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-rw-r--r--libc/sysdeps/linux/common/bits/uClibc_ctype.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/common/bits/uClibc_ctype.h b/libc/sysdeps/linux/common/bits/uClibc_ctype.h
index 43371286b..22d2df03a 100644
--- a/libc/sysdeps/linux/common/bits/uClibc_ctype.h
+++ b/libc/sysdeps/linux/common/bits/uClibc_ctype.h
@@ -103,12 +103,14 @@ __BEGIN_DECLS
/* Now some non-ansi/iso c99 macros. */
+#ifndef __UCLIBC_SUSV4_LEGACY__
#define __isascii(c) (((c) & ~0x7f) == 0)
#define __toascii(c) ((c) & 0x7f)
/* Works correctly *only* on lowercase letters! */
#define _toupper(c) ((c) ^ 0x20)
/* Works correctly *only* on letters (of any case) and numbers */
#define _tolower(c) ((c) | 0x20)
+#endif
__END_DECLS