in ngetdelim(), set errno to EINVAL if stream is not a valid file

stream; this matches the manual page


git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@3617 35c25a1d-7b9e-4130-9fde-d3aeb78583b8

ChangeLog

@@ -333,6 +333,9 @@ CVS code -
 	- Unconditionally blank the statusbar as soon as we're finished
 	  getting input. (DLR, suggested by Benno Schulenberg)
 - utils.c:
+  ngetdelim()
+	- Set errno to EINVAL if stream is not a valid file stream.
+	  This matches the manual page. (DLR)
   nperror()
 	- Simplify. (DLR)
 - winio.c:

src/utils.c

@@ -197,7 +197,8 @@ ssize_t ngetdelim(char **lineptr, size_t *n, int delim, FILE *stream)
     int c;
 
     /* Sanity checks. */
-    if (lineptr == NULL || n == NULL || stream == NULL) {
+    if (lineptr == NULL || n == NULL || stream == NULL ||
+	fileno(stream) == -1) {
 	errno = EINVAL;
 	return -1;
     }