1 // RUN: %clang_cc1 -fsyntax-only -verify -Wno-bool-conversion -Wno-string-compare -Wno-tautological-compare -Waddress %s
2 // RUN: %clang_cc1 -fsyntax-only -verify %s
3 
4 void foo();
5 int arr[5];
6 int global;
7 const char* str = "";
8 
9 void test() {
10   if (foo) {}            // expected-warning{{always evaluate to 'true'}} \
11                          // expected-note{{silence}}
12   if (arr) {}            // expected-warning{{always evaluate to 'true'}}
13   if (&global) {}        // expected-warning{{always evaluate to 'true'}}
14   if (foo == 0) {}       // expected-warning{{always false}} \
15                          // expected-note{{silence}}
16   if (arr == 0) {}       // expected-warning{{always false}}
17   if (&global == 0) {}   // expected-warning{{always false}}
18 
19   if (str == "foo") {}   // expected-warning{{unspecified}}
20 }
21