On Mon, 20 Jun 2022 17:59:35 +0900
Takashi Yano wrote:
> Isn't this a bug of newlib? Try following code.
>
> #include <stdio.h>
>
> int main()
> {
> printf("%d\n", getchar());
> printf("%d\n", feof(stdin));
> printf("%d\n", getchar());
> return 0;
> }
>
> If you press Ctrl-D at the first getchar(), the second getchar()
> does not return EOF while it does in linux.
>
> The following patch seems to resolve the issue.
>
> diff --git a/newlib/libc/stdio/refill.c b/newlib/libc/stdio/refill.c
> index ccedc7af7..843163b7e 100644
> --- a/newlib/libc/stdio/refill.c
> +++ b/newlib/libc/stdio/refill.c
> @@ -47,11 +47,9 @@ __srefill_r (struct _reent * ptr,
>
> fp->_r = 0; /* largely a convenience for callers */
>
> -#ifndef __CYGWIN__
> /* SysV does not make this test; take it out for compatibility */
> if (fp->_flags & __SEOF)
> return EOF;
> -#endif
>
> /* if not already reading, have to be reading and writing */
> if ((fp->_flags & __SRD) == 0)
>
> However, I am not sure what this #ifndef __CYGWIN__ is for.
Ah, I confirmed that System V (Solaris 11.4) behaves like that.
Does cygwin aim for System V compatibility???
--
Takashi Yano <takashi.y...@nifty.ne.jp>
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