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// RUN: %clang_cc1 -x c -fsyntax-only -verify -Wint-in-bool-context %s
// RUN: %clang_cc1 -x c -fsyntax-only -verify -Wall %s
// RUN: %clang_cc1 -x c++ -fsyntax-only -verify -Wint-in-bool-context %s
// RUN: %clang_cc1 -x c++ -fsyntax-only -verify -Wall %s
#define ONE 1
#define TWO 2
#define SHIFT(l, r) l << r
#define MM a << a
#define AF 1 << 7
#ifdef __cplusplus
typedef bool boolean;
#else
typedef _Bool boolean;
#endif
enum num {
zero,
one,
two,
};
int test(int a, unsigned b, enum num n) {
boolean r;
r = a << a; // expected-warning {{converting the result of '<<' to a boolean; did you mean '(a << a) != 0'?}}
r = MM; // expected-warning {{converting the result of '<<' to a boolean; did you mean '(a << a) != 0'?}}
r = (1 << 7); // expected-warning {{converting the result of '<<' to a boolean always evaluates to true}}
r = 2UL << 2; // expected-warning {{converting the result of '<<' to a boolean always evaluates to true}}
r = 0 << a; // expected-warning {{converting the result of '<<' to a boolean always evaluates to false}}
r = 0 << 2; // expected-warning {{converting the result of '<<' to a boolean always evaluates to false}}
r = 1 << 0; // expected-warning {{converting the result of '<<' to a boolean always evaluates to true}}
r = 1 << 2; // expected-warning {{converting the result of '<<' to a boolean always evaluates to true}}
r = 1ULL << 2; // expected-warning {{converting the result of '<<' to a boolean always evaluates to true}}
r = 2 << b; // expected-warning {{converting the result of '<<' to a boolean; did you mean '(2 << b) != 0'?}}
r = (unsigned)(2 << b);
r = b << 7;
r = (1 << a); // expected-warning {{converting the result of '<<' to a boolean; did you mean '(1 << a) != 0'?}}
r = TWO << a; // expected-warning {{converting the result of '<<' to a boolean; did you mean '(2 << a) != 0'?}}
r = a << 7; // expected-warning {{converting the result of '<<' to a boolean; did you mean '(a << 7) != 0'?}}
r = ONE << a; // expected-warning {{converting the result of '<<' to a boolean; did you mean '(1 << a) != 0'?}}
if (TWO << a) // expected-warning {{converting the result of '<<' to a boolean; did you mean '(2 << a) != 0'?}}
return a;
for (a = 0; 1 << a; a++) // expected-warning {{converting the result of '<<' to a boolean; did you mean '(1 << a) != 0'?}}
;
if (a << TWO) // expected-warning {{converting the result of '<<' to a boolean; did you mean '(a << 2) != 0'?}}
return a;
if (n || two)
// expected-warning@-1 {{converting the enum constant to a boolean}}
return a;
if (n == one || two)
// expected-warning@-1 {{converting the enum constant to a boolean}}
return a;
if (r && two)
// expected-warning@-1 {{converting the enum constant to a boolean}}
return a;
if (two && r)
// expected-warning@-1 {{converting the enum constant to a boolean}}
return a;
if (n == one && two)
// expected-warning@-1 {{converting the enum constant to a boolean}}
return a;
// Don't warn in macros.
return SHIFT(1, a);
}
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