Use module 'EOVERFLOW' rather than defining an EOVERFLOW replacement in the C

[pspp] / lib / getdelim.c

diff --git a/lib/getdelim.c b/lib/getdelim.c
index e0b8a708ba7d4bb8b66e1f7629bc852e77451f19..2e127fcaaa2bf0e3dc934b1c1528444c26a74c4f 100644 (file)
--- a/lib/getdelim.c
+++ b/lib/getdelim.c
@@ -1,5 +1,5 @@
 /* getdelim.c --- Implementation of replacement getdelim function.
-   Copyright (C) 1994, 1996, 1997, 1998, 2001, 2003, 2005, 2006 Free
+   Copyright (C) 1994, 1996, 1997, 1998, 2001, 2003, 2005, 2006, 2007, 2008 Free
    Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or
@@ -21,7 +21,7 @@
 
 #include <config.h>
 
-#include "getdelim.h"
+#include <stdio.h>
 
 #include <limits.h>
 #include <stdlib.h>
@@ -64,13 +64,15 @@ getdelim (char **lineptr, size_t *n, int delimiter, FILE *fp)
 
   if (*lineptr == NULL || *n == 0)
     {
+      char *new_lineptr;
       *n = 120;
-      *lineptr = (char *) malloc (*n);
-      if (*lineptr == NULL)
+      new_lineptr = (char *) realloc (*lineptr, *n);
+      if (new_lineptr == NULL)
        {
          result = -1;
          goto unlock_return;
        }
+      *lineptr = new_lineptr;
     }
 
   for (;;)
@@ -97,6 +99,7 @@ getdelim (char **lineptr, size_t *n, int delimiter, FILE *fp)
          if (cur_len + 1 >= needed)
            {
              result = -1;
+             errno = EOVERFLOW;
              goto unlock_return;
            }
 
@@ -121,6 +124,7 @@ getdelim (char **lineptr, size_t *n, int delimiter, FILE *fp)
   result = cur_len ? cur_len : result;
 
  unlock_return:
-  funlockfile (fp);
+  funlockfile (fp); /* doesn't set errno */
+
   return result;
 }