1 files changed, 2 insertions, 2 deletions
diff --git a/gcc/cexp.y b/gcc/cexp.y
index e7372aa..410f671 100644
--- a/gcc/cexp.y
+++ b/gcc/cexp.y
@@ -1113,9 +1113,9 @@ initialize_random_junk ()
    * refer to them.
    */
   for (i = 'a'; i <= 'z'; i++) {
-    ++is_idchar[toupper(i)];
+    ++is_idchar[TOUPPER(i)];
     ++is_idchar[i];
-    ++is_idstart[toupper(i)];
+    ++is_idstart[TOUPPER(i)];
     ++is_idstart[i];
   }
   for (i = '0'; i <= '9'; i++)