+// RUN: %clang_cc1 -fsyntax-only -std=c++11 -verify %s

+

+class A {

+public:

+ A(): str() { }

+ A(const char *p) { }

+ A(char *p) : str(p + 'a') { } // expected-warning {{adding 'char' to a string pointer does not append to the string}} expected-note {{use array indexing to silence this warning}}

+ A& operator+(const char *p) { return *this; }

+ A& operator+(char ch) { return *this; }

+ char * str;

+};

+

+void f(const char *s) {

+ A a = s + 'a'; // // expected-warning {{adding 'char' to a string pointer does not append to the string}} expected-note {{use array indexing to silence this warning}}

+ a = a + s + 'b'; // no-warning

+

+ char *str = 0;

+ char *str2 = str + 'c'; // expected-warning {{adding 'char' to a string pointer does not append to the string}} expected-note {{use array indexing to silence this warning}}

+

+ const char *constStr = s + 'c'; // expected-warning {{adding 'char' to a string pointer does not append to the string}} expected-note {{use array indexing to silence this warning}}

+

+ str = 'c' + str;// expected-warning {{adding 'char' to a string pointer does not append to the string}} expected-note {{use array indexing to silence this warning}}

+

+ wchar_t *wstr;

+ wstr = wstr + L'c'; // expected-warning {{adding 'wchar_t' to a string pointer does not append to the string}} expected-note {{use array indexing to silence this warning}}

+ str2 = str + u'a'; // expected-warning {{adding 'char16_t' to a string pointer does not append to the string}} expected-note {{use array indexing to silence this warning}}

+

+ // no-warning

+ char c = 'c';

+ str = str + c;

+ str = c + str;

+}