tradcpp.c (do_define): Make sure we don't walk past limit.

	* tradcpp.c (do_define): Make sure we don't walk past limit.

	* gcc.dg/cpp/tr-define.c: New test.

From-SVN: r41773

gcc/ChangeLog

+2001-05-02  Jakub Jelinek  <jakub@redhat.com>
+
+	* tradcpp.c (do_define): Make sure we don't walk past limit.
+
 2000-05-01  Franz Sirl  <Franz.Sirl-kernel@lauterbach.com>
 
 	* config/rs6000/rs6000.c (rs6000_legitimate_address): Allow any stack

gcc/testsuite/ChangeLog

+2001-05-02  Jakub Jelinek  <jakub@redhat.com>
+
+	* gcc.dg/cpp/tr-define.c: New test.
+
 2001-05-01  Loren J. Rittle  <ljrittle@acm.org>
 
 	* g++.old-deja/g++.abi/cxa_vec.C: Get malloc() from

gcc/testsuite/gcc.dg/cpp/tr-define.c

+/* { dg-do preprocess } */
+/* { dg-options "-traditional -DDEFINE1DEFINE -DDEFINE2DEFIN=" } */

gcc/tradcpp.c

@@ -2671,7 +2671,7 @@ do_define (buf, limit, op)
     }
 
     ++bp;					/* skip paren */
-    while (is_nvspace (*bp))	/* and leading whitespace */
+    while (is_nvspace (*bp) && bp < limit)	/* and leading whitespace */
       ++bp;
     /* now everything from bp before limit is the definition. */
     defn = collect_expansion (bp, limit, argno, arg_ptrs);
@@ -2698,7 +2698,7 @@ do_define (buf, limit, op)
     }
   } else {
     /* simple expansion or empty definition; skip leading whitespace */
-    while (is_nvspace (*bp))
+    while (is_nvspace (*bp) && bp < limit)
       ++bp;
     /* now everything from bp before limit is the definition. */
     defn = collect_expansion (bp, limit, -1, 0);