tree.h (lang_identify): Constify a char*.

        * tree.h (lang_identify): Constify a char*.
        (print_error_function): Add extern prototype.  Constify a char*.

        * c-lang.c (lang_identify): Constify a char*.

        * objc/objc-act.c (lang_identify): Constify a char*.

From-SVN: r28631

gcc/ChangeLog

+Mon Aug  9 19:36:00 1999  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
+
+	* tree.h (lang_identify): Constify a char*.
+	(print_error_function): Add extern prototype.  Constify a char*.
+
+	* c-lang.c (lang_identify): Constify a char*.
+
+	* objc/objc-act.c (lang_identify): Constify a char*.
+
 Mon Aug  9 16:21:53 1999  Bernd Schmidt  <bernds@cygnus.co.uk>
 
 	* genpeep.c (main): Make generated file include "function.h".

gcc/c-lang.c

@@ -75,7 +75,7 @@ lang_finish ()
 {
 }
 
-char *
+const char *
 lang_identify ()
 {
   return "c";

gcc/objc/objc-act.c

@@ -682,7 +682,7 @@ lang_finish ()
 {
 }
 
-char *
+const char *
 lang_identify ()
 {
   return "objc";

gcc/tree.h

@@ -2077,7 +2077,11 @@ extern void lang_init				PROTO((void));
 extern void lang_finish				PROTO((void));
 
 /* Function to identify which front-end produced the output file. */
-extern char *lang_identify			PROTO((void));
+extern const char *lang_identify			PROTO((void));
+
+/* Called by report_error_function to print out function name.
+ * Default may be overridden by language front-ends.  */
+extern void (*print_error_function) PROTO((const char *));
 
 /* Function to replace the DECL_LANG_SPECIFIC field of a DECL with a copy.  */
 extern void copy_lang_decl			PROTO((tree));