1. mild deprecation notice

2. point to getline (suggested by nicm@)
3. cross reference fgetc(3) rather than putc(3)
4. add missing error handling to the example code

OK nicm@

diff --git a/lib/libc/stdio/fgetln.3 b/lib/libc/stdio/fgetln.3
index a6f4af0..6cd9c5c 100644 (file)
--- a/lib/libc/stdio/fgetln.3
+++ b/lib/libc/stdio/fgetln.3
@@ -1,4 +1,4 @@
-.\"    $OpenBSD: fgetln.3,v 1.17 2015/01/13 14:02:30 schwarze Exp $
+.\"    $OpenBSD: fgetln.3,v 1.18 2017/07/04 15:33:03 schwarze Exp $
 .\"
 .\" Copyright (c) 1990, 1991, 1993
 .\"    The Regents of the University of California.  All rights reserved.
@@ -27,7 +27,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd $Mdocdate: January 13 2015 $
+.Dd $Mdocdate: July 4 2017 $
 .Dt FGETLN 3
 .Os
 .Sh NAME
@@ -38,6 +38,11 @@
 .Ft char *
 .Fn fgetln "FILE *stream" "size_t *len"
 .Sh DESCRIPTION
+Using this function is error-prone in multiple ways;
+consider using the safer and more portable function
+.Xr getline 3
+instead.
+.Pp
 The
 .Fn fgetln
 function returns a pointer to the next line from the stream referenced by
@@ -103,10 +108,11 @@ or
 .Xr realloc 3 .
 .Sh SEE ALSO
 .Xr ferror 3 ,
+.Xr fgetc 3 ,
 .Xr fgets 3 ,
 .Xr fopen 3 ,
 .Xr fparseln 3 ,
-.Xr putc 3
+.Xr getline 3
 .Sh HISTORY
 The
 .Fn fgetln
@@ -139,4 +145,6 @@ temporary buffer:
                printf("%s\en", buf);
        }
        free(lbuf);
+       if (ferror(fp))
+               err(1, "fgetln");
 .Ed