add ere backref regression test

[libc-test] / src / regression / regex-escaped-high-byte.c

diff --git a/src/regression/regex-escaped-high-byte.c b/src/regression/regex-escaped-high-byte.c
index 892b4a3..7a29489 100644 (file)
--- a/src/regression/regex-escaped-high-byte.c
+++ b/src/regression/regex-escaped-high-byte.c
@@ -9,6 +9,7 @@ int main(void)
        regex_t r;
        int n;
 
+       // illegal sequence (not U+00FC)
        n = regcomp(&r, "\\\xfc", 0);
        if (n != REG_BADPAT) {
                regerror(n, &r, buf, sizeof buf);