1 // Tests for the cfi-vcall feature:
2 // RUN: %clang_cc1 -flto -flto-unit -triple x86_64-unknown-linux -fvisibility hidden -fsanitize=cfi-vcall -fsanitize-trap=cfi-vcall -emit-llvm -o - %s | FileCheck --check-prefix=CFI --check-prefix=CFI-NVT --check-prefix=ITANIUM --check-prefix=TT-ITANIUM --check-prefix=NDIAG %s
3 // RUN: %clang_cc1 -flto -flto-unit -triple x86_64-unknown-linux -fvisibility hidden -fsanitize=cfi-vcall -emit-llvm -o - %s | FileCheck --check-prefix=CFI --check-prefix=CFI-NVT --check-prefix=ITANIUM --check-prefix=TT-ITANIUM --check-prefix=ITANIUM-DIAG --check-prefix=DIAG --check-prefix=DIAG-ABORT %s
4 // RUN: %clang_cc1 -flto -flto-unit -triple x86_64-unknown-linux -fvisibility hidden -fsanitize=cfi-vcall -fsanitize-recover=cfi-vcall -emit-llvm -o - %s | FileCheck --check-prefix=CFI --check-prefix=CFI-NVT --check-prefix=ITANIUM --check-prefix=TT-ITANIUM --check-prefix=ITANIUM-DIAG --check-prefix=DIAG --check-prefix=DIAG-RECOVER %s
5 // RUN: %clang_cc1 -flto -flto-unit -triple x86_64-pc-windows-msvc -fsanitize=cfi-vcall -fsanitize-trap=cfi-vcall -emit-llvm -o - %s | FileCheck --check-prefix=CFI --check-prefix=CFI-NVT --check-prefix=MS --check-prefix=TT-MS --check-prefix=NDIAG %s
6
7 // Tests for the whole-program-vtables feature:
8 // RUN: %clang_cc1 -flto -flto-unit -triple x86_64-unknown-linux -fvisibility hidden -fwhole-program-vtables -emit-llvm -o - %s | FileCheck --check-prefix=VTABLE-OPT --check-prefix=ITANIUM --check-prefix=TT-ITANIUM %s
9 // RUN: %clang_cc1 -flto -flto-unit -triple x86_64-pc-windows-msvc -fwhole-program-vtables -emit-llvm -o - %s | FileCheck --check-prefix=VTABLE-OPT --check-prefix=MS --check-prefix=TT-MS %s
10
11 // Tests for cfi + whole-program-vtables:
12 // RUN: %clang_cc1 -flto -flto-unit -triple x86_64-unknown-linux -fvisibility hidden -fsanitize=cfi-vcall -fsanitize-trap=cfi-vcall -fwhole-program-vtables -emit-llvm -o - %s | FileCheck --check-prefix=CFI --check-prefix=CFI-VT --check-prefix=ITANIUM --check-prefix=TC-ITANIUM %s
13 // RUN: %clang_cc1 -flto -flto-unit -triple x86_64-pc-windows-msvc -fsanitize=cfi-vcall -fsanitize-trap=cfi-vcall -fwhole-program-vtables -emit-llvm -o - %s | FileCheck --check-prefix=CFI --check-prefix=CFI-VT --check-prefix=MS --check-prefix=TC-MS %s
14
15 // ITANIUM: @_ZTV1A = {{[^!]*}}, !type [[A16:![0-9]+]]
16 // ITANIUM-DIAG-SAME: !type [[ALL16:![0-9]+]]
17 // ITANIUM-SAME: !type [[AF16:![0-9]+]]
18
19 // ITANIUM: @_ZTV1B = {{[^!]*}}, !type [[A32:![0-9]+]]
20 // ITANIUM-DIAG-SAME: !type [[ALL32:![0-9]+]]
21 // ITANIUM-SAME: !type [[AF32:![0-9]+]]
22 // ITANIUM-SAME: !type [[AF40:![0-9]+]]
23 // ITANIUM-SAME: !type [[AF48:![0-9]+]]
24 // ITANIUM-SAME: !type [[B32:![0-9]+]]
