catch-undef-behavior.cpp revision 0e2c34f92f00628d48968dfea096d36381f494cb
1// RUN: %clang_cc1 -std=c++11 -fsanitize=signed-integer-overflow,integer-divide-by-zero,float-divide-by-zero,shift,unreachable,return,vla-bound,alignment,null,vptr,object-size,float-cast-overflow,bool,enum,array-bounds,function -fsanitize-recover=signed-integer-overflow,integer-divide-by-zero,float-divide-by-zero,shift,vla-bound,alignment,null,vptr,object-size,float-cast-overflow,bool,enum,array-bounds,function -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s 2// RUN: %clang_cc1 -std=c++11 -fsanitize=vptr,address -fsanitize-recover=vptr,address -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s --check-prefix=CHECK-ASAN 3// RUN: %clang_cc1 -std=c++11 -fsanitize=vptr -fsanitize-recover=vptr -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s --check-prefix=DOWNCAST-NULL 4// RUN: %clang_cc1 -std=c++11 -fsanitize=function -emit-llvm %s -o - -triple x86_64-linux-gnux32 | FileCheck %s --check-prefix=CHECK-X32 5// RUN: %clang_cc1 -std=c++11 -fsanitize=function -emit-llvm %s -o - -triple i386-linux-gnu | FileCheck %s --check-prefix=CHECK-X86 6 7struct S { 8 double d; 9 int a, b; 10 virtual int f(); 11}; 12 13// Check that type descriptor global is not modified by ASan. 14// CHECK-ASAN: [[TYPE_DESCR:@[0-9]+]] = private unnamed_addr constant { i16, i16, [4 x i8] } { i16 -1, i16 0, [4 x i8] c"'S'\00" } 15 16// Check that type mismatch handler is not modified by ASan. 17// CHECK-ASAN: private unnamed_addr global { { [{{.*}} x i8]*, i32, i32 }, { i16, i16, [4 x i8] }*, i8*, i8 } { {{.*}}, { i16, i16, [4 x i8] }* [[TYPE_DESCR]], {{.*}} } 18 19struct T : S {}; 20 21// CHECK-LABEL: @_Z17reference_binding 22void reference_binding(int *p, S *q) { 23 // C++ core issue 453: If an lvalue to which a reference is directly bound 24 // designates neither an existing object or function of an appropriate type, 25 // nor a region of storage of suitable size and alignment to contain an object 26 // of the reference's type, the behavior is undefined. 27 28 // CHECK: icmp ne {{.*}}, null 29 30 // CHECK: %[[SIZE:.*]] = call i64 @llvm.objectsize.i64 31 // CHECK-NEXT: icmp uge i64 %[[SIZE]], 4 32 33 // CHECK: %[[PTRINT:.*]] = ptrtoint 34 // CHECK-NEXT: %[[MISALIGN:.*]] = and i64 %[[PTRINT]], 3 35 // CHECK-NEXT: icmp eq i64 %[[MISALIGN]], 0 36 int &r = *p; 37 38 // A reference is not required to refer to an object within its lifetime. 39 // CHECK-NOT: __ubsan_handle_dynamic_type_cache_miss 40 S &r2 = *q; 41} 42 43// CHECK-LABEL: @_Z13member_access 44// CHECK-ASAN-LABEL: @_Z13member_access 45void member_access(S *p) { 46 // (1a) Check 'p' is appropriately sized and aligned for member access. 