Update re2

third_party/re2/re2/testing/set_test.cc

 // Copyright 2010 The RE2 Authors.  All Rights Reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <vector>
 
 #include "util/test.h"
 #include "re2/re2.h"
@@ skipping 53 matching lines @@
   CHECK_EQ(v.size(), 1);
   CHECK_EQ(v[0], 0);
 
   v.clear();
   CHECK_EQ(s.Match("oobar", &v), false);
   CHECK_EQ(v.size(), 0);
 }
 
 TEST(Set, UnanchoredDollar) {
   RE2::Set s(RE2::DefaultOptions, RE2::UNANCHORED);
-  
+
   CHECK_EQ(s.Add("foo$", NULL), 0);
   CHECK_EQ(s.Compile(), true);
-  
+
   vector<int> v;
   CHECK_EQ(s.Match("foo", &v), true);
   CHECK_EQ(v.size(), 1);
   CHECK_EQ(v[0], 0);
 }
 
 TEST(Set, Anchored) {
   RE2::Set s(RE2::DefaultOptions, RE2::ANCHOR_BOTH);
 
   CHECK_EQ(s.Add("foo", NULL), 0);
@@ skipping 12 matching lines @@
   CHECK_EQ(s.Match("oobar", &v), false);
   CHECK_EQ(v.size(), 0);
 
   CHECK_EQ(s.Match("foo", &v), true);
   CHECK_EQ(v.size(), 1);
   CHECK_EQ(v[0], 0);
 
   CHECK_EQ(s.Match("bar", &v), true);
   CHECK_EQ(v.size(), 1);
   CHECK_EQ(v[0], 1);
+}
 
+TEST(Set, EmptyUnanchored) {
+  RE2::Set s(RE2::DefaultOptions, RE2::UNANCHORED);
+
+  CHECK_EQ(s.Compile(), true);
+
+  vector<int> v;
+  CHECK_EQ(s.Match("", &v), false);
+  CHECK_EQ(v.size(), 0);
+
+  v.clear();
+  CHECK_EQ(s.Match("foobar", &v), false);
+  CHECK_EQ(v.size(), 0);
+}
+
+TEST(Set, EmptyAnchored) {
+  RE2::Set s(RE2::DefaultOptions, RE2::ANCHOR_BOTH);
+
+  CHECK_EQ(s.Compile(), true);
+
+  vector<int> v;
+  CHECK_EQ(s.Match("", &v), false);
+  CHECK_EQ(v.size(), 0);
+
+  v.clear();
+  CHECK_EQ(s.Match("foobar", &v), false);
+  CHECK_EQ(v.size(), 0);
 }
 
 }  // namespace re2
-