1 // RUN: %clang_cc1 -fsanitize=alignment,null,object-size,shift-base,shift-exponent,return,signed-integer-overflow,vla-bound,float-cast-overflow,integer-divide-by-zero,bool,returns-nonnull-attribute,nonnull-attribute -fsanitize-recover=alignment,null,object-size,shift-base,shift-exponent,signed-integer-overflow,vla-bound,float-cast-overflow,integer-divide-by-zero,bool,returns-nonnull-attribute,nonnull-attribute -emit-llvm %s -o - -triple x86_64-linux-gnu | opt -instnamer -S | FileCheck %s --check-prefix=CHECK-COMMON --check-prefix=CHECK-UBSAN 2 // RUN: %clang_cc1 -fsanitize-trap=alignment,null,object-size,shift-base,shift-exponent,return,signed-integer-overflow,vla-bound,float-cast-overflow,integer-divide-by-zero,bool,returns-nonnull-attribute,nonnull-attribute -fsanitize-recover=alignment,null,object-size,shift-base,shift-exponent,signed-integer-overflow,vla-bound,float-cast-overflow,integer-divide-by-zero,bool,returns-nonnull-attribute,nonnull-attribute -fsanitize=alignment,null,object-size,shift-base,shift-exponent,return,signed-integer-overflow,vla-bound,float-cast-overflow,integer-divide-by-zero,bool,returns-nonnull-attribute,nonnull-attribute -fsanitize-recover=alignment,null,object-size,shift-base,shift-exponent,signed-integer-overflow,vla-bound,float-cast-overflow,integer-divide-by-zero,bool,returns-nonnull-attribute,nonnull-attribute -emit-llvm %s -o - -triple x86_64-linux-gnu | opt -instnamer -S | FileCheck %s --check-prefix=CHECK-COMMON --check-prefix=CHECK-TRAP 3 // RUN: %clang_cc1 -fsanitize=signed-integer-overflow -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s --check-prefix=CHECK-OVERFLOW 4 5 // CHECK-UBSAN: @[[INT:.*]] = private unnamed_addr constant { i16, i16, [6 x i8] } { i16 0, i16 11, [6 x i8] c"'int'\00" } 6 7 // FIXME: When we only emit each type once, use [[INT]] more below. 8 // CHECK-UBSAN: @[[LINE_100:.*]] = private unnamed_addr global {{.*}}, i32 100, i32 5 {{.*}} @[[INT]], i8 2, i8 1 9 // CHECK-UBSAN: @[[LINE_200:.*]] = {{.*}}, i32 200, i32 10 {{.*}}, i8 2, i8 0 10 // CHECK-UBSAN: @[[LINE_300:.*]] = {{.*}}, i32 300, i32 12 {{.*}} @{{.*}}, {{.*}} @{{.*}} 11 // CHECK-UBSAN: @[[LINE_400:.*]] = {{.*}}, i32 400, i32 12 {{.*}} @{{.*}}, {{.*}} @{{.*}} 12 // CHECK-UBSAN: @[[LINE_500:.*]] = {{.*}}, i32 500, i32 10 {{.*}} @{{.*}}, i8 2, i8 0 } 13 // CHECK-UBSAN: @[[LINE_600:.*]] = {{.*}}, i32 600, i32 3 {{.*}} @{{.*}}, i8 2, i8 1 } 14 15 // CHECK-UBSAN: @[[STRUCT_S:.