From 1a68cdaedf8e9d379dc742f8a9c6198c0cb99dc5 Mon Sep 17 00:00:00 2001
From: Szabolcs Nagy <nsz@port70.net>
Date: Sun, 22 Mar 2015 00:16:27 +0000
Subject: [PATCH] add ere backref regression test

---
 src/regression/regex-ere-backref.c       | 34 ++++++++++++++++++++++++++++++++
 src/regression/regex-escaped-high-byte.c |  1 +
 2 files changed, 35 insertions(+)
 create mode 100644 src/regression/regex-ere-backref.c

diff --git a/src/regression/regex-ere-backref.c b/src/regression/regex-ere-backref.c
new file mode 100644
index 0000000..196b25c
--- /dev/null
+++ b/src/regression/regex-ere-backref.c
@@ -0,0 +1,34 @@
+// commit 7c8c86f6308c7e0816b9638465a5917b12159e8f 2015-03-20
+// backref is not valid in ere
+#include <regex.h>
+#include "test.h"
+
+int main(void)
+{
+	char buf[200];
+	char pat[] = "(a)\\1";
+	regex_t r;
+	int n;
+
+	n = regcomp(&r, pat, REG_EXTENDED);
+	if (n) {
+		regerror(n, &r, buf, sizeof buf);
+		t_error("regcomp(%s) returned %d (%s) wanted 0\n", pat, n, buf);
+	}
+
+	n = regexec(&r, "aa", 0, 0, 0);
+	if (n != REG_NOMATCH) {
+		regerror(n, &r, buf, sizeof buf);
+		t_error("regexec(/%s/ ~ \"aa\") returned %d (%s), wanted REG_NOMATCH\n",
+			pat, n, buf);
+	}
+
+	n = regexec(&r, "a1", 0, 0, 0);
+	if (n) {
+		regerror(n, &r, buf, sizeof buf);
+		t_error("regexec(/%s/ ~ \"a1\") returned %d (%s), wanted 0\n",
+			pat, n, buf);
+	}
+
+	return t_status;
+}
diff --git a/src/regression/regex-escaped-high-byte.c b/src/regression/regex-escaped-high-byte.c
index 892b4a3..7a29489 100644
--- 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);
-- 
2.11.4.GIT