1*67e74705SXin Li // RUN: %clang_cc1 -fsyntax-only -verify %s 2*67e74705SXin Li 3*67e74705SXin Li struct AB{const char *a; const char*b;}; 4*67e74705SXin Li foo(const struct AB * ab)5*67e74705SXin Liconst char *foo(const struct AB *ab) { 6*67e74705SXin Li return ab->a + 'b'; // expected-warning {{adding 'char' to a string pointer does not append to the string}} expected-note {{use array indexing to silence this warning}} 7*67e74705SXin Li } 8*67e74705SXin Li f(const char * s)9*67e74705SXin Livoid f(const char *s) { 10*67e74705SXin Li char *str = 0; 11*67e74705SXin Li 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}} 12*67e74705SXin Li 13*67e74705SXin Li 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}} 14*67e74705SXin Li 15*67e74705SXin Li 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}} 16*67e74705SXin Li 17*67e74705SXin Li char strArr[] = "foo"; 18*67e74705SXin Li str = strArr + '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*67e74705SXin Li char *strArr2[] = {"ac","dc"}; 20*67e74705SXin Li str = strArr2[0] + '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*67e74705SXin Li 22*67e74705SXin Li 23*67e74705SXin Li struct AB ab; 24*67e74705SXin Li constStr = foo(&ab) + 'c'; // expected-warning {{adding 'char' to a string pointer does not append to the string}} expected-note {{use array indexing to silence this warning}} 25*67e74705SXin Li 26*67e74705SXin Li // no-warning 27*67e74705SXin Li char c = 'c'; 28*67e74705SXin Li str = str + c; 29*67e74705SXin Li str = c + str; 30*67e74705SXin Li } 31