From b6319e4d493bbec2650b59a05ed666c34ddf4e58 Mon Sep 17 00:00:00 2001
From: ceriel <none@none>
Date: Mon, 9 Nov 1992 14:30:28 +0000
Subject: [PATCH] Yet another bug: null reference

---
 lang/m2/comp/casestat.C | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/lang/m2/comp/casestat.C b/lang/m2/comp/casestat.C
index bb38b686f..8cf73a0c6 100644
--- a/lang/m2/comp/casestat.C
+++ b/lang/m2/comp/casestat.C
@@ -162,7 +162,7 @@ CaseCode(nd, exitlabel, end_reached)
 				if (val == ce->ce_up) {
 					gen = 0;
 					ce = ce->ce_next;
-					while (! ce->ce_label) ce = ce->ce_next;
+					while (ce && ! ce->ce_label) ce = ce->ce_next;
 				}
 			}
 			else if (sh->sh_default) C_rom_ilb(sh->sh_default);
@@ -331,14 +331,6 @@ AddOneCase(sh, lnode, rnode, lbl)
 		   find the proper place to put ce into the list
 		*/
 		
-		if (ce->ce_label) {
-			if (! chk_bounds(sh->sh_lowerbd, ce->ce_low, fund)) {
-				sh->sh_lowerbd = ce->ce_low;
-			}
-			if (! chk_bounds(ce->ce_up, sh->sh_upperbd, fund)) {
-				sh->sh_upperbd = ce->ce_up;
-			}
-		}
 		while (c1 && chk_bounds(c1->ce_low, ce->ce_low, fund)) {
 			c2 = c1;
 			c1 = c1->ce_next;
@@ -380,6 +372,14 @@ node_error(rnode, "multiple case entry for value %ld", (long)(ce->ce_up));
 
 			c2->ce_next = ce;
 		}
+		if (ce->ce_label) {
+			if (! chk_bounds(sh->sh_lowerbd, ce->ce_low, fund)) {
+				sh->sh_lowerbd = ce->ce_low;
+			}
+			if (! chk_bounds(ce->ce_up, sh->sh_upperbd, fund)) {
+				sh->sh_upperbd = ce->ce_up;
+			}
+		}
 	}
 	if (ce->ce_label) sh->sh_nrofentries += ce->ce_up - ce->ce_low + 1;
 }