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From: Alexey Izbyshev <izbyshev@ispras.ru>
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Subject: Re: Bug in gets function?
Date: Thu, 14 Feb 2019 00:39:07 +0300
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Cc: Rich Felker <dalias@aerifal.cx>, Rich Felker <dalias@libc.org>
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On 2019-02-12 19:30, Rich Felker wrote:
> Here's an alternate proposal via direct implementation:
> 
> char *gets(char *s)
> {
> 	size_t i=0;
> 	int c;
> 	FLOCK(stdin);
> 	while ((c=getc_unlocked(stdin)) != EOF && c != '\n') s[i++] = c;
> 	s[i] = 0;
> 	if (c != '\n' && !feof(stdin)) s = 0;
> 	FUNLOCK(stdin);
> 	return s;
> }
> 
> Does this look ok? Of course it's slow compared to a fgets-like
> operation on the buffer, but gets is not a usable interface and I
> don't see any reason to care whether it's fast.
> 
gets() must also return NULL if EOF is reached and no bytes were read.

Alexey