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-rw-r--r--utf8.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/utf8.h b/utf8.h
index bbbefdef70..b76f098fe4 100644
--- a/utf8.h
+++ b/utf8.h
@@ -349,6 +349,10 @@ Perl's extended UTF-8 means we can have start bytes up to FF.
#define UTF8_EIGHT_BIT_HI(c) UTF8_TWO_BYTE_HI((U8)(c))
#define UTF8_EIGHT_BIT_LO(c) UTF8_TWO_BYTE_LO((U8)(c))
+/* This is illegal in any well-formed UTF-8 in both EBCDIC and ASCII
+ * as it is only in overlongs. */
+#define ILLEGAL_UTF8_BYTE I8_TO_NATIVE_UTF8(0xC1)
+
/*
* 'UTF' is whether or not p is encoded in UTF8. The names 'foo_lazy_if' stem
* from an earlier version of these macros in which they didn't call the