25 // ITANIUM-DIAG-SAME: !type [[ALL32]]
26 // ITANIUM-SAME: !type [[BF32:![0-9]+]]
27 // ITANIUM-SAME: !type [[BF40:![0-9]+]]
28 // ITANIUM-SAME: !type [[BF48:![0-9]+]]
29
30 // ITANIUM: @_ZTV1C = {{[^!]*}}, !type [[A32]]
31 // ITANIUM-DIAG-SAME: !type [[ALL32]]
32 // ITANIUM-SAME: !type [[AF32]]
33 // ITANIUM-SAME: !type [[C32:![0-9]+]]
34 // ITANIUM-DIAG-SAME: !type [[ALL32]]
35 // ITANIUM-SAME: !type [[CF32:![0-9]+]]
36
37 // DIAG: @[[SRC:.*]] = private unnamed_addr constant [{{.*}} x i8] c"{{.*}}type-metadata.cpp\00", align 1
38 // DIAG: @[[TYPE:.*]] = private unnamed_addr constant { i16, i16, [4 x i8] } { i16 -1, i16 0, [4 x i8] c"'A'\00" }
39 // DIAG: @[[BADTYPESTATIC:.*]] = private unnamed_addr global { i8, { [{{.*}} x i8]*, i32, i32 }, { i16, i16, [4 x i8] }* } { i8 0, { [{{.*}} x i8]*, i32, i32 } { [{{.*}} x i8]* @[[SRC]], i32 123, i32 3 }, { i16, i16, [4 x i8] }* @[[TYPE]] }
40
41 // ITANIUM: @_ZTVN12_GLOBAL__N_11DE = {{[^!]*}}, !type [[A32]]
42 // ITANIUM-DIAG-SAME: !type [[ALL32]]
43 // ITANIUM-SAME: !type [[AF32]]
44 // ITANIUM-SAME: !type [[AF40]]
45 // ITANIUM-SAME: !type [[AF48]]
46 // ITANIUM-SAME: !type [[B32]]
47 // ITANIUM-DIAG-SAME: !type [[ALL32]]
48 // ITANIUM-SAME: !type [[BF32]]
49 // ITANIUM-SAME: !type [[BF40]]
50 // ITANIUM-SAME: !type [[BF48]]
51 // ITANIUM-SAME: !type [[C88:![0-9]+]]
52 // ITANIUM-DIAG-SAME: !type [[ALL88:![0-9]+]]
53 // ITANIUM-SAME: !type [[CF32]]
54 // ITANIUM-SAME: !type [[CF40:![0-9]+]]
55 // ITANIUM-SAME: !type [[CF48:![0-9]+]]
56 // ITANIUM-SAME: !type [[D32:![0-9]+]]
57 // ITANIUM-DIAG-SAME: !type [[ALL32]]
58 // ITANIUM-SAME: !type [[DF32:![0-9]+]]
59 // ITANIUM-SAME: !type [[DF40:![0-9]+]]
60 // ITANIUM-SAME: !type [[DF48:![0-9]+]]
61
62 // ITANIUM: @_ZTCN12_GLOBAL__N_11DE0_1B = {{[^!]*}}, !type [[A32]]
63 // ITANIUM-DIAG-SAME: !type [[ALL32]]
64 // ITANIUM-SAME: !type [[B32]]
65 // ITANIUM-DIAG-SAME: !type [[ALL32]]
66
67 // ITANIUM: @_ZTCN12_GLOBAL__N_11DE8_1C = {{[^!]*}}, !type [[A64:![0-9]+]]
68 // ITANIUM-DIAG-SAME: !type [[ALL64:![0-9]+]]
69 // ITANIUM-SAME: !type [[AF64:![0-9]+]]
70 // ITANIUM-SAME: !type [[C32]]
71 // ITANIUM-DIAG-SAME: !type [[ALL32]]
72 // ITANIUM-SAME: !type [[CF64:![0-9]+]]
73
74 // ITANIUM: @_ZTVZ3foovE2FA = {{[^!]*}}, !type [[A16]]
75 // ITANIUM-DIAG-SAME: !type [[ALL16]]
76 // ITANIUM-SAME: !type [[AF16]]
77 // ITANIUM-SAME: !type [[FA16:![0-9]+]]
78 // ITANIUM-DIAG-SAME: !type [[ALL16]]
79 // ITANIUM-SAME: !type [[FAF16:![0-9]+]]
80
81 // MS: comdat($"??_7A@@6B@"), !type [[A8:![0-9]+]]
82 // MS: comdat($"??_7B@@6B0@@"), !type [[B8:![0-9]+]]
83 // MS: comdat($"??_7B@@6BA@@@"), !type [[A8]]
84 // MS: comdat($"??_7C@@6B@"), !type [[A8]]
