| // RUN: clang-cc -fsyntax-only -pedantic -verify -Wsign-compare %s |
| |
| int test(char *C) { // nothing here should warn. |
| return C != ((void*)0); |
| return C != (void*)0; |
| return C != 0; |
| return C != 1; // expected-warning {{comparison between pointer and integer ('char *' and 'int')}} |
| } |
| |
| int ints(long a, unsigned long b) { |
| enum EnumA {A}; |
| enum EnumB {B}; |
| enum EnumC {C = 0x10000}; |
| return |
| // (a,b) |
| (a == (unsigned long) b) + // expected-warning {{comparison of integers of different signs}} |
| (a == (unsigned int) b) + |
| (a == (unsigned short) b) + |
| (a == (unsigned char) b) + |
| ((long) a == b) + // expected-warning {{comparison of integers of different signs}} |
| ((int) a == b) + // expected-warning {{comparison of integers of different signs}} |
| ((short) a == b) + // expected-warning {{comparison of integers of different signs}} |
| ((signed char) a == b) + // expected-warning {{comparison of integers of different signs}} |
| ((long) a == (unsigned long) b) + // expected-warning {{comparison of integers of different signs}} |
| ((int) a == (unsigned int) b) + // expected-warning {{comparison of integers of different signs}} |
| ((short) a == (unsigned short) b) + // expected-warning {{comparison of integers of different signs}} |
| ((signed char) a == (unsigned char) b) + // expected-warning {{comparison of integers of different signs}} |
| (a < (unsigned long) b) + // expected-warning {{comparison of integers of different signs}} |
| (a < (unsigned int) b) + |
| (a < (unsigned short) b) + |
| (a < (unsigned char) b) + |
| ((long) a < b) + // expected-warning {{comparison of integers of different signs}} |
| ((int) a < b) + // expected-warning {{comparison of integers of different signs}} |
| ((short) a < b) + // expected-warning {{comparison of integers of different signs}} |
| ((signed char) a < b) + // expected-warning {{comparison of integers of different signs}} |
| ((long) a < (unsigned long) b) + // expected-warning {{comparison of integers of different signs}} |
| ((int) a < (unsigned int) b) + // expected-warning {{comparison of integers of different signs}} |
| ((short) a < (unsigned short) b) + // expected-warning {{comparison of integers of different signs}} |
| ((signed char) a < (unsigned char) b) + // expected-warning {{comparison of integers of different signs}} |
| |
| // (A,b) |
| (A == (unsigned long) b) + |
| (A == (unsigned int) b) + |
| (A == (unsigned short) b) + |
| (A == (unsigned char) b) + |
| ((long) A == b) + |
| ((int) A == b) + |
| ((short) A == b) + |
| ((signed char) A == b) + |
| ((long) A == (unsigned long) b) + |
| ((int) A == (unsigned int) b) + |
| ((short) A == (unsigned short) b) + |
| ((signed char) A == (unsigned char) b) + |
| (A < (unsigned long) b) + |
| (A < (unsigned int) b) + |
| (A < (unsigned short) b) + |
| (A < (unsigned char) b) + |
| ((long) A < b) + |
| ((int) A < b) + |
| ((short) A < b) + |
| ((signed char) A < b) + |
| ((long) A < (unsigned long) b) + |
| ((int) A < (unsigned int) b) + |
| ((short) A < (unsigned short) b) + |
| ((signed char) A < (unsigned char) b) + |
| |
| // (a,B) |
| (a == (unsigned long) B) + |
| (a == (unsigned int) B) + |
| (a == (unsigned short) B) + |
| (a == (unsigned char) B) + |
| ((long) a == B) + |
| ((int) a == B) + |
| ((short) a == B) + |
| ((signed char) a == B) + |
| ((long) a == (unsigned long) B) + |
| ((int) a == (unsigned int) B) + |
| ((short) a == (unsigned short) B) + |
| ((signed char) a == (unsigned char) B) + |
| (a < (unsigned long) B) + // expected-warning {{comparison of integers of different signs}} |
| (a < (unsigned int) B) + |
| (a < (unsigned short) B) + |
| (a < (unsigned char) B) + |
| ((long) a < B) + |
| ((int) a < B) + |
| ((short) a < B) + |
| ((signed char) a < B) + |
| ((long) a < (unsigned long) B) + // expected-warning {{comparison of integers of different signs}} |
| ((int) a < (unsigned int) B) + // expected-warning {{comparison of integers of different signs}} |
| ((short) a < (unsigned short) B) + // expected-warning {{comparison of integers of different signs}} |
| ((signed char) a < (unsigned char) B) + // expected-warning {{comparison of integers of different signs}} |
| |
| // (C,b) |
| (C == (unsigned long) b) + |
| (C == (unsigned int) b) + |
| (C == (unsigned short) b) + |
| (C == (unsigned char) b) + |
| ((long) C == b) + |
| ((int) C == b) + |
| ((short) C == b) + |
| ((signed char) C == b) + |
| ((long) C == (unsigned long) b) + |
| ((int) C == (unsigned int) b) + |
| ((short) C == (unsigned short) b) + |
| ((signed char) C == (unsigned char) b) + |
| (C < (unsigned long) b) + |
| (C < (unsigned int) b) + |
| (C < (unsigned short) b) + |