*]] = private unnamed_addr constant { i16, i16, [11 x i8] } { i16 -1, i16 0, [11 x i8] c"'struct S'\00" } 16 17 // CHECK-UBSAN: @[[LINE_700:.*]] = {{.*}}, i32 700, i32 14 {{.*}} @[[STRUCT_S]], i8 2, i8 3 } 18 // CHECK-UBSAN: @[[LINE_800:.*]] = {{.*}}, i32 800, i32 12 {{.*}} @{{.*}} } 19 // CHECK-UBSAN: @[[LINE_900:.*]] = {{.*}}, i32 900, i32 11 {{.*}} @{{.*}} } 20 // CHECK-UBSAN: @[[LINE_1000:.*]] = {{.*}}, i32 1000, i32 11 {{.*}} @{{.*}} } 21 // CHECK-UBSAN: @[[FP16:.*]] = private unnamed_addr constant { i16, i16, [9 x i8] } { i16 1, i16 16, [9 x i8] c"'__fp16'\00" } 22 // CHECK-UBSAN: @[[LINE_1200:.*]] = {{.*}}, i32 1200, i32 10 {{.*}} @{{.*}} } 23 // CHECK-UBSAN: @[[LINE_1300:.*]] = {{.*}}, i32 1300, i32 10 {{.*}} @{{.*}} } 24 // CHECK-UBSAN: @[[LINE_1400:.*]] = {{.*}}, i32 1400, i32 10 {{.*}} @{{.*}} } 25 // Make sure we check the fp16 type_mismatch data so we can easily match the signed char float_cast_overflow 26 // CHECK-UBSAN: @[[LINE_1500:.*]] = {{.*}}, i32 1500, i32 10 {{.*}} @[[FP16]], {{.*}} } 27 // CHECK-UBSAN: @[[SCHAR:.*]] = private unnamed_addr constant { i16, i16, [14 x i8] } { i16 0, i16 7, [14 x i8] c"'signed char'\00" } 28 // CHECK-UBSAN: @[[LINE_1500:.*]] = {{.*}}, i32 1500, i32 10 {{.*}} @[[FP16]], {{.*}} } 29 30 // PR6805 31 // CHECK-COMMON-LABEL: @foo 32 void foo(void) { 33 union { int i; } u; 34 35 // CHECK-COMMON: %[[I8PTR:.*]] = bitcast i32* %[[PTR:.*]] to i8* 36 // CHECK-COMMON-NEXT: %[[SIZE:.*]] = call i64 @llvm.objectsize.i64.p0i8(i8* %[[I8PTR]], i1 false, i1 false, i1 false) 37 // CHECK-COMMON-NEXT: %[[OK:.*]] = icmp uge i64 %[[SIZE]], 4 38 39 // CHECK-UBSAN: br i1 %[[OK]], {{.*}} !prof ![[WEIGHT_MD:.*]], !nosanitize 40 // CHECK-TRAP: br i1 %[[OK]], {{.*}} 41 42 // CHECK-UBSAN: %[[ARG:.*]] = ptrtoint {{.*}} %[[PTR]] to i64 43 // CHECK-UBSAN-NEXT: call void @__ubsan_handle_type_mismatch_v1(i8* bitcast ({{.*}} @[[LINE_100]] to i8*), i64 %[[ARG]]) 44 45 // CHECK-TRAP: call void @llvm.ubsantrap(i8 22) [[NR_NUW:#[0-9]+]] 46 // CHECK-TRAP-NEXT: unreachable 47 #line 100 48 u.i=1; 49 } 50 51 // CHECK-COMMON-LABEL: @bar 52 int bar(int *a) { 53 // CHECK-COMMON: %[[SIZE:.*]] = call i64 @llvm.objectsize.i64 54 // CHECK-COMMON-NEXT: icmp uge i64 %[[SIZE]], 4 55 56 // CHECK-COMMON: %[[PTRINT:.*]] = ptrtoint 57 // CHECK-COMMON-NEXT: %[[MISALIGN:.*]] = and i64 %[[PTRINT]], 3 58 // CHECK-COMMON-NEXT: icmp eq i64 %[[MISALIGN]], 0 59 60 // CHECK-UBSAN: call void @__ubsan_handle_type_mismatch_v1(i8* bitcast ({{.