diff options
Diffstat (limited to 'clang/test/SemaCXX/null_in_arithmetic_ops.cpp')
| -rw-r--r-- | clang/test/SemaCXX/null_in_arithmetic_ops.cpp | 28 |
1 files changed, 20 insertions, 8 deletions
diff --git a/clang/test/SemaCXX/null_in_arithmetic_ops.cpp b/clang/test/SemaCXX/null_in_arithmetic_ops.cpp index 78c76e7e4c2..9665c3959e7 100644 --- a/clang/test/SemaCXX/null_in_arithmetic_ops.cpp +++ b/clang/test/SemaCXX/null_in_arithmetic_ops.cpp @@ -4,6 +4,12 @@ void f() { int a; bool b; + void (^c)(); + class X; + void (X::*d) (); + extern void e(); + int f[2]; + const void *v; 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}} @@ -18,6 +24,19 @@ void f() { 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}} + // Check for warnings or errors when doing arithmetic on pointers and other + // types. + v = 0 ? NULL + &a : &a + NULL; // expected-warning 2{{use of NULL in arithmetic operation}} + v = 0 ? NULL + c : c + NULL; // \ + expected-error {{invalid operands to binary expression ('long' and 'void (^)()')}} \ + expected-error {{invalid operands to binary expression ('void (^)()' and 'long')}} + v = 0 ? NULL + d : d + NULL; // \ + expected-error {{invalid operands to binary expression ('long' and 'void (X::*)()')}} \ + expected-error {{invalid operands to binary expression ('void (X::*)()' and 'long')}} + v = 0 ? NULL + e : e + NULL; // expected-error 2{{arithmetic on pointer to function type}} + v = 0 ? NULL + f : f + NULL; // expected-warning 2{{use of NULL in arithmetic operation}} + v = 0 ? NULL + "f" : "f" + 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}} @@ -65,17 +84,10 @@ void f() { b = ((NULL)) != a; // expected-warning{{use of NULL in arithmetic operation}} - void (^c)(); + // Check that even non-standard pointers don't warn. b = c == NULL || NULL == c || c != NULL || NULL != c; - - class X; - void (X::*d) (); b = d == NULL || NULL == d || d != NULL || NULL != d; - - extern void e(); b = e == NULL || NULL == e || e != NULL || NULL != e; - - int f[2]; b = f == NULL || NULL == f || f != NULL || NULL != f; b = "f" == NULL || NULL == "f" || "f" != NULL || NULL != "f"; } |
