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From: wert@cup.portal.com (robert scott comer)
Newsgroups: comp.sys.mac
Subject: Silly strcpy
Message-ID: <15380@cup.portal.com>
Date: 4 Mar 89 20:27:20 GMT
References: <IY0io5y00UgPAM2b4a@andrew.cmu.edu> <41a2364a.a590@mag.engin.umich.edu> <70755@ti-csl.csc.ti.com> <41aa5eaa.a590@mag.engin.umich.edu> <15682@versatc.UUCP> <2606@ncsuvx.ncsu.edu>
Organization: The Portal System (TM)
Lines: 24

> For general amusement, try looking at the generated code for the following
> in LightSpeed C 3.0
> 
> 	strcpy (out, in)
> 	char *out, *in;
> 	{
> 		while (*in)
> 			*out++ = *in++;
> 	}
> 
There are several problems here:

1) No register declarations (for stupid compilers), and
2) This code fails to copy the terminating null.

Better would be:

strcpy (out, in)
register char *out, *in;
{
  while (*out++ = *in++);
}

scott comer