diff options
Diffstat (limited to 'clang/test/SemaCXX/null_in_arithmetic_ops.cpp')
| -rw-r--r-- | clang/test/SemaCXX/null_in_arithmetic_ops.cpp | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/clang/test/SemaCXX/null_in_arithmetic_ops.cpp b/clang/test/SemaCXX/null_in_arithmetic_ops.cpp new file mode 100644 index 00000000000..547c936c3e5 --- /dev/null +++ b/clang/test/SemaCXX/null_in_arithmetic_ops.cpp @@ -0,0 +1,70 @@ +// RUN: %clang_cc1 -fsyntax-only -fblocks -verify %s +#include <stddef.h> + +void f() { + int a; + bool b; + + a = 0 ? NULL + a : a + NULL; // expected-warning 2{{use of NULL in arithmetic operation}} + a = 0 ? NULL - a : a - NULL; // expected-warning 2{{use of NULL in arithmetic operation}} + a = 0 ? NULL / a : a / NULL; // expected-warning 2{{use of NULL in arithmetic operation}} \ + // expected-warning {{division by zero is undefined}} + a = 0 ? NULL * a : a * NULL; // expected-warning 2{{use of NULL in arithmetic operation}} + a = 0 ? NULL >> a : a >> NULL; // expected-warning 2{{use of NULL in arithmetic operation}} + a = 0 ? NULL << a : a << NULL; // expected-warning 2{{use of NULL in arithmetic operation}} + a = 0 ? NULL % a : a % NULL; // expected-warning 2{{use of NULL in arithmetic operation}} \ + expected-warning {{remainder by zero is undefined}} + a = 0 ? NULL & a : a & NULL; // expected-warning 2{{use of NULL in arithmetic operation}} + a = 0 ? NULL | a : a | NULL; // expected-warning 2{{use of NULL in arithmetic operation}} + a = 0 ? NULL ^ a : a ^ NULL; // expected-warning 2{{use of NULL in arithmetic operation}} + + // Using two NULLs should only give one error instead of two. + a = NULL + NULL; // expected-warning{{use of NULL in arithmetic operation}} + a = NULL - NULL; // expected-warning{{use of NULL in arithmetic operation}} + a = NULL / NULL; // expected-warning{{use of NULL in arithmetic operation}} \ + // expected-warning{{division by zero is undefined}} + a = NULL * NULL; // expected-warning{{use of NULL in arithmetic operation}} + a = NULL >> NULL; // expected-warning{{use of NULL in arithmetic operation}} + a = NULL << NULL; // expected-warning{{use of NULL in arithmetic operation}} + a = NULL % NULL; // expected-warning{{use of NULL in arithmetic operation}} \ + // expected-warning{{remainder by zero is undefined}} + a = NULL & NULL; // expected-warning{{use of NULL in arithmetic operation}} + a = NULL | NULL; // expected-warning{{use of NULL in arithmetic operation}} + a = NULL ^ NULL; // expected-warning{{use of NULL in arithmetic operation}} + + a += NULL; // expected-warning{{use of NULL in arithmetic operation}} + a -= NULL; // expected-warning{{use of NULL in arithmetic operation}} + a /= NULL; // expected-warning{{use of NULL in arithmetic operation}} \ + // expected-warning{{division by zero is undefined}} + a *= NULL; // expected-warning{{use of NULL in arithmetic operation}} + a >>= NULL; // expected-warning{{use of NULL in arithmetic operation}} + a <<= NULL; // expected-warning{{use of NULL in arithmetic operation}} + a %= NULL; // expected-warning{{use of NULL in arithmetic operation}} \ + // expected-warning{{remainder by zero is undefined}} + a &= NULL; // expected-warning{{use of NULL in arithmetic operation}} + a |= NULL; // expected-warning{{use of NULL in arithmetic operation}} + a ^= NULL; // expected-warning{{use of NULL in arithmetic operation}} + + b = a < NULL || NULL < a; // expected-warning 2{{use of NULL in arithmetic operation}} + b = a > NULL || NULL > a; // expected-warning 2{{use of NULL in arithmetic operation}} + b = a <= NULL || NULL <= a; // expected-warning 2{{use of NULL in arithmetic operation}} + b = a >= NULL || NULL >= a; // expected-warning 2{{use of NULL in arithmetic operation}} + b = a == NULL || NULL == a; // expected-warning 2{{use of NULL in arithmetic operation}} + b = a != NULL || NULL != a; // expected-warning 2{{use of NULL in arithmetic operation}} + + b = &a < NULL || NULL < &a || &a > NULL || NULL > &a; + b = &a <= NULL || NULL <= &a || &a >= NULL || NULL >= &a; + b = &a == NULL || NULL == &a || &a != NULL || NULL != &a; + + b = 0 == a; + b = 0 == &a; + + b = ((NULL)) != a; // expected-warning{{use of NULL in arithmetic operation}} + + void (^c)(); + b = c == NULL || NULL == c || c != NULL || NULL != c; + + class X; + void (X::*d) (); + b = d == NULL || NULL == d || d != NULL || NULL != d; +} |
