1// RUN: %clang_analyze_cc1 -verify -Wno-objc-root-class %s \
2// RUN:   -Wno-tautological-pointer-compare \
3// RUN:   -analyzer-checker=core \
4// RUN:   -analyzer-checker=nullability \
5// RUN:   -analyzer-checker=debug.ExprInspection
6
7void clang_analyzer_eval(int);
8
9@interface TestFunctionLevelAnnotations
10- (void)method1:(int *_Nonnull)x;
11- (void)method2:(int *)x __attribute__((nonnull));
12@end
13
14@implementation TestFunctionLevelAnnotations
15- (void)method1:(int *_Nonnull)x {
16  clang_analyzer_eval(x != 0); // expected-warning{{TRUE}}
17}
18
19- (void)method2:(int *)x {
20  clang_analyzer_eval(x != 0); // expected-warning{{TRUE}}
21}
22@end
23
24typedef struct NestedNonnullMember {
25  struct NestedNonnullMember *Child;
26  int *_Nonnull Value;
27} NestedNonnullMember;
28
29NestedNonnullMember *foo();
30
31void f1(NestedNonnullMember *Root) {
32  NestedNonnullMember *Grandson = Root->Child->Child;
33
34  clang_analyzer_eval(Root->Value != 0);         // expected-warning{{TRUE}}
35  clang_analyzer_eval(Grandson->Value != 0);     // expected-warning{{TRUE}}
36  clang_analyzer_eval(foo()->Child->Value != 0); // expected-warning{{TRUE}}
37}
38
39// Check that we correctly process situations when non-pointer parameters
40// get nonnul attributes.
41// Original problem: rdar://problem/63150074
42typedef struct {
43  long a;
44} B;
45__attribute__((nonnull)) void c(B x, int *y);
46
47void c(B x, int *y) {
48  clang_analyzer_eval(y != 0); // expected-warning{{TRUE}}
49}
50