85 // MS: comdat($"??_7D@?A0x{{[^@]*}}@@6BB@@@"), !type [[B8]], !type [[D8:![0-9]+]]
86 // MS: comdat($"??_7D@?A0x{{[^@]*}}@@6BA@@@"), !type [[A8]]
87 // MS: comdat($"??_7FA@?1??foo@@YAXXZ@6B@"), !type [[A8]], !type [[FA8:![0-9]+]]
88
89 struct A {
90 A();
91 virtual void f();
92 };
93
94 struct B : virtual A {
95 B();
96 virtual void g();
97 virtual void h();
98 };
99
100 struct C : virtual A {
101 C();
102 };
103
104 namespace {
105
106 struct D : B, C {
107 D();
108 virtual void f();
109 virtual void h();
110 };
111
112 }
113
A()114 A::A() {}
B()115 B::B() {}
C()116 C::C() {}
D()117 D::D() {}
118
f()119 void A::f() {
120 }
121
g()122 void B::g() {
123 }
124
f()125 void D::f() {
126 }
127
h()128 void D::h() {
129 }
130
131 // ITANIUM: define hidden void @_Z2afP1A
132 // MS: define dso_local void @"?af@@YAXPEAUA@@@Z"
af(A * a)133 void af(A *a) {
134 // TT-ITANIUM: [[P:%[^ ]*]] = call i1 @llvm.type.test(i8* [[VT:%[^ ]*]], metadata !"_ZTS1A")
135 // TT-MS: [[P:%[^ ]*]] = call i1 @llvm.type.test(i8* [[VT:%[^ ]*]], metadata !"?AUA@@")
136 // TC-ITANIUM: [[PAIR:%[^ ]*]] = call { i8*, i1 } @llvm.type.checked.load(i8* {{%[^ ]*}}, i32 0, metadata !"_ZTS1A")
137 // TC-MS: [[PAIR:%[^ ]*]] = call { i8*, i1 } @llvm.type.checked.load(i8* {{%[^ ]*}}, i32 0, metadata !"?AUA@@")
138 // CFI-VT: [[P:%[^ ]*]] = extractvalue { i8*, i1 } [[PAIR]], 1
139 // DIAG-NEXT: [[VTVALID0:%[^ ]*]] = call i1 @llvm.type.test(i8* [[VT]], metadata !"all-vtables")
140 // VTABLE-OPT: call void @llvm.assume(i1 [[P]])
141 // CFI-NEXT: br i1 [[P]], label %[[CONTBB:[^ ,]*]], label %[[TRAPBB:[^ ,]*]]
142 // CFI-NEXT: {{^$}}
143
144 // CFI: [[TRAPBB]]
145 // NDIAG-NEXT: call void @llvm.trap()
146 // NDIAG-NEXT: unreachable
147 // DIAG-NEXT: [[VTINT:%[^ ]*]] = ptrtoint i8* [[VT]] to i64
148 // DIAG-NEXT: [[VTVALID:%[^ ]*]] = zext i1 [[VTVALID0]] to i64
149 // DIAG-ABORT-NEXT: call void @__ubsan_handle_cfi_check_fail_abort(i8* getelementptr inbounds ({{.*}} @[[BADTYPESTATIC]], i32 0, i32 0), i64 [[VTINT]], i64 [[VTVALID]])
150 // DIAG-ABORT-NEXT: unreachable
151 // DIAG-RECOVER-NEXT: call void @__ubsan_handle_cfi_check_fail(i8* getelementptr inbounds ({{.*}} @[[BADTYPESTATIC]], i32 0, i32 0), i64 [[VTINT]], i64 [[VTVALID]])
152 // DIAG-RECOVER-NEXT: br label %[[CONTBB]]
153
154 // CFI: [[CONTBB]]
155 // CFI-NVT: [[PTR:%[^ ]*]] = load
156 // CFI-VT: [[PTRI8:%[^ ]*]] = extractvalue { i8*, i1 } [[PAIR]], 0
157 // CFI-VT: [[PTR:%[^ ]*]] = bitcast i8* [[PTRI8]] to
158 // CFI: call void [[PTR]]
159 #line 123
160 a->f();
161 }
162
163 // ITANIUM: define internal void @_Z3df1PN12_GLOBAL__N_11DE
164 // MS: define internal void @"?df1@@YAXPEAUD@?A0x{{[^@]*}}@@@Z"
df1(D * d)165 void df1(D *d) {
