sanitize-dtor-bit-field.cpp
1.75 KB
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// Test -fsanitize-memory-use-after-dtor
// RUN: %clang_cc1 -O0 -fsanitize=memory -fsanitize-memory-use-after-dtor -disable-llvm-passes -std=c++11 -triple=x86_64-pc-linux -emit-llvm -o - %s | FileCheck %s
// RUN: %clang_cc1 -O1 -fsanitize=memory -fsanitize-memory-use-after-dtor -disable-llvm-passes -std=c++11 -triple=x86_64-pc-linux -emit-llvm -o - %s | FileCheck %s
// 24 bytes total
struct Packed {
// Packed into 4 bytes
unsigned int a : 1;
unsigned int b : 1;
//unsigned int c : 1;
// Force alignment to next 4 bytes
unsigned int : 0;
unsigned int d : 1;
// Force alignment, 8 more bytes
double e = 5.0;
// 4 bytes
unsigned int f : 1;
~Packed() {}
};
Packed p;
// 1 byte total
struct Empty {
unsigned int : 0;
~Empty() {}
};
Empty e;
// 4 byte total
struct Simple {
unsigned int a : 1;
~Simple() {}
};
Simple s;
// 8 bytes total
struct Anon {
// 1 byte
unsigned int a : 1;
unsigned int b : 2;
// Force alignment to next byte
unsigned int : 0;
unsigned int c : 1;
~Anon() {}
};
Anon an;
struct CharStruct {
char c;
~CharStruct();
};
struct Adjacent {
CharStruct a;
int b : 1;
CharStruct c;
~Adjacent() {}
};
Adjacent ad;
// CHECK-LABEL: define {{.*}}PackedD2Ev
// CHECK: call void @__sanitizer_dtor_callback{{.*}}i64 17
// CHECK: ret void
// CHECK-LABEL: define {{.*}}EmptyD2Ev
// CHECK-NOT: call void @__sanitizer_dtor_callback{{.*}}i64 0
// CHECK: ret void
// CHECK-LABEL: define {{.*}}SimpleD2Ev
// CHECK: call void @__sanitizer_dtor_callback{{.*}}i64 1
// CHECK: ret void
// CHECK-LABEL: define {{.*}}AnonD2Ev
// CHECK: call void @__sanitizer_dtor_callback{{.*}}i64 5
// CHECK: ret void
// CHECK-LABEL: define {{.*}}AdjacentD2Ev
// CHECK: call void @__sanitizer_dtor_callback{{.*}}i64 1
// CHECK: ret void