clang/test/Analysis/temporaries.mm


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29

// RUN: %clang_analyze_cc1 -std=c++14 -analyzer-checker core,cplusplus -verify %s

// expected-no-diagnostics

#define nil ((id)0)

// Stripped down unique_ptr<int>
struct IntPtr {
  IntPtr(): i(new int) {}
  IntPtr(IntPtr &&o): i(o.i) { o.i = nullptr; }
  ~IntPtr() { delete i; }

  int *i;
};

@interface Foo {}
  -(void) foo: (IntPtr)arg;
@end

void testArgumentRegionInvalidation(Foo *f) {
  IntPtr ptr;
  int *i = ptr.i;
  [f foo: static_cast<IntPtr &&>(ptr)];
  *i = 99; // no-warning
}

void testNilReceiverCleanup() {
  [nil foo: IntPtr()];
}