clang/test/CodeGenCXX/sanitize-dtor-bit-field.cpp

   1 // Test -fsanitize-memory-use-after-dtor
   2 // RUN: %clang_cc1 -O0 -fsanitize=memory -fsanitize-memory-use-after-dtor -disable-llvm-passes -std=c++11 -triple=x86_64-pc-linux -emit-llvm -debug-info-kind=line-tables-only -o - %s | FileCheck %s --implicit-check-not="call void @__sanitizer_"
   3 // RUN: %clang_cc1 -O1 -fsanitize=memory -fsanitize-memory-use-after-dtor -disable-llvm-passes -std=c++11 -triple=x86_64-pc-linux -emit-llvm -debug-info-kind=line-tables-only -o - %s | FileCheck %s --implicit-check-not="call void @__sanitizer_"
   4
   5 // 24 bytes total
   6 struct Packed {
   7   // Packed into 4 bytes
   8   unsigned int a : 1;
   9   unsigned int b : 1;
  10   //unsigned int c : 1;
  11   // Force alignment to next 4 bytes
  12   unsigned int   : 0;
  13   unsigned int d : 1;
  14   // Force alignment, 8 more bytes
  15   double e = 5.0;
  16   // 4 bytes
  17   unsigned int f : 1;
  18   ~Packed() {}
  19 };
  20 Packed p;
  21
  22
  23 // 1 byte total
  24 struct Empty {
  25   unsigned int : 0;
  26   ~Empty() {}
  27 };
  28 Empty e;
  29
  30
  31 // 4 byte total
  32 struct Simple {
  33   unsigned int a : 1;
  34   ~Simple() {}
  35 };
  36 Simple s;
  37
  38
  39 // 8 bytes total
  40 struct Anon {
  41   // 1 byte
  42   unsigned int a : 1;
  43   unsigned int b : 2;
  44   // Force alignment to next byte
  45   unsigned int   : 0;
  46   unsigned int c : 1;
  47   ~Anon() {}
  48 };
  49 Anon an;
  50
  51
  52 struct CharStruct {
  53   char c;
  54   ~CharStruct();
  55 };
  56
  57 struct Adjacent {
  58   CharStruct a;
  59   int b : 1;
  60   CharStruct c;
  61   ~Adjacent() {}
  62 };
  63 Adjacent ad;
  64
  65 // CHECK-LABEL: define {{.*}}PackedD2Ev
  66 // CHECK: call void @__sanitizer_dtor_callback_fields({{.*}}i64 17{{.*}}, !dbg ![[DI1:[0-9]+]]
  67 // CHECK: ret void
  68
  69 // CHECK-LABEL: define {{.*}}EmptyD2Ev
  70 // CHECK: ret void
  71
  72 // CHECK-LABEL: define {{.*}}SimpleD2Ev
  73 // CHECK: call void @__sanitizer_dtor_callback_fields({{.*}}i64 1{{.*}}, !dbg ![[DI2:[0-9]+]]
  74 // CHECK: ret void
  75
  76 // CHECK-LABEL: define {{.*}}AnonD2Ev
  77 // CHECK: call void @__sanitizer_dtor_callback_fields({{.*}}i64 5{{.*}}, !dbg ![[DI3:[0-9]+]]
  78 // CHECK: ret void
  79
  80 // CHECK-LABEL: define {{.*}}AdjacentD2Ev
  81 // CHECK: call void @__sanitizer_dtor_callback_fields({{.*}}i64 1{{.*}}, !dbg ![[DI4:[0-9]+]]
  82 // CHECK: ret void
  83
  84 // CHECK-LABEL: !DIFile{{.*}}cpp
  85
  86 // CHECK-DAG: ![[DI1]] = {{.*}}line: [[@LINE-78]]
  87 // CHECK-DAG: ![[DI2]] = {{.*}}line: [[@LINE-54]]
  88 // CHECK-DAG: ![[DI3]] = {{.*}}line: [[@LINE-46]]
  89 // CHECK-DAG: ![[DI4]] = {{.*}}line: [[@LINE-30]]