emit-rtl.c (mark_label_nuses): Check that a LABEL_REF refers to a label before…

emit-rtl.c (mark_label_nuses): Check that a LABEL_REF refers to a label before updating its usage count.

	* emit-rtl.c (mark_label_nuses): Check that a LABEL_REF refers to
	a label before updating its usage count.

From-SVN: r77640

gcc/ChangeLog

+2004-02-11  Richard Sandiford  <rsandifo@redhat.com>
+
+	* emit-rtl.c (mark_label_nuses): Check that a LABEL_REF refers to
+	a label before updating its usage count.
+
 2004-02-10  Matt Kraai  <kraai@alumni.cmu.edu>
 
         * doc/install.texi: Remove extra cd.

gcc/emit-rtl.c

@@ -3133,7 +3133,7 @@ mark_label_nuses (rtx x)
   const char *fmt;
 
   code = GET_CODE (x);
-  if (code == LABEL_REF)
+  if (code == LABEL_REF && LABEL_P (XEXP (x, 0)))
     LABEL_NUSES (XEXP (x, 0))++;
 
   fmt = GET_RTX_FORMAT (code);