1 files changed, 2 insertions, 2 deletions
diff --git a/gcc/cccp.c b/gcc/cccp.c
index 16def7a..4a90648 100644
--- a/gcc/cccp.c
+++ b/gcc/cccp.c
@@ -10131,9 +10131,9 @@ initialize_char_syntax ()
    * refer to them.
    */
   for (i = 'a'; i <= 'z'; i++) {
-    is_idchar[toupper(i)] = 1;
+    is_idchar[TOUPPER(i)] = 1;
     is_idchar[i] = 1;
-    is_idstart[toupper(i)] = 1;
+    is_idstart[TOUPPER(i)] = 1;
     is_idstart[i] = 1;
   }
   for (i = '0'; i <= '9'; i++)