hanchenye-llvm-project/clang/test/Sema/compare.c

39 lines
1021 B
C

// RUN: clang-cc -fsyntax-only -pedantic -verify %s
#include <stddef.h>
int test(char *C) { // nothing here should warn.
return C != ((void*)0);
return C != (void*)0;
return C != 0;
}
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 integer}}
return a > (void *)0; // expected-warning {{comparison of distinct pointer types}}
}
int function_pointers(int (*a)(int), int (*b)(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 == (void *) 0;
return a == (void *) 1; // expected-warning {{comparison of distinct pointer types}}
}
int void_pointers(void *foo)
{
return foo == NULL;
}