From c5b21c3f4c17b0649155035d2f9aa97b2da8a813 Mon Sep 17 00:00:00 2001
From: Ian Lance Taylor <iant@golang.org>
Date: Fri, 30 Jul 2021 14:28:58 -0700
Subject: libgo: update to Go1.17rc2

Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/341629
---
 libgo/go/regexp/syntax/prog_test.go | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

(limited to 'libgo/go/regexp/syntax/prog_test.go')

diff --git a/libgo/go/regexp/syntax/prog_test.go b/libgo/go/regexp/syntax/prog_test.go
index 50bfa3d..5603aea 100644
--- a/libgo/go/regexp/syntax/prog_test.go
+++ b/libgo/go/regexp/syntax/prog_test.go
@@ -89,6 +89,21 @@ var compileTests = []struct {
   2	anynotnl -> 3
   3	match
 `},
+	{"(?:|a)+", `  0	fail
+  1	nop -> 4
+  2	rune1 "a" -> 4
+  3*	alt -> 1, 2
+  4	alt -> 3, 5
+  5	match
+`},
+	{"(?:|a)*", `  0	fail
+  1	nop -> 4
+  2	rune1 "a" -> 4
+  3	alt -> 1, 2
+  4	alt -> 3, 6
+  5*	alt -> 3, 6
+  6	match
+`},
 }
 
 func TestCompile(t *testing.T) {
-- 
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