llvm-project/clang/test/Sema/tautological-objc-bool-compare.m
Aaron Ballman 22db4824b9 Use functions with prototypes when appropriate; NFC
A significant number of our tests in C accidentally use functions
without prototypes. This patch converts the function signatures to have
a prototype for the situations where the test is not specific to K&R C
declarations. e.g.,

  void func();

becomes

  void func(void);

This is the third batch of tests being updated (there are a significant
number of other tests left to be updated).
2022-02-07 09:25:01 -05:00

25 lines
1.3 KiB
Objective-C

// RUN: %clang_cc1 %s -verify
typedef signed char BOOL;
#define YES __objc_yes
#define NO __objc_no
BOOL B;
void test(void) {
int r;
r = B > 0;
r = B > 1; // expected-warning {{result of comparison of constant 1 with expression of type 'BOOL' is always false, as the only well defined values for 'BOOL' are YES and NO}}
r = B < 1;
r = B < 0; // expected-warning {{result of comparison of constant 0 with expression of type 'BOOL' is always false, as the only well defined values for 'BOOL' are YES and NO}}
r = B >= 0; // expected-warning {{result of comparison of constant 0 with expression of type 'BOOL' is always true, as the only well defined values for 'BOOL' are YES and NO}}
r = B <= 0;
r = B > YES; // expected-warning {{result of comparison of constant YES with expression of type 'BOOL' is always false, as the only well defined values for 'BOOL' are YES and NO}}
r = B > NO;
r = B < NO; // expected-warning {{result of comparison of constant NO with expression of type 'BOOL' is always false, as the only well defined values for 'BOOL' are YES and NO}}
r = B < YES;
r = B >= NO; // expected-warning {{result of comparison of constant NO with expression of type 'BOOL' is always true, as the only well defined values for 'BOOL' are YES and NO}}
r = B <= NO;
}