toplev.c (output_file_directive): Allow for null input_name.

2003-10-22  Andrew Haley  <aph@redhat.com>

	* toplev.c (output_file_directive): Allow for null input_name.

From-SVN: r72847

gcc/ChangeLog

+2003-10-22  Andrew Haley  <aph@redhat.com>
+
+	* toplev.c (output_file_directive): Allow for null input_name.
+
 2003-10-22  Waldek Hebisch <hebisch@math.uni.wroc.pl>
 
 	* config/i386/i386.c (classify_argument): Handle SET_TYPE.

gcc/toplev.c

@@ -1444,8 +1444,14 @@ output_quoted_string (FILE *asm_file, const char *string)
 void
 output_file_directive (FILE *asm_file, const char *input_name)
 {
-  int len = strlen (input_name);
-  const char *na = input_name + len;
+  int len;
+  const char *na;
+  
+  if (input_name == NULL)
+    input_name = "<stdin>";
+
+  len = strlen (input_name);
+  na = input_name + len;
 
   /* NA gets INPUT_NAME sans directory names.  */
   while (na > input_name)