47 48 // CHECK: icmp ne {{.*}}, null 49 50 // CHECK: %[[SIZE:.*]] = call i64 @llvm.objectsize.i64 51 // CHECK-NEXT: icmp uge i64 %[[SIZE]], 24 52 53 // CHECK: %[[PTRINT:.*]] = ptrtoint 54 // CHECK-NEXT: %[[MISALIGN:.*]] = and i64 %[[PTRINT]], 7 55 // CHECK-NEXT: icmp eq i64 %[[MISALIGN]], 0 56 57 // (1b) Check that 'p' actually points to an 'S'. 58 59 // CHECK: %[[VPTRADDR:.*]] = bitcast {{.*}} to i64* 60 // CHECK-NEXT: %[[VPTR:.*]] = load i64* %[[VPTRADDR]] 61 // 62 // hash_16_bytes: 63 // 64 // If this number changes, it indicates that either the mangled name of ::S 65 // has changed, or that LLVM's hashing function has changed. The latter case 66 // is OK if the hashing function is still stable. 67 // 68 // The two hash values are for 64- and 32-bit Clang binaries, respectively. 69 // FIXME: We should produce a 64-bit value either way. 70 // 71 // CHECK-NEXT: xor i64 {{-4030275160588942838|2562089159}}, %[[VPTR]] 72 // CHECK-NEXT: mul i64 {{.*}}, -7070675565921424023 73 // CHECK-NEXT: lshr i64 {{.*}}, 47 74 // CHECK-NEXT: xor i64 75 // CHECK-NEXT: xor i64 %[[VPTR]] 76 // CHECK-NEXT: mul i64 {{.*}}, -7070675565921424023 77 // CHECK-NEXT: lshr i64 {{.*}}, 47 78 // CHECK-NEXT: xor i64 79 // CHECK-NEXT: %[[HASH:.*]] = mul i64 {{.*}}, -7070675565921424023 80 // 81 // Check the hash against the table: 82 // 83 // CHECK-NEXT: %[[IDX:.*]] = and i64 %{{.*}}, 127 84 // CHECK-NEXT: getelementptr inbounds [128 x i64]* @__ubsan_vptr_type_cache, i32 0, i64 %[[IDX]] 85 // CHECK-NEXT: %[[CACHEVAL:.*]] = load i64* 86 // CHECK-NEXT: icmp eq i64 %[[CACHEVAL]], %[[HASH]] 87 // CHECK-NEXT: br i1 88 89 // CHECK: call void @__ubsan_handle_dynamic_type_cache_miss({{.*}}, i64 %{{.*}}, i64 %[[HASH]]) 90 // CHECK-NOT: unreachable 91 // CHECK: {{.*}}: 92 93 // (2) Check 'p->b' is appropriately sized and aligned for a load. 94 95 // FIXME: Suppress this in the trivial case of a member access, because we 96 // know we've just checked the member access expression itself. 97 98 // CHECK: %[[SIZE:.*]] = call i64 @llvm.objectsize.i64 99 // CHECK-NEXT: icmp uge i64 %[[SIZE]], 4 100 101 // CHECK: %[[PTRINT:.*]] = ptrtoint 102 // CHECK-NEXT: %[[MISALIGN:.*]] = and i64 %[[PTRINT]], 3 103 // CHECK-NEXT: icmp eq i64 %[[MISALIGN]], 0 104 int k = p->b; 105 106 // (3a) Check 'p' is appropriately sized and aligned for member function call. 107 108 // CHECK: icmp ne {{.*}}, null 109 110 // CHECK: %[[SIZE:.*]] = call i64 @llvm.objectsize.i64 111 // CHECK-NEXT: icmp uge i64 %[[SIZE]], 24 112 113 // CHECK: %[[PTRINT:.*]] = ptrtoint 114 // CHECK-NEXT: %[[MISALIGN:.*]] = and i64 %[[PTRINT]], 7 115 // CHECK-NEXT: icmp eq i64 %[[MISALIGN]], 0 116 117 // (3b) Check that 'p' actually points to an 'S' 118 119 // CHECK: load i64* 120 // CHECK-NEXT: xor i64 {{-4030275160588942838|2562089159}}, 121 // [...] 