Author: pfg
Date: Wed Jun 26 04:14:19 2013
New Revision: 252231
URL: http://svnweb.freebsd.org/changeset/base/252231

Log:
  sed: use getline() instead of fgetln().
  
  In BSD, fgetln() available in libc but in Illumos the Solaris port had to
  include it internally. It also seems to have caused problems [1].
  
  Aid portability by using getline() instead.
  
  Reference:
  https://www.illumos.org/issues/3820 [1]
  
  Submitted by: Johann 'Myrkraverk' Oskarsson <joh...@myrkraverk.com>
  Reviewed by:  dds
  MFC after:    2 weeks

Modified:
  head/usr.bin/sed/main.c

Modified: head/usr.bin/sed/main.c
==============================================================================
--- head/usr.bin/sed/main.c     Wed Jun 26 04:00:52 2013        (r252230)
+++ head/usr.bin/sed/main.c     Wed Jun 26 04:14:19 2013        (r252231)
@@ -1,4 +1,5 @@
 /*-
+ * Copyright (c) 2013 Johann 'Myrkraverk' Oskarsson.
  * Copyright (c) 1992 Diomidis Spinellis.
  * Copyright (c) 1992, 1993
  *     The Regents of the University of California.  All rights reserved.
@@ -57,6 +58,7 @@ static const char sccsid[] = "@(#)main.c
 #include <locale.h>
 #include <regex.h>
 #include <stddef.h>
+#define _WITH_GETLINE
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -307,8 +309,9 @@ int
 mf_fgets(SPACE *sp, enum e_spflag spflag)
 {
        struct stat sb;
-       size_t len;
-       char *p;
+       ssize_t len;
+       static char *p = NULL;
+       static size_t plen = 0;
        int c;
        static int firstfile;
 
@@ -424,13 +427,13 @@ mf_fgets(SPACE *sp, enum e_spflag spflag
         * We are here only when infile is open and we still have something
         * to read from it.
         *
-        * Use fgetln so that we can handle essentially infinite input data.
-        * Can't use the pointer into the stdio buffer as the process space
-        * because the ungetc() can cause it to move.
+        * Use getline() so that we can handle essentially infinite input
+        * data.  The p and plen are static so each invocation gives
+        * getline() the same buffer which is expanded as needed.
         */
-       p = fgetln(infile, &len);
-       if (ferror(infile))
-               errx(1, "%s: %s", fname, strerror(errno ? errno : EIO));
+       len = getline(&p, &plen, infile);
+       if (len == -1)
+               err(1, "%s", fname);
        if (len != 0 && p[len - 1] == '\n')
                len--;
        cspace(sp, p, len, spflag);
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