33 lines · cpp
1// RUN: %clang_cc1 -fsyntax-only -std=c++11 -verify %s2 3class A {4public:5 A(): str() { }6 A(const char *p) { }7 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}}8 A& operator+(const char *p) { return *this; }9 A& operator+(char ch) { return *this; }10 char * str;11};12 13void f(const char *s) {14 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}}15 a = a + s + 'b'; // no-warning16 17 char *str = 0;18 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}}19 20 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}}21 22 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}}23 24 wchar_t *wstr;25 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}}26 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}}27 28 // no-warning29 char c = 'c';30 str = str + c;31 str = c + str;32}33