// RUN: %clang_cc1 -std=c++11 -triple x86_64-apple-darwin10 -emit-llvm -o - %s -fsanitize=alignment | FileCheck %s --check-prefixes=CHECK,ALIGN
// RUN: %clang_cc1 -std=c++11 -triple x86_64-apple-darwin10 -emit-llvm -o - %s -fsanitize=null | FileCheck %s --check-prefixes=CHECK,NULL
// RUN: %clang_cc1 -std=c++11 -triple x86_64-apple-darwin10 -emit-llvm -o - %s -fsanitize=alignment,null -DCHECK_LAMBDA | FileCheck %s --check-prefixes=LAMBDA
// CHECK-LABEL: define{{.*}} void @_Z22load_non_null_pointersv
void load_non_null_pointers() {
int var;
var = *&var;
int arr[1];
arr[0] = arr[0];
char c = "foo"[0];
// CHECK-NOT: and i64 {{.*}}, !nosanitize
// CHECK-NOT: icmp ne {{.*}}, null, !nosanitize
// CHECK: ret void
}
// CHECK-LABEL: define{{.*}} void @_Z31use_us16_aligned_array_elementsv
void use_us16_aligned_array_elements() {
static const unsigned short Arr[] = {0, 1, 2};
auto use_array = [](const unsigned short(&X)[3]) -> void {};
use_array(Arr);
// CHECK-NOT: br i1 true
// ALIGN-NOT: call void @__ubsan_handle_type_mismatch
// CHECK: ret void
}
struct A {
int foo;
// CHECK-LABEL: define linkonce_odr void @_ZN1A10do_nothingEv
void do_nothing() {
// ALIGN: %[[THISINT1:[0-9]+]] = ptrtoint ptr %{{.*}} to i64, !nosanitize
// ALIGN: and i64 %[[THISINT1]], 3, !nosanitize
// NULL: icmp ne ptr %[[THIS1:[a-z0-9]+]], null, !nosanitize
// NULL: ptrtoint ptr %[[THIS1]] to i64, !nosanitize
// CHECK: call void @__ubsan_handle_type_mismatch
// CHECK-NOT: call void @__ubsan_handle_type_mismatch
// CHECK: ret void
}
#ifdef CHECK_LAMBDA
// LAMBDA-LABEL: define linkonce_odr void @_ZN1A22do_nothing_with_lambdaEv
void do_nothing_with_lambda() {
// LAMBDA: icmp ne ptr %[[THIS2:[a-z0-9]+]], null, !nosanitize
// LAMBDA: %[[THISINT2:[0-9]+]] = ptrtoint ptr %[[THIS2]] to i64, !nosanitize
// LAMBDA: and i64 %[[THISINT2]], 3, !nosanitize
// LAMBDA: call void @__ubsan_handle_type_mismatch
auto f = [&] {
foo = 0;
};
f();
// LAMBDA-NOT: call void @__ubsan_handle_type_mismatch
// LAMBDA: ret void
}
// Check the IR for the lambda:
//
// LAMBDA-LABEL: define linkonce_odr void @_ZZN1A22do_nothing_with_lambdaEvENKUlvE_clEv
// LAMBDA: call void @__ubsan_handle_type_mismatch
// LAMBDA-NOT: call void @__ubsan_handle_type_mismatch
// LAMBDA: ret void
#endif
// CHECK-LABEL: define linkonce_odr noundef i32 @_ZN1A11load_memberEv
int load_member() {
// ALIGN: %[[THISINT3:[0-9]+]] = ptrtoint ptr %{{.*}} to i64, !nosanitize
// ALIGN: and i64 %[[THISINT3]], 3, !nosanitize
// NULL: icmp ne ptr %[[THIS3:[a-z0-9]+]], null, !nosanitize
// NULL: ptrtoint ptr %[[THIS3]] to i64, !nosanitize
// CHECK: call void @__ubsan_handle_type_mismatch
// CHECK-NOT: call void @__ubsan_handle_type_mismatch
return foo;
// CHECK: ret i32
}
// CHECK-LABEL: define linkonce_odr noundef i32 @_ZN1A11call_methodEv
int call_method() {
// ALIGN: %[[THISINT4:[0-9]+]] = ptrtoint ptr %{{.*}} to i64, !nosanitize
// ALIGN: and i64 %[[THISINT4]], 3, !nosanitize
// NULL: icmp ne ptr %[[THIS4:[a-z0-9]+]], null, !nosanitize
// NULL: ptrtoint ptr %[[THIS4]] to i64, !nosanitize
// CHECK: call void @__ubsan_handle_type_mismatch
// CHECK-NOT: call void @__ubsan_handle_type_mismatch
return load_member();
// CHECK: ret i32
}
// CHECK-LABEL: define linkonce_odr void @_ZN1A15assign_member_1Ev
void assign_member_1() {
// ALIGN: %[[THISINT5:[0-9]+]] = ptrtoint ptr %{{.*}} to i64, !nosanitize
// ALIGN: and i64 %[[THISINT5]], 3, !nosanitize
// NULL: icmp ne ptr %[[THIS5:[a-z0-9]+]], null, !nosanitize
// NULL: ptrtoint ptr %[[THIS5]] to i64, !nosanitize
// CHECK: call void @__ubsan_handle_type_mismatch
// CHECK-NOT: call void @__ubsan_handle_type_mismatch
foo = 0;
// CHECK: ret void
}
// CHECK-LABEL: define linkonce_odr void @_ZN1A15assign_member_2Ev
void assign_member_2() {
// ALIGN: %[[THISINT6:[0-9]+]] = ptrtoint ptr %{{.*}} to i64, !nosanitize
// ALIGN: and i64 %[[THISINT6]], 3, !nosanitize
// NULL: icmp ne ptr %[[THIS6:[a-z0-9]+]], null, !nosanitize
// NULL: ptrtoint ptr %[[THIS6]] to i64, !nosanitize
// CHECK: call void @__ubsan_handle_type_mismatch
// CHECK-NOT: call void @__ubsan_handle_type_mismatch