122 // CHECK: getelementptr inbounds [128 x i64]* @__ubsan_vptr_type_cache, i32 0, i64 % 123 // CHECK: br i1 124 // CHECK: call void @__ubsan_handle_dynamic_type_cache_miss({{.*}}, i64 %{{.*}}, i64 %{{.*}}) 125 // CHECK-NOT: unreachable 126 // CHECK: {{.*}}: 127 128 k = p->f(); 129} 130 131// CHECK-LABEL: @_Z12lsh_overflow 132int lsh_overflow(int a, int b) { 133 // CHECK: %[[INBOUNDS:.*]] = icmp ule i32 %[[RHS:.*]], 31 134 // CHECK-NEXT: br i1 %[[INBOUNDS]] 135 136 // CHECK: %[[SHIFTED_OUT_WIDTH:.*]] = sub nuw nsw i32 31, %[[RHS]] 137 // CHECK-NEXT: %[[SHIFTED_OUT:.*]] = lshr i32 %[[LHS:.*]], %[[SHIFTED_OUT_WIDTH]] 138 139 // This is present for C++11 but not for C: C++ core issue 1457 allows a '1' 140 // to be shifted into the sign bit, but not out of it. 141 // CHECK-NEXT: %[[SHIFTED_OUT_NOT_SIGN:.*]] = lshr i32 %[[SHIFTED_OUT]], 1 142 143 // CHECK-NEXT: %[[NO_OVERFLOW:.*]] = icmp eq i32 %[[SHIFTED_OUT_NOT_SIGN]], 0 144 145 // CHECK: %[[VALID:.*]] = phi i1 [ %[[INBOUNDS]], {{.*}} ], [ %[[NO_OVERFLOW]], {{.*}} ] 146 // CHECK-NEXT: br i1 %[[VALID]] 147 148 // CHECK: call void @__ubsan_handle_shift_out_of_bounds 149 // CHECK-NOT: call void @__ubsan_handle_shift_out_of_bounds 150 151 // CHECK: %[[RET:.*]] = shl i32 %[[LHS]], %[[RHS]] 152 // CHECK-NEXT: ret i32 %[[RET]] 153 return a << b; 154} 155 156// CHECK-LABEL: @_Z9no_return 157int no_return() { 158 // CHECK: call void @__ubsan_handle_missing_return(i8* bitcast ({{.*}}* @{{.*}} to i8*)) [[NR_NUW:#[0-9]+]] 159 // CHECK-NEXT: unreachable 160} 161 162// CHECK-LABEL: @_Z9sour_bool 163bool sour_bool(bool *p) { 164 // CHECK: %[[OK:.*]] = icmp ule i8 {{.*}}, 1 165 // CHECK: br i1 %[[OK]] 166 // CHECK: call void @__ubsan_handle_load_invalid_value(i8* bitcast ({{.*}}), i64 {{.*}}) 167 return *p; 168} 169 170enum E1 { e1a = 0, e1b = 127 } e1; 171enum E2 { e2a = -1, e2b = 64 } e2; 172enum E3 { e3a = (1u << 31) - 1 } e3; 173 174// CHECK-LABEL: @_Z14bad_enum_value 175int bad_enum_value() { 176 // CHECK: %[[E1:.*]] = icmp ule i32 {{.*}}, 127 177 // CHECK: br i1 %[[E1]] 178 // CHECK: call void @__ubsan_handle_load_invalid_value( 179 int a = e1; 180 181 // CHECK: %[[E2HI:.*]] = icmp sle i32 {{.*}}, 127 182 // CHECK: %[[E2LO:.*]] = icmp sge i32 {{.*}}, -128 183 // CHECK: %[[E2:.*]] = and i1 %[[E2HI]], %[[E2LO]] 184 // CHECK: br i1 %[[E2]] 185 // CHECK: call void @__ubsan_handle_load_invalid_value( 186 int b = e2; 187 188 // CHECK: %[[E3:.*]] = icmp ule i32 {{.