25 lines · cpp
1// RUN: %clang_cc1 -fsyntax-only -Wstring-conversion -verify %s2 3// Warn on cases where a string literal is converted into a bool.4// An exception is made for this in logical and operators.5void assert(bool condition);6void test0() {7 bool b0 = "hi"; // expected-warning{{implicit conversion turns string literal into bool: 'const char[3]' to 'bool'}}8 b0 = ""; // expected-warning{{implicit conversion turns string literal into bool: 'const char[1]' to 'bool'}}9 b0 = 0 || ""; // expected-warning{{implicit conversion turns string literal into bool: 'const char[1]' to 'bool'}}10 b0 = "" || 0; // expected-warning{{implicit conversion turns string literal into bool: 'const char[1]' to 'bool'}}11 b0 = 0 && "";12 b0 = "" && 0;13 assert("error"); // expected-warning{{implicit conversion turns string literal into bool: 'const char[6]' to 'bool'}}14 assert(0 || "error"); // expected-warning{{implicit conversion turns string literal into bool: 'const char[6]' to 'bool'}}15 assert("error" || 0); // expected-warning{{implicit conversion turns string literal into bool: 'const char[6]' to 'bool'}}16 assert(0 && "error");17 assert("error" && 0);18 19 while("hi") {} // expected-warning{{implicit conversion turns string literal into bool: 'const char[3]' to 'bool'}}20 do {} while("hi"); // expected-warning{{implicit conversion turns string literal into bool: 'const char[3]' to 'bool'}}21 for (;"hi";); // expected-warning{{implicit conversion turns string literal into bool: 'const char[3]' to 'bool'}}22 if("hi") {} // expected-warning{{implicit conversion turns string literal into bool: 'const char[3]' to 'bool'}}23}24 25