fread() returns 0 on eof or error, not EOF. This fixes the following
bug: "head -c <n>" never exit and loops forever (until it is killed), if the input stream has fewer bytes than specified (n). PR: bin/8225 Submitted-by: FUJIMOTO Kensaku <fujimoto@oscar.elec.waseda.ac.jp>
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=40114
@ -42,7 +42,7 @@ static const char copyright[] =
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static char sccsid[] = "@(#)head.c 8.2 (Berkeley) 5/4/95";
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#endif
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static const char rcsid[] =
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"$Id: head.c,v 1.7 1997/07/10 06:46:13 charnier Exp $";
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"$Id: head.c,v 1.8 1997/07/11 06:13:18 charnier Exp $";
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#endif /* not lint */
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#include <sys/types.h>
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@ -157,7 +157,7 @@ head_bytes(fp, cnt)
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else
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readlen = sizeof(buf);
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readlen = fread(buf, sizeof(char), readlen, fp);
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if (readlen == EOF)
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if (readlen == 0)
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break;
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if (fwrite(buf, sizeof(char), readlen, stdout) != readlen)
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err(1, "stdout");
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