1 // RUN: %clang_cc1 -fsyntax-only -Wstring-conversion -verify %s
2
3 // Warn on cases where a string literal is converted into a bool.
4 // An exception is made for this in logical and operators.
5 void assert(bool condition);
test0()6 void 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