From 6ff89a0a45c68b86e20818023df4407e1d524e2f Mon Sep 17 00:00:00 2001
From: otto <>
Date: Fri, 2 Apr 2021 14:20:57 +0000
Subject: Two cases of BRE involving counts and backrefs that go wrong and
 similar that have no isssues. Reported by Michael Paoli.  Failing cases
 commented out for now.

---
 src/regress/lib/libc/regex/tests | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/regress/lib/libc/regex/tests b/src/regress/lib/libc/regex/tests
index f400b8575b..f3fd9d0e6b 100644
--- a/src/regress/lib/libc/regex/tests
+++ b/src/regress/lib/libc/regex/tests
@@ -1,4 +1,4 @@
-#	$OpenBSD: tests,v 1.9 2020/12/28 21:41:55 millert Exp $
+#	$OpenBSD: tests,v 1.10 2021/04/02 14:20:57 otto Exp $
 #	$NetBSD: tests,v 1.5 1995/04/20 22:40:00 cgd Exp $
 
 # regular expression test set
@@ -595,3 +595,18 @@ a?b	-	ab	ab
 # FreeBSD PR 130504
 (.|())(b)	-	ab	ab
 (()|.)(b)	-	ab	ab
+
+# Some BRE cases where \{0,\} makes a backref go wrong, as reported by Michael Paoli
+Y*\(x\)\1	b	YYxx	YYxx
+Y\{2,\}\(x\)\1	b	YYxx	YYxx
+# Fails currently
+#Y\{0,\}\(x\)\1	b	YYxx	YYxx
+Y\{0,\}\(x\)	b	YYxx	YYx
+Y\{2,\}x\{1,\}	b	YYxx	YYxx
+Y\{2,\}x\{0,\}z	b	YYxxz	YYxxz
+Y\{0,\}x\{0,\}z	b	YYxxz	YYxxz
+Y\{2,\}\(xy\)\1	b	YYxyxy	YYxyxy
+# Fails currently
+#Y\{0,\}\(xy\)\1	b	YYxyxy	YYxyxy
+Y*\(xy\)\1	b	YYxyxy	YYxyxy
+Y\{0,\}\(xy\)xy	b	YYxyxy	YYxyxy
-- 
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