166 // TT-ITANIUM: {{%[^ ]*}} = call i1 @llvm.type.test(i8* {{%[^ ]*}}, metadata ![[DTYPE:[0-9]+]])
167 // TT-MS: {{%[^ ]*}} = call i1 @llvm.type.test(i8* {{%[^ ]*}}, metadata !"?AUA@@")
168 // TC-ITANIUM: {{%[^ ]*}} = call { i8*, i1 } @llvm.type.checked.load(i8* {{%[^ ]*}}, i32 0, metadata ![[DTYPE:[0-9]+]])
169 // TC-MS: {{%[^ ]*}} = call { i8*, i1 } @llvm.type.checked.load(i8* {{%[^ ]*}}, i32 0, metadata !"?AUA@@")
170 d->f();
171 }
172
173 // ITANIUM: define internal void @_Z3dg1PN12_GLOBAL__N_11DE
174 // MS: define internal void @"?dg1@@YAXPEAUD@?A0x{{[^@]*}}@@@Z"
dg1(D * d)175 void dg1(D *d) {
176 // TT-ITANIUM: {{%[^ ]*}} = call i1 @llvm.type.test(i8* {{%[^ ]*}}, metadata !"_ZTS1B")
177 // TT-MS: {{%[^ ]*}} = call i1 @llvm.type.test(i8* {{%[^ ]*}}, metadata !"?AUB@@")
178 // TC-ITANIUM: {{%[^ ]*}} = call { i8*, i1 } @llvm.type.checked.load(i8* {{%[^ ]*}}, i32 8, metadata !"_ZTS1B")
179 // TC-MS: {{%[^ ]*}} = call { i8*, i1 } @llvm.type.checked.load(i8* {{%[^ ]*}}, i32 0, metadata !"?AUB@@")
180 d->g();
181 }
182
183 // ITANIUM: define internal void @_Z3dh1PN12_GLOBAL__N_11DE
184 // MS: define internal void @"?dh1@@YAXPEAUD@?A0x{{[^@]*}}@@@Z"
dh1(D * d)185 void dh1(D *d) {
186 // TT-ITANIUM: {{%[^ ]*}} = call i1 @llvm.type.test(i8* {{%[^ ]*}}, metadata ![[DTYPE]])
187 // TT-MS: {{%[^ ]*}} = call i1 @llvm.type.test(i8* {{%[^ ]*}}, metadata ![[DTYPE:[0-9]+]])
188 // TC-ITANIUM: {{%[^ ]*}} = call { i8*, i1 } @llvm.type.checked.load(i8* {{%[^ ]*}}, i32 16, metadata ![[DTYPE]])
189 // TC-MS: {{%[^ ]*}} = call { i8*, i1 } @llvm.type.checked.load(i8* {{%[^ ]*}}, i32 8, metadata ![[DTYPE:[0-9]+]])
190 d->h();
191 }
192
193 // ITANIUM: define internal void @_Z3df2PN12_GLOBAL__N_11DE
194 // MS: define internal void @"?df2@@YAXPEAUD@?A0x{{[^@]*}}@@@Z"
195 __attribute__((no_sanitize("cfi")))
df2(D * d)196 void df2(D *d) {
197 // CFI-NVT-NOT: call i1 @llvm.type.test
198 // CFI-VT: [[P:%[^ ]*]] = call i1 @llvm.type.test
199 // CFI-VT: call void @llvm.assume(i1 [[P]])
200 d->f();
201 }
202
203 // ITANIUM: define internal void @_Z3df3PN12_GLOBAL__N_11DE
204 // MS: define internal void @"?df3@@YAXPEAUD@?A0x{{[^@]*}}@@@Z"
205 __attribute__((no_sanitize("address"))) __attribute__((no_sanitize("cfi-vcall")))
df3(D * d)206 void df3(D *d) {
207 // CFI-NVT-NOT: call i1 @llvm.type.test
208 // CFI-VT: [[P:%[^ ]*]] = call i1 @llvm.type.test
209 // CFI-VT: call void @llvm.assume(i1 [[P]])
210 d->f();
211 }
212
213 D d;
214
foo()215 void foo() {
216 df1(&d);
217 dg1(&d);
218 dh1(&d);
219 df2(&d);
220 df3(&d);
221
222 struct FA : A {
223 void f() {}
224 } fa;
225 af(&fa);
226 }
227
228 namespace test2 {
229
230 struct A {
231 virtual void m_fn1();
232 };
233 struct B {
234 virtual void m_fn2();
