96 lines · cpp
1// RUN: %clang_cc1 -triple x86_64-unknown-unknown -fsyntax-only -fblocks -Wnull-arithmetic -verify -Wno-string-plus-int -Wno-tautological-pointer-compare %s2#include <stddef.h>3 4void f() {5 int a;6 bool b;7 void (^c)();8 class X;9 void (X::*d) ();10 extern void e();11 int f[2];12 const void *v;13 14 a = 0 ? NULL + a : a + NULL; // expected-warning 2{{use of NULL in arithmetic operation}}15 a = 0 ? NULL - a : a - NULL; // expected-warning 2{{use of NULL in arithmetic operation}}16 a = 0 ? NULL / a : a / NULL; // expected-warning 2{{use of NULL in arithmetic operation}} \17 // expected-warning {{division by zero is undefined}}18 a = 0 ? NULL * a : a * NULL; // expected-warning 2{{use of NULL in arithmetic operation}}19 a = 0 ? NULL >> a : a >> NULL; // expected-warning 2{{use of NULL in arithmetic operation}}20 a = 0 ? NULL << a : a << NULL; // expected-warning 2{{use of NULL in arithmetic operation}}21 a = 0 ? NULL % a : a % NULL; // expected-warning 2{{use of NULL in arithmetic operation}} \22 expected-warning {{remainder by zero is undefined}}23 a = 0 ? NULL & a : a & NULL; // expected-warning 2{{use of NULL in arithmetic operation}}24 a = 0 ? NULL | a : a | NULL; // expected-warning 2{{use of NULL in arithmetic operation}}25 a = 0 ? NULL ^ a : a ^ NULL; // expected-warning 2{{use of NULL in arithmetic operation}}26 27 // Check for warnings or errors when doing arithmetic on pointers and other28 // types.29 v = 0 ? NULL + &a : &a + NULL; // expected-warning 2{{use of NULL in arithmetic operation}}30 v = 0 ? NULL + c : c + NULL; // \31 expected-error {{invalid operands to binary expression ('long' and 'void (^)()')}} \32 expected-error {{invalid operands to binary expression ('void (^)()' and 'long')}}33 v = 0 ? NULL + d : d + NULL; // \34 expected-error {{invalid operands to binary expression ('long' and 'void (X::*)()')}} \35 expected-error {{invalid operands to binary expression ('void (X::*)()' and 'long')}}36 v = 0 ? NULL + e : e + NULL; // expected-error 2{{arithmetic on a pointer to the function type 'void ()'}}37 v = 0 ? NULL + f : f + NULL; // expected-warning 2{{use of NULL in arithmetic operation}}38 v = 0 ? NULL + "f" : "f" + NULL; // expected-warning 2{{use of NULL in arithmetic operation}}39 40 // Using two NULLs should only give one error instead of two.41 a = NULL + NULL; // expected-warning{{use of NULL in arithmetic operation}}42 a = NULL - NULL; // expected-warning{{use of NULL in arithmetic operation}}43 a = NULL / NULL; // expected-warning{{use of NULL in arithmetic operation}} \44 // expected-warning{{division by zero is undefined}}45 a = NULL * NULL; // expected-warning{{use of NULL in arithmetic operation}}46 a = NULL >> NULL; // expected-warning{{use of NULL in arithmetic operation}}47 a = NULL << NULL; // expected-warning{{use of NULL in arithmetic operation}}48 a = NULL % NULL; // expected-warning{{use of NULL in arithmetic operation}} \49 // expected-warning{{remainder by zero is undefined}}50 a = NULL & NULL; // expected-warning{{use of NULL in arithmetic operation}}51 a = NULL | NULL; // expected-warning{{use of NULL in arithmetic operation}}52 a = NULL ^ NULL; // expected-warning{{use of NULL in arithmetic operation}}53 54 a += NULL; // expected-warning{{use of NULL in arithmetic operation}}55 a -= NULL; // expected-warning{{use of NULL in arithmetic operation}}56 a /= NULL; // expected-warning{{use of NULL in arithmetic operation}} \57 // expected-warning{{division by zero is undefined}}58 a *= NULL; // expected-warning{{use of NULL in arithmetic operation}}59 a >>= NULL; // expected-warning{{use of NULL in arithmetic operation}}60 a <<= NULL; // expected-warning{{use of NULL in arithmetic operation}}61 a %= NULL; // expected-warning{{use of NULL in arithmetic operation}} \62 // expected-warning{{remainder by zero is undefined}}63 a &= NULL; // expected-warning{{use of NULL in arithmetic operation}}64 a |= NULL; // expected-warning{{use of NULL in arithmetic operation}}65 a ^= NULL; // expected-warning{{use of NULL in arithmetic operation}}66 67 b = a < NULL || a > NULL; // expected-warning 2{{comparison between NULL and non-pointer ('int' and NULL)}}68 b = NULL < a || NULL > a; // expected-warning 2{{comparison between NULL and non-pointer (NULL and 'int')}}69 b = a <= NULL || a >= NULL; // expected-warning 2{{comparison between NULL and non-pointer ('int' and NULL)}}70 b = NULL <= a || NULL >= a; // expected-warning 2{{comparison between NULL and non-pointer (NULL and 'int')}}71 b = a == NULL || a != NULL; // expected-warning 2{{comparison between NULL and non-pointer ('int' and NULL)}}72 b = NULL == a || NULL != a; // expected-warning 2{{comparison between NULL and non-pointer (NULL and 'int')}}73 74 b = &a < NULL || NULL < &a || &a > NULL || NULL > &a; // expected-error 4{{ordered comparison between pointer and zero}}75 b = &a <= NULL || NULL <= &a || &a >= NULL || NULL >= &a; // expected-error 4{{ordered comparison between pointer and zero}}76 b = &a == NULL || NULL == &a || &a != NULL || NULL != &a;77 78 b = 0 == a;79 b = 0 == &a;80 81 b = NULL < NULL || NULL > NULL;82 b = NULL <= NULL || NULL >= NULL;83 b = NULL == NULL || NULL != NULL;84 85 b = ((NULL)) != a; // expected-warning{{comparison between NULL and non-pointer (NULL and 'int')}}86 87 // Check that even non-standard pointers don't warn.88 b = c == NULL || NULL == c || c != NULL || NULL != c;89 b = d == NULL || NULL == d || d != NULL || NULL != d;90 b = e == NULL || NULL == e || e != NULL || NULL != e;91 b = f == NULL || NULL == f || f != NULL || NULL != f;92 b = "f" == NULL || NULL == "f" || "f" != NULL || NULL != "f";93 94 return NULL; // expected-error{{void function 'f' should not return a value}}95}96