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Date: Mon, 07 Oct 2002 03:26:00 -0000
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From: Neil Booth <neil@daikokuya.co.uk>
Subject: Re: preprocessor/8139: Bad new INT64_C macro
Reply-To: Neil Booth <neil@daikokuya.co.uk>
X-SW-Source: 2002-10/txt/msg00248.txt.bz2
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The following reply was made to PR preprocessor/8139; it has been noted by GNATS.

From: Neil Booth <neil@daikokuya.co.uk>
To: Philippe RIBET <philippe_ribet@hotmail.com>
Cc: gcc-gnats@gcc.gnu.org, gcc-prs@gcc.gnu.org, gcc-bugs@gcc.gnu.org,
	nobody@gcc.gnu.org
Subject: Re: preprocessor/8139: Bad new INT64_C macro
Date: Mon, 7 Oct 2002 11:17:48 +0100

 Philippe RIBET wrote:-
 
 > >What is the new definition?  What is this macro?
 > 
 > Old macro was:
 > 
 > # if __WORDSIZE == 64
 > #  define INT64_C(c)    c ## L
 > # else
 > #  define INT64_C(c)    c ## LL
 > # endif
 > 
 > New macro is:
 > #define INT64_C(val) (INT_LEAST64_MAX-INT_LEAST64_MAX+(val))
 
 But what is defining this macro?  GCC, or your system?  I don't
 think it really matters, though.
 
 Remember that with the new macro the token does not have L or LL
 appended, and therefore has type int (before promotions) in an
 arithmetic expression.  This is what is causing the warning -
 the integer is too big.  You should probably add L or LL as
 appropriate to your constants.
 
 Neil.