diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index c448f0fedcf..27dc939437e 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+Sun Nov 28 00:48:15 1999  Philippe De Muyter  <phdm@macqel.be>
+
+	* integrate.c (mark_stores): Function definition made void, to match
+	previous declaration.
+	* regclass.c (dump_regclass): Ditto.
+	* Makefile.in (WARN_CFLAGS): Macro augmented by `-Wtraditional'.
+
 Sat Nov 27 08:38:26 1999  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>
 
 	* expr.c (store_constructor): Use EXACT_DIV_EXPR when dividend is
diff --git a/gcc/Makefile.in b/gcc/Makefile.in
index 9bebc1733af..17a6a2bfef1 100644
--- a/gcc/Makefile.in
+++ b/gcc/Makefile.in
@@ -70,7 +70,7 @@ XCFLAGS =
 TCFLAGS =
 CFLAGS = -g @stage1_warn_cflags@
 BOOT_CFLAGS = -O2 $(CFLAGS)
-WARN_CFLAGS = -W -Wall
+WARN_CFLAGS = -W -Wall -Wtraditional
 # These exists to be overridden by the x-* and t-* files, respectively.
 X_CFLAGS =
 T_CFLAGS =
diff --git a/gcc/integrate.c b/gcc/integrate.c
index 5acc2d1481f..f8253095872 100644
--- a/gcc/integrate.c
+++ b/gcc/integrate.c
@@ -2353,7 +2353,7 @@ subst_constants (loc, insn, map, memonly)
 /* Show that register modified no longer contain known constants.  We are
    called from note_stores with parts of the new insn.  */
 
-void
+static void
 mark_stores (dest, x, data)
      rtx dest;
      rtx x ATTRIBUTE_UNUSED;
diff --git a/gcc/regclass.c b/gcc/regclass.c
index cba13c48033..ea608f82202 100644
--- a/gcc/regclass.c
+++ b/gcc/regclass.c
@@ -772,7 +772,7 @@ regclass_init ()
 }
 
 /* Dump register costs.  */
-void
+static void
 dump_regclass (dump)
      FILE *dump;
 {