File: address-sanitizer-and-array-cookie.cpp

package info (click to toggle)
llvm-toolchain-13 1%3A13.0.1-11
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,418,840 kB
  • sloc: cpp: 5,290,826; ansic: 996,570; asm: 544,593; python: 188,212; objc: 72,027; lisp: 30,291; f90: 25,395; sh: 24,898; javascript: 9,780; pascal: 9,398; perl: 7,484; ml: 5,432; awk: 3,523; makefile: 2,913; xml: 953; cs: 573; fortran: 539
file content (64 lines) | stat: -rw-r--r-- 1,814 bytes parent folder | download | duplicates (22)
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
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
// RUN: %clang_cc1 -triple x86_64-gnu-linux -emit-llvm -o - %s | FileCheck %s -check-prefix=PLAIN
// RUN: %clang_cc1 -triple x86_64-gnu-linux -emit-llvm -o - -fsanitize=address %s | FileCheck %s -check-prefix=ASAN
// RUN: %clang_cc1 -triple x86_64-gnu-linux -emit-llvm -o - -fsanitize=address -fsanitize-address-poison-custom-array-cookie %s | FileCheck %s -check-prefix=ASAN-POISON-ALL-NEW-ARRAY

typedef __typeof__(sizeof(0)) size_t;
namespace std {
  struct nothrow_t {};
  std::nothrow_t nothrow;
}
void *operator new[](size_t, const std::nothrow_t &) throw();
void *operator new[](size_t, char *);
void *operator new[](size_t, int, int);

struct C {
  int x;
  ~C();
};

C *CallNew() {
  return new C[10];
}
// PLAIN-LABEL: CallNew
// PLAIN-NOT: nosanitize
// PLAIN-NOT: __asan_poison_cxx_array_cookie
// ASAN-LABEL: CallNew
// ASAN: store{{.*}}nosanitize
// ASAN-NOT: nosanitize
// ASAN: call void @__asan_poison_cxx_array_cookie

C *CallNewNoThrow() {
  return new (std::nothrow) C[10];
}
// PLAIN-LABEL: CallNewNoThrow
// PLAIN-NOT: nosanitize
// PLAIN-NOT: __asan_poison_cxx_array_cookie
// ASAN-LABEL: CallNewNoThrow
// ASAN: store{{.*}}nosanitize
// ASAN-NOT: nosanitize
// ASAN: call void @__asan_poison_cxx_array_cookie

void CallDelete(C *c) {
  delete [] c;
}

// PLAIN-LABEL: CallDelete
// PLAIN-NOT: nosanitize
// ASAN-LABEL: CallDelete
// ASAN-NOT: nosanitize
// ASAN: call i64 @__asan_load_cxx_array_cookie
// ASAN-NOT: nosanitize

char Buffer[20];
C *CallPlacementNew() {
  return new (Buffer) C[20];
}
// ASAN-LABEL: CallPlacementNew
// ASAN-NOT: __asan_poison_cxx_array_cookie

C *CallNewWithArgs() {
// ASAN-LABEL: CallNewWithArgs
// ASAN-NOT: call void @__asan_poison_cxx_array_cookie
// ASAN-POISON-ALL-NEW-ARRAY: call void @__asan_poison_cxx_array_cookie
  return new (123, 456) C[20];
}