clang/test/CodeGen/address-sanitizer-and-array-cookie.cpp

   1 // RUN: %clang_cc1 -triple x86_64-gnu-linux -emit-llvm -o - %s | FileCheck %s -check-prefix=PLAIN
   2 // RUN: %clang_cc1 -triple x86_64-gnu-linux -emit-llvm -o - -fsanitize=address %s | FileCheck %s -check-prefix=ASAN
   3 // 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
   4
   5 typedef __typeof__(sizeof(0)) size_t;
   6 namespace std {
   7   struct nothrow_t {};
   8   std::nothrow_t nothrow;
   9 }
  10 void *operator new[](size_t, const std::nothrow_t &) throw();
  11 void *operator new[](size_t, char *);
  12 void *operator new[](size_t, int, int);
  13
  14 struct C {
  15   int x;
  16   ~C();
  17 };
  18
  19 C *CallNew() {
  20   return new C[10];
  21 }
  22 // PLAIN-LABEL: CallNew
  23 // PLAIN-NOT: nosanitize
  24 // PLAIN-NOT: __asan_poison_cxx_array_cookie
  25 // ASAN-LABEL: CallNew
  26 // ASAN: store{{.*}}nosanitize
  27 // ASAN-NOT: nosanitize
  28 // ASAN: call void @__asan_poison_cxx_array_cookie
  29
  30 C *CallNewNoThrow() {
  31   return new (std::nothrow) C[10];
  32 }
  33 // PLAIN-LABEL: CallNewNoThrow
  34 // PLAIN-NOT: nosanitize
  35 // PLAIN-NOT: __asan_poison_cxx_array_cookie
  36 // ASAN-LABEL: CallNewNoThrow
  37 // ASAN: store{{.*}}nosanitize
  38 // ASAN-NOT: nosanitize
  39 // ASAN: call void @__asan_poison_cxx_array_cookie
  40
  41 void CallDelete(C *c) {
  42   delete [] c;
  43 }
  44
  45 // PLAIN-LABEL: CallDelete
  46 // PLAIN-NOT: nosanitize
  47 // ASAN-LABEL: CallDelete
  48 // ASAN-NOT: nosanitize
  49 // ASAN: call i64 @__asan_load_cxx_array_cookie
  50 // ASAN-NOT: nosanitize
  51
  52 char Buffer[20];
  53 C *CallPlacementNew() {
  54   return new (Buffer) C[20];
  55 }
  56 // ASAN-LABEL: CallPlacementNew
  57 // ASAN-NOT: __asan_poison_cxx_array_cookie
  58
  59 C *CallNewWithArgs() {
  60 // ASAN-LABEL: CallNewWithArgs
  61 // ASAN-NOT: call void @__asan_poison_cxx_array_cookie
  62 // ASAN-POISON-ALL-NEW-ARRAY: call void @__asan_poison_cxx_array_cookie
  63   return new (123, 456) C[20];
  64 }