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-rw-r--r--ctype/ctype.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/ctype/ctype.c b/ctype/ctype.c
index f9ceb35c08..1c684026fe 100644
--- a/ctype/ctype.c
+++ b/ctype/ctype.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 1992, 1997 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 1992, 1997, 1999 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -39,11 +39,11 @@ func (isxdigit, _ISxdigit)
int
tolower (int c)
{
- return __tolower (c);
+ return __c >= -128 && __c < 256 ? __tolower (__c) : __c;
}
int
toupper (int c)
{
- return __toupper (c);
+ return __c >= -128 && __c < 256 ? __toupper (__c) : __c;
}