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bug#23640: 25.1.50; Getting rid of compiler warnings

From: Richard Stallman
Subject: bug#23640: 25.1.50; Getting rid of compiler warnings
Date: Thu, 02 Jun 2016 23:35:49 -0400

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  > Yes, we could have separate macros for each data type requiring 
  > syntactically different initializers. Something like this, say:

  >      int n UNUSED_0;
  >      Lisp_Object obj UNUSED_Qnil;

Actually, one single macro UNUSED will work for integers
and Lisp_Object:

#define UNUSED = {0}

int n UNUSED;
Lisp_Object obj UNUSED;

Dr Richard Stallman
President, Free Software Foundation (gnu.org, fsf.org)
Internet Hall-of-Famer (internethalloffame.org)
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