| // RUN: clang -grsimple -verify %s |
| |
| #include <Foundation/NSString.h> |
| #include <Foundation/NSArray.h> |
| |
| void f1() { |
| NSString *aString; |
| unsigned i = [aString length]; // expected-warning {{Receiver in message expression is an uninitialized value}} |
| } |
| |
| void f2() { |
| NSString *aString = nil; |
| unsigned i = [aString length]; // no-warning |
| } |
| |
| void f3() { |
| NSMutableArray *aArray = [NSArray array]; |
| NSString *aString; |
| [aArray addObject:aString]; // expected-warning {{Pass-by-value argument in message expression is undefined.}} |
| } |