*}} @[[LINE_200]] to i8*), i64 %[[PTRINT]]) 61 62 // CHECK-TRAP: call void @llvm.ubsantrap(i8 22) [[NR_NUW]] 63 // CHECK-TRAP-NEXT: unreachable 64 65 #line 200 66 return *a; 67 } 68 69 // CHECK-UBSAN-LABEL: @addr_space 70 int addr_space(int __attribute__((address_space(256))) *a) { 71 // CHECK-UBSAN-NOT: __ubsan 72 return *a; 73 } 74 75 // CHECK-COMMON-LABEL: @lsh_overflow 76 int lsh_overflow(int a, int b) { 77 // CHECK-COMMON: %[[RHS_INBOUNDS:.*]] = icmp ule i32 %[[RHS:.*]], 31 78 // CHECK-COMMON-NEXT: br i1 %[[RHS_INBOUNDS]], label %[[CHECK_BB:.*]], label %[[CONT_BB:.*]], 79 80 // CHECK-COMMON: [[CHECK_BB]]: 81 // CHECK-COMMON-NEXT: %[[SHIFTED_OUT_WIDTH:.*]] = sub nuw nsw i32 31, %[[RHS]] 82 // CHECK-COMMON-NEXT: %[[SHIFTED_OUT:.*]] = lshr i32 %[[LHS:.*]], %[[SHIFTED_OUT_WIDTH]] 83 // CHECK-COMMON-NEXT: %[[NO_OVERFLOW:.*]] = icmp eq i32 %[[SHIFTED_OUT]], 0 84 // CHECK-COMMON-NEXT: br label %[[CONT_BB]] 85 86 // CHECK-COMMON: [[CONT_BB]]: 87 // CHECK-COMMON-NEXT: %[[VALID_BASE:.*]] = phi i1 [ true, {{.*}} ], [ %[[NO_OVERFLOW]], %[[CHECK_BB]] ] 88 // CHECK-COMMON-NEXT: %[[VALID:.*]] = and i1 %[[RHS_INBOUNDS]], %[[VALID_BASE]] 89 90 // CHECK-UBSAN: br i1 %[[VALID]], {{.*}} !prof ![[WEIGHT_MD]] 91 // CHECK-TRAP: br i1 %[[VALID]] 92 93 // CHECK-UBSAN: %[[ARG1:.*]] = zext 94 // CHECK-UBSAN-NEXT: %[[ARG2:.*]] = zext 95 // CHECK-UBSAN-NEXT: call void @__ubsan_handle_shift_out_of_bounds(i8* bitcast ({{.*}} @[[LINE_300]] to i8*), i64 %[[ARG1]], i64 %[[ARG2]]) 96 // CHECK-UBSAN-NOT: call void @__ubsan_handle_shift_out_of_bounds 97 98 // CHECK-TRAP: call void @llvm.ubsantrap(i8 20) [[NR_NUW]] 99 // CHECK-TRAP: unreachable 100 // CHECK-TRAP-NOT: call void @llvm.ubsantrap 101 102 // CHECK-COMMON: %[[RET:.*]] = shl i32 %[[LHS]], %[[RHS]] 103 // CHECK-COMMON-NEXT: ret i32 %[[RET]] 104 #line 300 105 return a << b; 106 } 107 108 // CHECK-COMMON-LABEL: @rsh_inbounds 109 int rsh_inbounds(int a, int b) { 110 // CHECK-COMMON: %[[INBOUNDS:.*]] = icmp ule i32 %[[RHS:.*]], 31 111 // CHECK-COMMON: br i1 %[[INBOUNDS]] 112 113 // CHECK-UBSAN: %[[ARG1:.*]] = zext 114 // CHECK-UBSAN-NEXT: %[[ARG2:.*]] = zext 115 // CHECK-UBSAN-NEXT: call void @__ubsan_handle_shift_out_of_bounds(i8* bitcast ({{.*}} @[[LINE_400]] to i8*), i64 %[[ARG1]], i64 %[[ARG2]]) 116 117 // CHECK-TRAP: call void @llvm.ubsantrap(i8 20) [[NR_NUW]] 118 // CHECK-TRAP-NEXT: unreachable 119 120 // CHECK-COMMON: %[[RET:.