You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
96 lines
3.6 KiB
96 lines
3.6 KiB
// RUN: %clang_cc1 -triple x86_64-apple-darwin -fsyntax-only -verify %s
|
|
// rdar://18716393
|
|
|
|
extern int a[] __attribute__((weak));
|
|
int b[] = {8,13,21};
|
|
struct {
|
|
int x[10];
|
|
} c;
|
|
const char str[] = "text";
|
|
|
|
void ignore() {
|
|
if (!a) {}
|
|
}
|
|
void test() {
|
|
if (!b) {} // expected-warning {{address of array 'b' will always evaluate to 'true'}}
|
|
if (b == 0) {} // expected-warning {{comparison of array 'b' equal to a null pointer is always false}}
|
|
if (!c.x) {} // expected-warning {{address of array 'c.x' will always evaluate to 'true'}}
|
|
if (c.x == 0) {} // expected-warning {{comparison of array 'c.x' equal to a null pointer is always false}}
|
|
if (!str) {} // expected-warning {{address of array 'str' will always evaluate to 'true'}}
|
|
if (0 == str) {} // expected-warning {{comparison of array 'str' equal to a null pointer is always false}}
|
|
}
|
|
|
|
int array[2];
|
|
int test1()
|
|
{
|
|
if (!array) { // expected-warning {{address of array 'array' will always evaluate to 'true'}}
|
|
return array[0];
|
|
} else if (array != 0) { // expected-warning {{comparison of array 'array' not equal to a null pointer is always true}}
|
|
return array[1];
|
|
}
|
|
if (array == 0) // expected-warning {{comparison of array 'array' equal to a null pointer is always false}}
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
#define NULL (void*)0
|
|
|
|
int test2(int* pointer, char ch, void * pv) {
|
|
if (!&pointer) { // expected-warning {{address of 'pointer' will always evaluate to 'true'}}
|
|
return 0;
|
|
}
|
|
|
|
if (&pointer) { // expected-warning {{address of 'pointer' will always evaluate to 'true'}}
|
|
return 0;
|
|
}
|
|
|
|
if (&pointer == NULL) {} // expected-warning {{comparison of address of 'pointer' equal to a null pointer is always false}}
|
|
|
|
if (&pointer != NULL) {} // expected-warning {{comparison of address of 'pointer' not equal to a null pointer is always true}}
|
|
|
|
return 1;
|
|
}
|
|
|
|
void test3() {
|
|
if (array) { } // expected-warning {{address of array 'array' will always evaluate to 'true'}}
|
|
if (array != 0) {} // expected-warning {{comparison of array 'array' not equal to a null pointer is always true}}
|
|
if (!array) { } // expected-warning {{address of array 'array' will always evaluate to 'true'}}
|
|
if (array == 0) {} // expected-warning {{comparison of array 'array' equal to a null pointer is always false}}
|
|
|
|
if (array[0] &&
|
|
array) {} // expected-warning {{address of array 'array' will always evaluate to 'true'}}
|
|
|
|
if (array[0] ||
|
|
array) {} // expected-warning {{address of array 'array' will always evaluate to 'true'}}
|
|
|
|
if (array[0] &&
|
|
!array) {} // expected-warning {{address of array 'array' will always evaluate to 'true'}}
|
|
if (array[0] ||
|
|
!array) {} // expected-warning {{address of array 'array' will always evaluate to 'true'}}
|
|
|
|
if (array && // expected-warning {{address of array 'array' will always evaluate to 'true'}}
|
|
array[0]) {}
|
|
if (!array || // expected-warning {{address of array 'array' will always evaluate to 'true'}}
|
|
array[0]) {}
|
|
|
|
if (array || // expected-warning {{address of array 'array' will always evaluate to 'true'}}
|
|
(!array && array[0])) {} // expected-warning {{address of array 'array' will always evaluate to 'true'}}
|
|
}
|
|
|
|
// rdar://19256338
|
|
#define SAVE_READ(PTR) if( (PTR) && (&result) ) *result=*PTR;
|
|
void _HTTPClientErrorHandler(int me)
|
|
{
|
|
int *result;
|
|
SAVE_READ(&me);
|
|
}
|
|
|
|
void test_conditional_operator() {
|
|
int x;
|
|
x = b ? 1 : 0; // expected-warning {{address of array}}
|
|
x = c.x ? 1 : 0; // expected-warning {{address of array}}
|
|
x = str ? 1 : 0; // expected-warning {{address of array}}
|
|
x = array ? 1 : 0; // expected-warning {{address of array}}
|
|
x = &x ? 1 : 0; // expected-warning {{address of 'x'}}
|
|
}
|