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Subject: Re: any #define experts out there?
To: spaz@u.washington.edu (John Utz)
Date: Sun, 18 Dec 1994 21:07:28 +0300 (MSK)
Cc: FreeBSD-hackers@freefall.cdrom.com
In-Reply-To: <Pine.OSF.3.91a.941216000248.2659A-100000@saul1.u.washington.edu> from "John Utz" at Dec 16, 94 00:05:13 am
From: dima@demos.su (Dima Ruban)
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John Utz writes:
> 
> HI folks;
> 
> any reason why this define should crash gcc?

I did, but nothing wrong. Here goes logfile.

> 
> #define	NUMELEMS(ARRAY)	sizeof(ARRAY)/sizeof(*ARRAY)
> 
> suggestions are more then welcome...

[deep-thought]-pc:1> cat x.c
#define	NUMELEMS(ARRAY)	sizeof(ARRAY)/sizeof(*ARRAY)

main()
{
	int	foo[5];
	printf("%d\n", NUMELEMS(foo));
}
[deep-thought]-pc:2> cc -O x.c
[deep-thought]-pc:3> ./a.out
5
[deep-thought]-pc:4> cc x.c
[deep-thought]-pc:5> ./a.out
5
[deep-thought]-pc:6> cc -v
gcc version 2.6.2

> 
> *******************************************************************************
>  John Utz	spaz@stein.u.washington.edu
> 	idiocy is the impulse function in the convolution of life
> 
> 

-- dima