*}}, 2147483647 189 // CHECK: br i1 %[[E3]] 190 // CHECK: call void @__ubsan_handle_load_invalid_value( 191 int c = e3; 192 return a + b + c; 193} 194 195// CHECK-LABEL: @_Z20bad_downcast_pointer 196// DOWNCAST-NULL-LABEL: @_Z20bad_downcast_pointer 197void bad_downcast_pointer(S *p) { 198 // CHECK: %[[NONNULL:.*]] = icmp ne {{.*}}, null 199 // CHECK: br i1 %[[NONNULL]], 200 201 // A null poiner access is guarded without -fsanitize=null. 202 // DOWNCAST-NULL: %[[NONNULL:.*]] = icmp ne {{.*}}, null 203 // DOWNCAST-NULL: br i1 %[[NONNULL]], 204 205 // CHECK: %[[SIZE:.*]] = call i64 @llvm.objectsize.i64.p0i8( 206 // CHECK: %[[E1:.*]] = icmp uge i64 %[[SIZE]], 24 207 // CHECK: %[[MISALIGN:.*]] = and i64 %{{.*}}, 7 208 // CHECK: %[[E2:.*]] = icmp eq i64 %[[MISALIGN]], 0 209 // CHECK: %[[E12:.*]] = and i1 %[[E1]], %[[E2]] 210 // CHECK: br i1 %[[E12]], 211 212 // CHECK: call void @__ubsan_handle_type_mismatch 213 // CHECK: br label 214 215 // CHECK: br i1 %{{.*}}, 216 217 // CHECK: call void @__ubsan_handle_dynamic_type_cache_miss 218 // CHECK: br label 219 (void) static_cast<T*>(p); 220} 221 222// CHECK-LABEL: @_Z22bad_downcast_reference 223void bad_downcast_reference(S &p) { 224 // CHECK: %[[E1:.*]] = icmp ne {{.*}}, null 225 // CHECK-NOT: br i1 226 227 // CHECK: %[[SIZE:.*]] = call i64 @llvm.objectsize.i64.p0i8( 228 // CHECK: %[[E2:.*]] = icmp uge i64 %[[SIZE]], 24 229 230 // CHECK: %[[MISALIGN:.*]] = and i64 %{{.*}}, 7 231 // CHECK: %[[E3:.*]] = icmp eq i64 %[[MISALIGN]], 0 232 233 // CHECK: %[[E12:.*]] = and i1 %[[E1]], %[[E2]] 234 // CHECK: %[[E123:.*]] = and i1 %[[E12]], %[[E3]] 235 // CHECK: br i1 %[[E123]], 236 237 // CHECK: call void @__ubsan_handle_type_mismatch 238 // CHECK: br label 239 240 // CHECK: br i1 %{{.*}}, 241 242 // CHECK: call void @__ubsan_handle_dynamic_type_cache_miss 243 // CHECK: br label 244 (void) static_cast<T&>(p); 245} 246 247// CHECK-LABEL: @_Z11array_index 248int array_index(const int (&a)[4], int n) { 249 // CHECK: %[[K1_OK:.*]] = icmp ult i64 %{{.*}}, 4 250 // CHECK: br i1 %[[K1_OK]] 251 // CHECK: call void @__ubsan_handle_out_of_bounds( 252 int k1 = a[n]; 253 254 // CHECK: %[[R1_OK:.*]] = icmp ule i64 %{{.*}}, 4 255 // CHECK: br i1 %[[R1_OK]] 256 // CHECK: call void @__ubsan_handle_out_of_bounds( 257 const int *r1 = &a[n]; 258 259 // CHECK: %[[K2_OK:.*]] = icmp ult i64 %{{.*}}, 8 260 // CHECK: br i1 %[[K2_OK]] 261 // CHECK: call void @__ubsan_handle_out_of_bounds( 262 int k2 = ((const int(&)[8])a)[n]; 263 264 // CHECK: %[[K3_OK:.*]] = icmp ult i64 %{{.*}}, 4 265 // CHECK: br i1 %[[K3_OK]] 266 // CHECK: call void @__ubsan_handle_out_of_bounds( 267 int k3 = n[a]; 268 269 return k1 + *r1 + k2; 270} 271 272// CHECK-LABEL: @_Z17multi_array_index 273int multi_array_index(int n, int m) { 274 int arr[4][6]; 275 276 // CHECK: %[[IDX2_OK:.*]] = icmp ult i64 %{{.