrefs graph from...
From figure 3-42 we know that sub_1DC1C is a subroutine, it cross-references
j__objc_msgSend, _OBJCCLASS$_UIApplication and _objc_msgSend explicitly, and
_objc_msgSend further cross-references impobjc_msgSend explicitly. Double click
_objc_msgSend in main window, then double click impobjc_msgSend, you will see it is
from libobjc.A.dylib, as shown in figure 3-43.