1 files changed, 1 insertions, 1 deletions
diff --git a/gcc/optabs.c b/gcc/optabs.c
index 558be7d12b5..455a37d65a5 100644
--- a/gcc/optabs.c
+++ b/gcc/optabs.c
@@ -4324,7 +4324,7 @@ init_libfuncs (optable, first_mode, last_mode, opname, suffix)
       for (q = opname; *q; )
 	*p++ = *q++;
       for (q = mname; *q; q++)
-	*p++ = tolower ((unsigned char)*q);
+	*p++ = TOLOWER (*q);
       *p++ = suffix;
       *p++ = '\0';