1// RUN: %clangxx -fsanitize=nonnull-attribute -fno-sanitize-recover=all %s -O3 -o %t
2// RUN: %run %t nc
3// RUN: %run %t nm
4// RUN: %run %t nf
5// RUN: %run %t nv
6// RUN: not %run %t 0c 2>&1 | FileCheck %s --check-prefix=CTOR
7// RUN: not %run %t 0m 2>&1 | FileCheck %s --check-prefix=METHOD
8// RUN: not %run %t 0f 2>&1 | FileCheck %s --check-prefix=FUNC
9// RUN: not %run %t 0v 2>&1 | FileCheck %s --check-prefix=VARIADIC
10//
11// AArch64 lacks variadic instrumentation for MSAN.
12// REQUIRES: stable-runtime
13
14class C {
15 int *null_;
16 int *nonnull_;
17
18public:
19 C(int *null, __attribute__((nonnull)) int *nonnull)
20 : null_(null), nonnull_(nonnull) {}
21 int value() { return *nonnull_; }
22 int method(int *nonnull, int *null) __attribute__((nonnull(2))) {
23 return *nonnull_ + *nonnull;
24 }
25};
26
27__attribute__((nonnull)) int func(int *nonnull) { return *nonnull; }
28
29#include <stdarg.h>
30__attribute__((nonnull)) int variadic(int x, ...) {
31 va_list args;
32 va_start(args, x);
33 int *nonnull = va_arg(args, int*);
34 int res = *nonnull;
35 va_end(args);
36 return res;
37}
38
39int main(int argc, char *argv[]) {
40 int local = 0;
41 int *arg = (argv[1][0] == '0') ? 0x0 : &local;
42 switch (argv[1][1]) {
43 case 'c':
44 return C(0x0, arg).value();
45 // CTOR: {{.*}}nonnull-arg.cpp:[[@LINE-1]]:21: runtime error: null pointer passed as argument 2, which is declared to never be null
46 // CTOR-NEXT: {{.*}}nonnull-arg.cpp:19:31: note: nonnull attribute specified here
47 case 'm':
48 return C(0x0, &local).method(nonnull: arg, null: 0x0);
49 // METHOD: {{.*}}nonnull-arg.cpp:[[@LINE-1]]:36: runtime error: null pointer passed as argument 1, which is declared to never be null
50 // METHOD-NEXT: {{.*}}nonnull-arg.cpp:22:54: note: nonnull attribute specified here
51 case 'f':
52 return func(nonnull: arg);
53 // FUNC: {{.*}}nonnull-arg.cpp:[[@LINE-1]]:19: runtime error: null pointer passed as argument 1, which is declared to never be null
54 // FUNC-NEXT: {{.*}}nonnull-arg.cpp:27:16: note: nonnull attribute specified here
55 case 'v':
56 return variadic(x: 42, arg);
57 // VARIADIC: {{.*}}nonnull-arg.cpp:[[@LINE-1]]:27: runtime error: null pointer passed as argument 2, which is declared to never be null
58 // VARIADIC-NEXT: {{.*}}nonnull-arg.cpp:30:16: note: nonnull attribute specified here
59 }
60 return 0;
61}
62

source code of compiler-rt/test/ubsan/TestCases/Misc/nonnull-arg.cpp