(__extension__ (this))->foo = 0;
// CHECK: ret void
}
// CHECK-LABEL: define linkonce_odr void @_ZNK1A15assign_member_3Ev
void assign_member_3() const {
// ALIGN: %[[THISINT7:[0-9]+]] = ptrtoint ptr %{{.*}} to i64, !nosanitize
// ALIGN: and i64 %[[THISINT7]], 3, !nosanitize
// NULL: icmp ne ptr %[[THIS7:[a-z0-9]+]], null, !nosanitize
// NULL: ptrtoint ptr %[[THIS7]] to i64, !nosanitize
// CHECK: call void @__ubsan_handle_type_mismatch
// CHECK-NOT: call void @__ubsan_handle_type_mismatch
const_cast<A *>(this)->foo = 0;
// CHECK: ret void
}
// CHECK-LABEL: define linkonce_odr noundef i32 @_ZN1A22call_through_referenceERS_
static int call_through_reference(A &a) {
// ALIGN: %[[OBJINT:[0-9]+]] = ptrtoint ptr %{{.*}} to i64, !nosanitize
// ALIGN: and i64 %[[OBJINT]], 3, !nosanitize
// ALIGN: call void @__ubsan_handle_type_mismatch
// NULL-NOT: call void @__ubsan_handle_type_mismatch
return a.load_member();
// CHECK: ret i32
}
// CHECK-LABEL: define linkonce_odr noundef i32 @_ZN1A20call_through_pointerEPS_
static int call_through_pointer(A *a) {
// CHECK: call void @__ubsan_handle_type_mismatch
return a->load_member();
// CHECK: ret i32
}
};
struct B {
operator A*() const { return nullptr; }
// CHECK-LABEL: define linkonce_odr noundef i32 @_ZN1B11load_memberEPS_
static int load_member(B *bp) {
// Check &b before converting it to an A*.
// CHECK: call void @__ubsan_handle_type_mismatch
//
// Check the result of the conversion before using it.
// NULL: call void @__ubsan_handle_type_mismatch
//
// CHECK-NOT: call void @__ubsan_handle_type_mismatch
return static_cast<A *>(*bp)->load_member();
// CHECK: ret i32
}
};
struct Base {
int foo;
virtual int load_member_1() = 0;
};
struct Derived : public Base {
int bar;
// CHECK-LABEL: define linkonce_odr noundef i32 @_ZN7Derived13load_member_2Ev
int load_member_2() {
// ALIGN: %[[THISINT8:[0-9]+]] = ptrtoint ptr %{{.*}} to i64, !nosanitize
// ALIGN: and i64 %[[THISINT8]], 7, !nosanitize
// ALIGN: call void @__ubsan_handle_type_mismatch
// NULL: icmp ne ptr %[[THIS8:[a-z0-9]+]], null, !nosanitize
// NULL: ptrtoint ptr %[[THIS8]] to i64, !nosanitize
// CHECK: call void @__ubsan_handle_type_mismatch
//
// Check the result of the cast before using it.
// CHECK: call void @__ubsan_handle_type_mismatch
//
// CHECK-NOT: call void @__ubsan_handle_type_mismatch
return dynamic_cast<Base *>(this)->load_member_1();
// CHECK: ret i32
}
// CHECK-LABEL: define linkonce_odr noundef i32 @_ZN7Derived13load_member_3Ev
int load_member_3() {
// ALIGN: %[[THISINT9:[0-9]+]] = ptrtoint ptr %{{.*}} to i64, !nosanitize
// ALIGN: and i64 %[[THISINT9]], 7, !nosanitize
// ALIGN: call void @__ubsan_handle_type_mismatch
// ALIGN: call void @__ubsan_handle_type_mismatch
// NULL: icmp ne ptr %[[THIS9:[a-z0-9]+]], null, !nosanitize
// NULL: ptrtoint ptr %[[THIS9]] to i64, !nosanitize
// CHECK: call void @__ubsan_handle_type_mismatch
// CHECK-NOT: call void @__ubsan_handle_type_mismatch
return reinterpret_cast<Derived *>(static_cast<Base *>(this))->foo;
// CHECK: ret i32
}
// CHECK-LABEL: define linkonce_odr noundef i32 @_ZN7Derived13load_member_1Ev
int load_member_1() override {
// ALIGN: %[[THISINT10:[0-9]+]] = ptrtoint ptr %{{.*}} to i64, !nosanitize
// ALIGN: and i64 %[[THISINT10]], 7, !nosanitize
// ALIGN: call void @__ubsan_handle_type_mismatch
// NULL: icmp ne ptr %[[THIS10:[a-z0-9]+]], null, !nosanitize
// NULL: ptrtoint ptr %[[THIS10]] to i64, !nosanitize
// CHECK: call void @__ubsan_handle_type_mismatch
// CHECK-NOT: call void @__ubsan_handle_type_mismatch
return foo + bar;
// CHECK: ret i32
}
};
void force_irgen() {
A *a;
a->do_nothing();
#ifdef CHECK_LAMBDA
a->do_nothing_with_lambda();
#endif
a->load_member();
a->call_method();
a->assign_member_1();
a->assign_member_2();
a->assign_member_3();
A::call_through_reference(*a);
A::call_through_pointer(a);
B::load_member(nullptr);
Base *b = new Derived;
b->load_member_1();
Derived *d;
d->load_member_2();
d->load_member_3();
load_non_null_pointers();
use_us16_aligned_array_elements();
}
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