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-rw-r--r--test/SemaCXX/null_in_arithmetic_ops.cpp28
1 files changed, 20 insertions, 8 deletions
diff --git a/test/SemaCXX/null_in_arithmetic_ops.cpp b/test/SemaCXX/null_in_arithmetic_ops.cpp
index 78c76e7e4c..9665c3959e 100644
--- a/test/SemaCXX/null_in_arithmetic_ops.cpp
+++ b/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";
}