// RUN: %clang_cc1 -fsyntax-only -Wparentheses -verify %s struct A { int foo(); friend A operator+(const A&, const A&); operator bool(); }; void test() { int x, *p; A a, b; // With scalars. if (x = 7) {} // expected-warning {{using the result of an assignment as a condition without parentheses}} \ // expected-note{{use '==' to turn this assignment into an equality comparison}} \ // expected-note{{place parentheses around the assignment to silence this warning}} if ((x = 7)) {} do { } while (x = 7); // expected-warning {{using the result of an assignment as a condition without parentheses}} \ // expected-note{{use '==' to turn this assignment into an equality comparison}} \ // expected-note{{place parentheses around the assignment to silence this warning}} do { } while ((x = 7)); while (x = 7) {} // expected-warning {{using the result of an assignment as a condition without parentheses}} \ // expected-note{{use '==' to turn this assignment into an equality comparison}} \ // expected-note{{place parentheses around the assignment to silence this warning}} while ((x = 7)) {} for (; x = 7; ) {} // expected-warning {{using the result of an assignment as a condition without parentheses}} \ // expected-note{{use '==' to turn this assignment into an equality comparison}} \ // expected-note{{place parentheses around the assignment to silence this warning}} for (; (x = 7); ) {} if (p = p) {} // expected-warning {{using the result of an assignment as a condition without parentheses}} \ // expected-note{{use '==' to turn this assignment into an equality comparison}} \ // expected-note{{place parentheses around the assignment to silence this warning}} if ((p = p)) {} do { } while (p = p); // expected-warning {{using the result of an assignment as a condition without parentheses}} \ // expected-note{{use '==' to turn this assignment into an equality comparison}} \ // expected-note{{place parentheses around the assignment to silence this warning}} do { } while ((p = p)); while (p = p) {} // expected-warning {{using the result of an assignment as a condition without parentheses}} \ // expected-note{{use '==' to turn this assignment into an equality comparison}} \ // expected-note{{place parentheses around the assignment to silence this warning}} while ((p = p)) {} for (; p = p; ) {} // expected-warning {{using the result of an assignment as a condition without parentheses}} \ // expected-note{{use '==' to turn this assignment into an equality comparison}} \ // expected-note{{place parentheses around the assignment to silence this warning}} for (; (p = p); ) {} // Initializing variables (shouldn't warn). if (int y = x) {} while (int y = x) {} if (A y = a) {} while (A y = a) {} // With temporaries. if (x = (b+b).foo()) {} // expected-warning {{using the result of an assignment as a condition without parentheses}} \ // expected-note{{use '==' to turn this assignment into an equality comparison}} \ // expected-note{{place parentheses around the assignment to silence this warning}} if ((x = (b+b).foo())) {} do { } while (x = (b+b).foo()); // expected-warning {{using the result of an assignment as a condition without parentheses}} \ // expected-note{{use '==' to turn this assignment into an equality comparison}} \ // expected-note{{place parentheses around the assignment to silence this warning}} do { } while ((x = (b+b).foo())); while (x = (b+b).foo()) {} // expected-warning {{using the result of an assignment as a condition without parentheses}} \ // expected-note{{use '==' to turn this assignment into an equality comparison}} \ // expected-note{{place parentheses around the assignment to silence this warning}} while ((x = (b+b).foo())) {} for (; x = (b+b).foo(); ) {} // expected-warning {{using the result of an assignment as a condition without parentheses}} \ // expected-note{{use '==' to turn this assignment into an equality comparison}} \ // expected-note{{place parentheses around the assignment to silence this warning}} for (; (x = (b+b).foo()); ) {} // With a user-defined operator. if (a = b + b) {} // expected-warning {{using the result of an assignment as a condition without parentheses}} \ // expected-note{{use '==' to turn this assignment into an equality comparison}} \ // expected-note{{place parentheses around the assignment to silence this warning}} if ((a = b + b)) {} do { } while (a = b + b); // expected-warning {{using the result of an assignment as a condition without parentheses}} \ // expected-note{{use '==' to turn this assignment into an equality comparison}} \ // expected-note{{place parentheses around the assignment to silence this warning}} do { } while ((a = b + b)); while (a = b + b) {} // expected-warning {{using the result of an assignment as a condition without parentheses}} \ // expected-note{{use '==' to turn this assignment into an equality comparison}} \ // expected-note{{place parentheses around the assignment to silence this warning}} while ((a = b + b)) {} for (; a = b + b; ) {} // expected-warning {{using the result of an assignment as a condition without parentheses}} \ // expected-note{{use '==' to turn this assignment into an equality comparison}} \ // expected-note{{place parentheses around the assignment to silence this warning}} for (; (a = b + b); ) {} }