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Fix incorrect example (what happens when len == 0?)

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This commit is contained in:
christos 2014-06-19 14:27:50 +00:00
parent 2943d72a5a
commit 52e916d949
1 changed files with 7 additions and 15 deletions
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22
lib/libc/stdio/fgetln.3
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@ -1,4 +1,4 @@
.\" $NetBSD: fgetln.3,v 1.14 2004/05/10 17:15:28 drochner Exp $
.\" $NetBSD: fgetln.3,v 1.15 2014/06/19 14:27:50 christos Exp $
.\"
.\" Copyright (c) 1990, 1991, 1993
.\" The Regents of the University of California. All rights reserved.
@ -29,7 +29,7 @@
.\"
.\" @(#)fgetln.3 8.3 (Berkeley) 4/19/94
.\"
.Dd April 21, 2004
.Dd June 19, 2014
.Dt FGETLN 3
.Os
.Sh NAME
@ -134,22 +134,14 @@ temporary buffer:
char *buf, *lbuf;
size_t len;
lbuf = NULL;
while ((buf = fgetln(fp, &len))) {
if (buf[len - 1] == '\en')
while ((lbuf = buf = fgetln(fp, &len)) != NULL) {
if (len > 0 && buf[len - 1] == '\en')
buf[len - 1] = '\e0';
else {
if ((lbuf = (char *)malloc(len + 1)) == NULL)
else if ((lbuf = strndup(buf, len + 1)) == NULL)
err(1, NULL);
memcpy(lbuf, buf, len);
lbuf[len] = '\e0';
buf = lbuf;
}
printf("%s\en", buf);
printf("%s\en", lbuf);
if (lbuf != NULL) {
if (lbuf != buf)
free(lbuf);
lbuf = NULL;
}
}
.Ed