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how do you p(print) a CGFLoat in Xcode gdb:
gdb p (CGFloat) [[self view] center].x
Result:
Unable to call function “objc_msgSend” at 0x184e08c: no return type information available.
To call this function anyway, you can cast the return type explicitly (e.g. ‘print (float) fabs (3.0)’)
You have to cast all objective-c method calls when using GDB.