*}}, 6 277 // CHECK: br i1 %[[IDX2_OK]] 278 // CHECK: call void @__ubsan_handle_out_of_bounds( 279 280 // CHECK: %[[IDX1_OK:.*]] = icmp ult i64 %{{.*}}, 4 281 // CHECK: br i1 %[[IDX1_OK]] 282 // CHECK: call void @__ubsan_handle_out_of_bounds( 283 return arr[n][m]; 284} 285 286// CHECK-LABEL: @_Z11array_arith 287int array_arith(const int (&a)[4], int n) { 288 // CHECK: %[[K1_OK:.*]] = icmp ule i64 %{{.*}}, 4 289 // CHECK: br i1 %[[K1_OK]] 290 // CHECK: call void @__ubsan_handle_out_of_bounds( 291 const int *k1 = a + n; 292 293 // CHECK: %[[K2_OK:.*]] = icmp ule i64 %{{.*}}, 8 294 // CHECK: br i1 %[[K2_OK]] 295 // CHECK: call void @__ubsan_handle_out_of_bounds( 296 const int *k2 = (const int(&)[8])a + n; 297 298 return *k1 + *k2; 299} 300 301struct ArrayMembers { 302 int a1[5]; 303 int a2[1]; 304}; 305// CHECK-LABEL: @_Z18struct_array_index 306int struct_array_index(ArrayMembers *p, int n) { 307 // CHECK: %[[IDX_OK:.*]] = icmp ult i64 %{{.*}}, 5 308 // CHECK: br i1 %[[IDX_OK]] 309 // CHECK: call void @__ubsan_handle_out_of_bounds( 310 return p->a1[n]; 311} 312 313// CHECK-LABEL: @_Z16flex_array_index 314int flex_array_index(ArrayMembers *p, int n) { 315 // CHECK-NOT: call void @__ubsan_handle_out_of_bounds( 316 return p->a2[n]; 317} 318 319extern int incomplete[]; 320// CHECK-LABEL: @_Z22incomplete_array_index 321int incomplete_array_index(int n) { 322 // CHECK-NOT: call void @__ubsan_handle_out_of_bounds( 323 return incomplete[n]; 324} 325 326typedef __attribute__((ext_vector_type(4))) int V4I; 327// CHECK-LABEL: @_Z12vector_index 328int vector_index(V4I v, int n) { 329 // CHECK: %[[IDX_OK:.*]] = icmp ult i64 %{{.*}}, 4 330 // CHECK: br i1 %[[IDX_OK]] 331 // CHECK: call void @__ubsan_handle_out_of_bounds( 332 return v[n]; 333} 334 335// CHECK-LABEL: @_Z12string_index 336char string_index(int n) { 337 // CHECK: %[[IDX_OK:.*]] = icmp ult i64 %{{.*}}, 6 338 // CHECK: br i1 %[[IDX_OK]] 339 // CHECK: call void @__ubsan_handle_out_of_bounds( 340 return "Hello"[n]; 341} 342 343class A // align=4 344{ 345 int a1, a2, a3; 346}; 347 348class B // align=8 349{ 350 long b1, b2; 351}; 352 353class C : public A, public B // align=16 354{ 355 alignas(16) int c1; 356}; 357 358// Make sure we check the alignment of the pointer after subtracting any 359// offset. The pointer before subtraction doesn't need to be aligned for 360// the destination type. 361 362// CHECK-LABEL: define void @_Z16downcast_pointerP1B(%class.B* %b) 363void downcast_pointer(B *b) { 364 (void) static_cast<C*>(b); 365 // Alignment check from EmitTypeCheck(TCK_DowncastPointer, ...) 366 // CHECK: [[SUB:%[.a-z0-9]*]] = getelementptr i8* {{.