Wolfgang Thallergcc16 merge934c3885 months agoHistory
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/* GNU Objective C Runtime nil receiver function   Copyright (C) 1993-2026 Free Software Foundation, Inc.   Contributed by Kresten Krab Thorup This file is part of GCC. GCC is free software; you can redistribute it and/or modify it under theterms of the GNU General Public License as published by the Free SoftwareFoundation; either version 3, or (at your option) any later version. GCC is distributed in the hope that it will be useful, but WITHOUT ANYWARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESSFOR A PARTICULAR PURPOSE.  See the GNU General Public License for moredetails. Under Section 7 of GPL version 3, you are granted additionalpermissions described in the GCC Runtime Library Exception, version3.1, as published by the Free Software Foundation. You should have received a copy of the GNU General Public License anda copy of the GCC Runtime Library Exception along with this program;see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see<http://www.gnu.org/licenses/>.  */  /* This is the nil method, the function that is called when the receiver   of a method is nil */ #include "objc-private/common.h"#include "objc/objc.h" /* When the receiver of a method invocation is nil, the runtime   returns nil_method() as the method implementation.  This function   will be casted to whatever function was supposed to be executed to   execute that method (that function will take an id, followed by a   SEL, followed by who knows what arguments, depends on the method),   and executed.      For this reason, nil_method() should be a function which can be   called in place of any function taking an 'id' argument followed by   a 'SEL' argument, followed by zero, or one, or any number of   arguments (both a fixed number, or a variable number !).      There is no "proper" implementation of such a nil_method function   in C, however in all existing implementations it does not matter   when extra arguments are present, so we can simply create a function   taking a receiver and a selector, and all other arguments will be   ignored. :-)*/ idnil_method (id receiver, SEL op __attribute__ ((__unused__))){  return receiver;}

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