| (C < (unsigned char) b) + |
| ((long) C < b) + |
| ((int) C < b) + |
| ((short) C < b) + |
| ((signed char) C < b) + |
| ((long) C < (unsigned long) b) + |
| ((int) C < (unsigned int) b) + |
| ((short) C < (unsigned short) b) + |
| ((signed char) C < (unsigned char) b) + |
| |
| // (a,C) |
| (a == (unsigned long) C) + |
| (a == (unsigned int) C) + |
| (a == (unsigned short) C) + |
| (a == (unsigned char) C) + |
| ((long) a == C) + |
| ((int) a == C) + |
| ((short) a == C) + |
| ((signed char) a == C) + |
| ((long) a == (unsigned long) C) + |
| ((int) a == (unsigned int) C) + |
| ((short) a == (unsigned short) C) + |
| ((signed char) a == (unsigned char) C) + |
| (a < (unsigned long) C) + // expected-warning {{comparison of integers of different signs}} |
| (a < (unsigned int) C) + |
| (a < (unsigned short) C) + |
| (a < (unsigned char) C) + |
| ((long) a < C) + |
| ((int) a < C) + |
| ((short) a < C) + |
| ((signed char) a < C) + |
| ((long) a < (unsigned long) C) + // expected-warning {{comparison of integers of different signs}} |
| ((int) a < (unsigned int) C) + // expected-warning {{comparison of integers of different signs}} |
| ((short) a < (unsigned short) C) + // expected-warning {{comparison of integers of different signs}} |
| ((signed char) a < (unsigned char) C) + // expected-warning {{comparison of integers of different signs}} |
| |
| // (0x80000,b) |
| (0x80000 == (unsigned long) b) + |
| (0x80000 == (unsigned int) b) + |
| (0x80000 == (unsigned short) b) + |
| (0x80000 == (unsigned char) b) + |
| ((long) 0x80000 == b) + |
| ((int) 0x80000 == b) + |
| ((short) 0x80000 == b) + |
| ((signed char) 0x80000 == b) + |
| ((long) 0x80000 == (unsigned long) b) + |
| ((int) 0x80000 == (unsigned int) b) + |
| ((short) 0x80000 == (unsigned short) b) + |
| ((signed char) 0x80000 == (unsigned char) b) + |
| (0x80000 < (unsigned long) b) + |
| (0x80000 < (unsigned int) b) + |
| (0x80000 < (unsigned short) b) + |
| (0x80000 < (unsigned char) b) + |
| ((long) 0x80000 < b) + |
| ((int) 0x80000 < b) + |
| ((short) 0x80000 < b) + |
| ((signed char) 0x80000 < b) + |
| ((long) 0x80000 < (unsigned long) b) + |
| ((int) 0x80000 < (unsigned int) b) + |
| ((short) 0x80000 < (unsigned short) b) + |
| ((signed char) 0x80000 < (unsigned char) b) + |
| |
| // (a,0x80000) |
| (a == (unsigned long) 0x80000) + |
| (a == (unsigned int) 0x80000) + |
| (a == (unsigned short) 0x80000) + |
| (a == (unsigned char) 0x80000) + |
| ((long) a == 0x80000) + |
| ((int) a == 0x80000) + |
| ((short) a == 0x80000) + |
| ((signed char) a == 0x80000) + |
| ((long) a == (unsigned long) 0x80000) + |
| ((int) a == (unsigned int) 0x80000) + |
| ((short) a == (unsigned short) 0x80000) + |
| ((signed char) a == (unsigned char) 0x80000) + |
| (a < (unsigned long) 0x80000) + // expected-warning {{comparison of integers of different signs}} |
| (a < (unsigned int) 0x80000) + |
| (a < (unsigned short) 0x80000) + |
| (a < (unsigned char) 0x80000) + |
| ((long) a < 0x80000) + |
| ((int) a < 0x80000) + |
| ((short) a < 0x80000) + |
| ((signed char) a < 0x80000) + |
| ((long) a < (unsigned long) 0x80000) + // expected-warning {{comparison of integers of different signs}} |
| ((int) a < (unsigned int) 0x80000) + // expected-warning {{comparison of integers of different signs}} |
| ((short) a < (unsigned short) 0x80000) + // expected-warning {{comparison of integers of different signs}} |
| ((signed char) a < (unsigned char) 0x80000) + // expected-warning {{comparison of integers of different signs}} |
| |
| 10 |
| ; |
| } |
| |
| int equal(char *a, const char *b) { |
| return a == b; |
| } |
| |
| int arrays(char (*a)[5], char(*b)[10], char(*c)[5]) { |
| int d = (a == c); |
| return a == b; // expected-warning {{comparison of distinct pointer types}} |
| } |
| |
| int pointers(int *a) { |
| return a > 0; // expected-warning {{ordered comparison between pointer and zero ('int *' and 'int') is an extension}} |
| return a > 42; // expected-warning {{ordered comparison between pointer and integer ('int *' and 'int')}} |
| return a > (void *)0; // expected-warning {{comparison of distinct pointer types}} |
| } |
| |
| int function_pointers(int (*a)(int), int (*b)(int), void (*c)(int)) { |
| return a > b; // expected-warning {{ordered comparison of function pointers}} |
| return function_pointers > function_pointers; // expected-warning {{ordered comparison of function pointers}} |
| return a > c; // expected-warning {{comparison of distinct pointer types}} |
| return a == (void *) 0; |
| return a == (void *) 1; // expected-warning {{equality comparison between function pointer and void pointer}} |
| } |
| |
| int void_pointers(void* foo) { |
| return foo == (void*) 0; |
| return foo == (void*) 1; |
| } |