*}}, i64 -16 367 // CHECK-NEXT: [[C:%[0-9]*]] = bitcast i8* [[SUB]] to %class.C* 368 // null check goes here 369 // CHECK: [[FROM_PHI:%[0-9]*]] = phi %class.C* [ [[C]], {{.*}} ], {{.*}} 370 // Objectsize check goes here 371 // CHECK: [[C_INT:%[0-9]*]] = ptrtoint %class.C* [[FROM_PHI]] to i64 372 // CHECK-NEXT: [[MASKED:%[0-9]*]] = and i64 [[C_INT]], 15 373 // CHECK-NEXT: [[TEST:%[0-9]*]] = icmp eq i64 [[MASKED]], 0 374 // AND the alignment test with the objectsize test. 375 // CHECK-NEXT: [[AND:%[0-9]*]] = and i1 {{.*}}, [[TEST]] 376 // CHECK-NEXT: br i1 [[AND]] 377} 378 379// CHECK-LABEL: define void @_Z18downcast_referenceR1B(%class.B* dereferenceable({{[0-9]+}}) %b) 380void downcast_reference(B &b) { 381 (void) static_cast<C&>(b); 382 // Alignment check from EmitTypeCheck(TCK_DowncastReference, ...) 383 // CHECK: [[SUB:%[.a-z0-9]*]] = getelementptr i8* {{.*}}, i64 -16 384 // CHECK-NEXT: [[C:%[0-9]*]] = bitcast i8* [[SUB]] to %class.C* 385 // Objectsize check goes here 386 // CHECK: [[C_INT:%[0-9]*]] = ptrtoint %class.C* [[C]] to i64 387 // CHECK-NEXT: [[MASKED:%[0-9]*]] = and i64 [[C_INT]], 15 388 // CHECK-NEXT: [[TEST:%[0-9]*]] = icmp eq i64 [[MASKED]], 0 389 // AND the alignment test with the objectsize test. 390 // CHECK: [[AND:%[0-9]*]] = and i1 {{.*}}, [[TEST]] 391 // CHECK-NEXT: br i1 [[AND]] 392} 393 394// CHECK-LABEL: @_Z22indirect_function_callPFviE({{.*}} prologue <{ i32, i8* }> <{ i32 1413876459, i8* bitcast ({ i8*, i8* }* @_ZTIFvPFviEE to i8*) }> 395// CHECK-X32: @_Z22indirect_function_callPFviE({{.*}} prologue <{ i32, i8* }> <{ i32 1413875435, i8* bitcast ({ i8*, i8* }* @_ZTIFvPFviEE to i8*) }> 396// CHECK-X86: @_Z22indirect_function_callPFviE({{.*}} prologue <{ i32, i8* }> <{ i32 1413875435, i8* bitcast ({ i8*, i8* }* @_ZTIFvPFviEE to i8*) }> 397void indirect_function_call(void (*p)(int)) { 398 // CHECK: [[PTR:%[0-9]*]] = bitcast void (i32)* {{.*}} to <{ i32, i8* }>* 399 400 // Signature check 401 // CHECK-NEXT: [[SIGPTR:%[0-9]*]] = getelementptr <{ i32, i8* }>* [[PTR]], i32 0, i32 0 402 // CHECK-NEXT: [[SIG:%[0-9]*]] = load i32* [[SIGPTR]] 403 // CHECK-NEXT: [[SIGCMP:%[0-9]*]] = icmp eq i32 [[SIG]], 1413876459 404 // CHECK-NEXT: br i1 [[SIGCMP]] 405 406 // RTTI pointer check 407 // CHECK: [[RTTIPTR:%[0-9]*]] = getelementptr <{ i32, i8* }>* [[PTR]], i32 0, i32 1 408 // CHECK-NEXT: [[RTTI:%[0-9]*]] = load i8** [[RTTIPTR]] 409 // CHECK-NEXT: [[RTTICMP:%[0-9]*]] = icmp eq i8* [[RTTI]], bitcast ({ i8*, i8* }* @_ZTIFviE to i8*) 410 // CHECK-NEXT: br i1 [[RTTICMP]] 411 p(42); 412} 413 414namespace UpcastPointerTest { 415struct S {}; 416struct T : S { double d; }; 417struct V : virtual S {}; 418 419// CHECK-LABEL: upcast_pointer 420S* upcast_pointer(T* t) { 421 // Check for null pointer 422 // CHECK: %[[NONNULL:.