A few more tests for posix extended alternation

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@109107 91177308-0d34-0410-b5e6-96231b3b80d8

include/regex

@@ -1596,10 +1596,10 @@ void
 __alternate<_CharT>::__exec_split(bool __second, __state& __s) const
 {
     __s.__do_ = __state::__accept_but_not_consume;
-    if (!__second)
-        __s.__node_ = this->first();
-    else
+    if (__second)
         __s.__node_ = this->second();
+    else
+        __s.__node_ = this->first();
 }
 
 // __begin_marked_subexpression

test/re/re.alg/re.alg.search/extended.pass.cpp

@@ -323,7 +323,7 @@ int main()
         assert(!m.suffix().matched);
         assert(m.suffix().first == m[0].second);
         assert(m.suffix().second == m[0].second);
-        assert(m.length(0) == sizeof(s)-1);
+        assert(m.length(0) == std::char_traits<char>::length(s));
         assert(m.position(0) == 0);
         assert(m.str(0) == s);
     }
@@ -338,7 +338,7 @@ int main()
         assert(!m.suffix().matched);
         assert(m.suffix().first == m[0].second);
         assert(m.suffix().second == m[0].second);
-        assert(m.length(0) == sizeof(s)-1);
+        assert(m.length(0) == std::char_traits<char>::length(s));
         assert(m.position(0) == 0);
         assert(m.str(0) == s);
     }
@@ -353,7 +353,7 @@ int main()
         assert(!m.suffix().matched);
         assert(m.suffix().first == m[0].second);
         assert(m.suffix().second == m[0].second);
-        assert(m.length(0) == sizeof(s)-1);
+        assert(m.length(0) == std::char_traits<char>::length(s));
         assert(m.position(0) == 0);
         assert(m.str(0) == s);
     }
@@ -386,7 +386,7 @@ int main()
         assert(!m.suffix().matched);
         assert(m.suffix().first == m[0].second);
         assert(m.suffix().second == m[0].second);
-        assert(m.length(0) == sizeof(s)-1);
+        assert(m.length(0) == std::char_traits<char>::length(s));
         assert(m.position(0) == 0);
         assert(m.str(0) == s);
     }
@@ -401,7 +401,7 @@ int main()
         assert(!m.suffix().matched);
         assert(m.suffix().first == m[0].second);
         assert(m.suffix().second == m[0].second);
-        assert(m.length(0) == sizeof(s)-1);
+        assert(m.length(0) == std::char_traits<char>::length(s));
         assert(m.position(0) == 0);
         assert(m.str(0) == s);
     }
@@ -416,7 +416,7 @@ int main()
         assert(!m.suffix().matched);
         assert(m.suffix().first == m[0].second);
         assert(m.suffix().second == m[0].second);
-        assert(m.length(0) == sizeof(s)-1);
+        assert(m.length(0) == std::char_traits<char>::length(s));
         assert(m.position(0) == 0);
         assert(m.str(0) == s);
     }
@@ -438,8 +438,43 @@ int main()
         assert(!m.suffix().matched);
         assert(m.suffix().first == m[0].second);
         assert(m.suffix().second == m[0].second);
-        assert(m.length(0) == sizeof(s)-1);
+        assert(m.length(0) == std::char_traits<char>::length(s));
         assert(m.position(0) == 0);
         assert(m.str(0) == s);
     }
+    {
+        std::cmatch m;
+        const char s[] = "tournamenttotour";
+        assert(std::regex_search(s, m, std::regex("(tour|to|tournament)+",
+               std::regex_constants::extended | std::regex_constants::nosubs)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "ttotour";
+        assert(std::regex_search(s, m, std::regex("(tour|to|t)+",
+                                              std::regex_constants::extended)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 4);
+        assert(m.position(1) == 3);
+        assert(m.str(1) == "tour");
+    }
 }