cpplib.c (do_define): Allow redefining __STDC__ with -D.

1999-02-09 10:30 -0500  Zack Weinberg  <zack@rabi.columbia.edu>
	* cpplib.c (do_define): Allow redefining __STDC__ with -D.

From-SVN: r25109

gcc/ChangeLog

+1999-02-09 10:30 -0500  Zack Weinberg  <zack@rabi.columbia.edu>
+
+	* cpplib.c (do_define): Allow redefining __STDC__ with -D.
+
 1999-02-09  Jim Blandy  <jimb@zwingli.cygnus.com>
 
 	* configure.in: For PowerPC configurations, accept "401", "ec603e",

gcc/cpplib.c

@@ -1410,7 +1410,7 @@ do_define (pfile, keyword)
       else if (hp->type == T_MACRO)
 	ok = ! compare_defs (pfile, mdef.defn, hp->value.defn);
       /* Redefining a constant is ok with -D.  */
-      else if (hp->type == T_CONST)
+      else if (hp->type == T_CONST || hp->type == T_STDC)
         ok = ! CPP_OPTIONS (pfile)->done_initializing;
       /* Print the warning if it's not ok.  */
       if (!ok)