*]] = icmp ne {{.*}}, null 423 // CHECK: br i1 %[[NONNULL]] 424 425 // Check alignment 426 // CHECK: %[[MISALIGN:.*]] = and i64 %{{.*}}, 7 427 // CHECK: icmp eq i64 %[[MISALIGN]], 0 428 429 // CHECK: call void @__ubsan_handle_type_mismatch 430 return t; 431} 432 433V getV(); 434 435// CHECK-LABEL: upcast_to_vbase 436void upcast_to_vbase() { 437 // No need to check for null here, as we have a temporary here. 438 439 // CHECK-NOT: br i1 440 441 // CHECK: call i64 @llvm.objectsize 442 // CHECK: call void @__ubsan_handle_type_mismatch 443 // CHECK: call void @__ubsan_handle_dynamic_type_cache_miss 444 const S& s = getV(); 445} 446} 447 448namespace CopyValueRepresentation { 449 // CHECK-LABEL: define {{.*}} @_ZN23CopyValueRepresentation2S3aSERKS0_ 450 // CHECK-NOT: call {{.*}} @__ubsan_handle_load_invalid_value 451 // CHECK-LABEL: define {{.*}} @_ZN23CopyValueRepresentation2S4aSEOS0_ 452 // CHECK-NOT: call {{.*}} @__ubsan_handle_load_invalid_value 453 // CHECK-LABEL: define {{.*}} @_ZN23CopyValueRepresentation2S1C2ERKS0_ 454 // CHECK-NOT: call {{.*}} __ubsan_handle_load_invalid_value 455 // CHECK-LABEL: define {{.*}} @_ZN23CopyValueRepresentation2S2C2ERKS0_ 456 // CHECK: __ubsan_handle_load_invalid_value 457 // CHECK-LABEL: define {{.*}} @_ZN23CopyValueRepresentation2S5C2ERKS0_ 458 // CHECK-NOT: call {{.*}} __ubsan_handle_load_invalid_value 459 460 struct CustomCopy { CustomCopy(); CustomCopy(const CustomCopy&); }; 461 struct S1 { 462 CustomCopy CC; 463 bool b; 464 }; 465 void callee1(S1); 466 void test1() { 467 S1 s11; 468 callee1(s11); 469 S1 s12; 470 s12 = s11; 471 } 472 473 static bool some_global_bool; 474 struct ExprCopy { 475 ExprCopy(); 476 ExprCopy(const ExprCopy&, bool b = some_global_bool); 477 }; 478 struct S2 { 479 ExprCopy EC; 480 bool b; 481 }; 482 void callee2(S2); 483 void test2(void) { 484 S2 s21; 485 callee2(s21); 486 S2 s22; 487 s22 = s21; 488 } 489 490 struct CustomAssign { CustomAssign &operator=(const CustomAssign&); }; 491 struct S3 { 492 CustomAssign CA; 493 bool b; 494 }; 495 void test3() { 496 S3 x, y; 497 x = y; 498 } 499 500 struct CustomMove { 501 CustomMove(); 502 CustomMove(const CustomMove&&); 503 CustomMove &operator=(const CustomMove&&); 504 }; 505 struct S4 { 506 CustomMove CM; 507 bool b; 508 }; 509 void test4() { 510 S4 x, y; 511 x = static_cast<S4&&>(y); 512 } 513 514 struct EnumCustomCopy { 515 EnumCustomCopy(); 516 EnumCustomCopy(const EnumCustomCopy&); 517 }; 518 struct S5 { 519 EnumCustomCopy ECC; 520 bool b; 521 }; 522 void callee5(S5); 523 void test5() { 524 S5 s51; 525 callee5(s51); 526 S5 s52; 527 s52 = s51; 528 } 529} 530 531// CHECK: attributes [[NR_NUW]] = { noreturn nounwind } 532