235 };
236 struct C : B, A {};
237 struct D : C {
238 void m_fn1();
239 };
240
241 // ITANIUM: define hidden void @_ZN5test21fEPNS_1DE
242 // MS: define dso_local void @"?f@test2@@YAXPEAUD@1@@Z"
f(D * d)243 void f(D *d) {
244 // TT-ITANIUM: {{%[^ ]*}} = call i1 @llvm.type.test(i8* {{%[^ ]*}}, metadata !"_ZTSN5test21DE")
245 // TT-MS: {{%[^ ]*}} = call i1 @llvm.type.test(i8* {{%[^ ]*}}, metadata !"?AUA@test2@@")
246 // TC-ITANIUM: {{%[^ ]*}} = call { i8*, i1 } @llvm.type.checked.load(i8* {{%[^ ]*}}, i32 8, metadata !"_ZTSN5test21DE")
247 // TC-MS: {{%[^ ]*}} = call { i8*, i1 } @llvm.type.checked.load(i8* {{%[^ ]*}}, i32 0, metadata !"?AUA@test2@@")
248 d->m_fn1();
249 }
250
251 }
252
253 // ITANIUM: [[A16]] = !{i64 16, !"_ZTS1A"}
254 // ITANIUM-DIAG: [[ALL16]] = !{i64 16, !"all-vtables"}
255 // ITANIUM: [[AF16]] = !{i64 16, !"_ZTSM1AFvvE.virtual"}
256 // ITANIUM: [[A32]] = !{i64 32, !"_ZTS1A"}
257 // ITANIUM-DIAG: [[ALL32]] = !{i64 32, !"all-vtables"}
258 // ITANIUM: [[AF32]] = !{i64 32, !"_ZTSM1AFvvE.virtual"}
259 // ITANIUM: [[AF40]] = !{i64 40, !"_ZTSM1AFvvE.virtual"}
260 // ITANIUM: [[AF48]] = !{i64 48, !"_ZTSM1AFvvE.virtual"}
261 // ITANIUM: [[B32]] = !{i64 32, !"_ZTS1B"}
262 // ITANIUM: [[BF32]] = !{i64 32, !"_ZTSM1BFvvE.virtual"}
263 // ITANIUM: [[BF40]] = !{i64 40, !"_ZTSM1BFvvE.virtual"}
264 // ITANIUM: [[BF48]] = !{i64 48, !"_ZTSM1BFvvE.virtual"}
265 // ITANIUM: [[C32]] = !{i64 32, !"_ZTS1C"}
266 // ITANIUM: [[CF32]] = !{i64 32, !"_ZTSM1CFvvE.virtual"}
267 // ITANIUM: [[C88]] = !{i64 88, !"_ZTS1C"}
268 // ITANIUM-DIAG: [[ALL88]] = !{i64 88, !"all-vtables"}
269 // ITANIUM: [[CF40]] = !{i64 40, !"_ZTSM1CFvvE.virtual"}
270 // ITANIUM: [[CF48]] = !{i64 48, !"_ZTSM1CFvvE.virtual"}
271 // ITANIUM: [[D32]] = !{i64 32, [[D_ID:![0-9]+]]}
272 // ITANIUM: [[D_ID]] = distinct !{}
273 // ITANIUM: [[DF32]] = !{i64 32, [[DF_ID:![0-9]+]]}
274 // ITANIUM: [[DF_ID]] = distinct !{}
275 // ITANIUM: [[DF40]] = !{i64 40, [[DF_ID]]}
276 // ITANIUM: [[DF48]] = !{i64 48, [[DF_ID]]}
277 // ITANIUM: [[A64]] = !{i64 64, !"_ZTS1A"}
278 // ITANIUM-DIAG: [[ALL64]] = !{i64 64, !"all-vtables"}
279 // ITANIUM: [[AF64]] = !{i64 64, !"_ZTSM1AFvvE.virtual"}
280 // ITANIUM: [[CF64]] = !{i64 64, !"_ZTSM1CFvvE.virtual"}
281 // ITANIUM: [[FA16]] = !{i64 16, [[FA_ID:![0-9]+]]}
282 // ITANIUM: [[FA_ID]] = distinct !{}
283 // ITANIUM: [[FAF16]] = !{i64 16, [[FAF_ID:![0-9]+]]}
284 // ITANIUM: [[FAF_ID]] = distinct !{}
285
286 // MS: [[A8]] = !{i64 8, !"?AUA@@"}
287 // MS: [[B8]] = !{i64 8, !"?AUB@@"}
288 // MS: [[D8]] = !{i64 8, [[D_ID:![0-9]+]]}
289 // MS: [[D_ID]] = distinct !{}
290 // MS: [[FA8]] = !{i64 8, [[FA_ID:![0-9]+]]}
291 // MS: [[FA_ID]] = distinct !{}
292