diff --git a/tccgen.c b/tccgen.c
index 398e165..6f7cf1f 100644
--- a/tccgen.c
+++ b/tccgen.c
@@ -4881,8 +4881,12 @@ static void label_or_decl(int l)
     decl(l);
 }
 
-static int case_cmp(const void *a, const void *b)
-{ return (*(struct case_t**) a)->v1 - (*(struct case_t**) b)->v1; }
+static int case_cmp(const void *pa, const void *pb)
+{
+    int a = (*(struct case_t**) pa)->v1;
+    int b = (*(struct case_t**) pb)->v1;
+    return a < b ? -1 : a > b;
+}
 
 static void block(int *bsym, int *csym, int is_expr)
 {
diff --git a/tests/tcctest.c b/tests/tcctest.c
index 9a4d0ef..5e9b07f 100644
--- a/tests/tcctest.c
+++ b/tests/tcctest.c
@@ -1554,6 +1554,9 @@ void switch_test()
         case 3:
             printf("b");
             break;
+        case 0xc33c6b9fU:
+        case 0x7c9eeeb9U:
+            break;
         }
     }
     printf("\n");