*]] = ashr i32 {{.*}}, %[[RHS]] 121 // CHECK-COMMON-NEXT: ret i32 %[[RET]] 122 #line 400 123 return a >> b; 124 } 125 126 // CHECK-COMMON-LABEL: @load 127 int load(int *p) { 128 // CHECK-UBSAN: call void @__ubsan_handle_type_mismatch_v1(i8* bitcast ({{.*}} @[[LINE_500]] to i8*), i64 %{{.*}}) 129 130 // CHECK-TRAP: call void @llvm.ubsantrap(i8 22) [[NR_NUW]] 131 // CHECK-TRAP-NEXT: unreachable 132 #line 500 133 return *p; 134 } 135 136 // CHECK-COMMON-LABEL: @store 137 void store(int *p, int q) { 138 // CHECK-UBSAN: call void @__ubsan_handle_type_mismatch_v1(i8* bitcast ({{.*}} @[[LINE_600]] to i8*), i64 %{{.*}}) 139 140 // CHECK-TRAP: call void @llvm.ubsantrap(i8 22) [[NR_NUW]] 141 // CHECK-TRAP-NEXT: unreachable 142 #line 600 143 *p = q; 144 } 145 146 struct S { int k; }; 147 148 // CHECK-COMMON-LABEL: @member_access 149 int *member_access(struct S *p) { 150 // CHECK-UBSAN: call void @__ubsan_handle_type_mismatch_v1(i8* bitcast ({{.*}} @[[LINE_700]] to i8*), i64 %{{.*}}) 151 152 // CHECK-TRAP: call void @llvm.ubsantrap(i8 22) [[NR_NUW]] 153 // CHECK-TRAP-NEXT: unreachable 154 #line 700 155 return &p->k; 156 } 157 158 // CHECK-COMMON-LABEL: @signed_overflow 159 int signed_overflow(int a, int b) { 160 // CHECK-UBSAN: %[[ARG1:.*]] = zext 161 // CHECK-UBSAN-NEXT: %[[ARG2:.*]] = zext 162 // CHECK-UBSAN-NEXT: call void @__ubsan_handle_add_overflow(i8* bitcast ({{.*}} @[[LINE_800]] to i8*), i64 %[[ARG1]], i64 %[[ARG2]]) 163 164 // CHECK-TRAP: call void @llvm.ubsantrap(i8 0) [[NR_NUW]] 165 // CHECK-TRAP-NEXT: unreachable 166 #line 800 167 return a + b; 168 } 169 170 // CHECK-COMMON-LABEL: @no_return 171 int no_return(void) { 172 // Reaching the end of a noreturn function is fine in C. 173 // FIXME: If the user explicitly requests -fsanitize=return, we should catch 174 // that here even though it's not undefined behavior. 175 // CHECK-COMMON-NOT: call 176 // CHECK-COMMON-NOT: unreachable 177 // CHECK-COMMON: ret i32 178 } 179 180 // CHECK-UBSAN-LABEL: @vla_bound 181 void vla_bound(int n) { 182 // CHECK-UBSAN: icmp sgt i32 %[[PARAM:.*]], 0 183 // 184 // CHECK-UBSAN: %[[ARG:.*]] = zext i32 %[[PARAM]] to i64 185 // CHECK-UBSAN-NEXT: call void @__ubsan_handle_vla_bound_not_positive(i8* bitcast ({{.*}} @[[LINE_900]] to i8*), i64 %[[ARG]]) 186 #line 900 187 int arr[n * 3]; 188 } 189 190 // CHECK-UBSAN-LABEL: @vla_bound_unsigned 191 void vla_bound_unsigned(unsigned int n) { 192 // CHECK-UBSAN: icmp ugt i32 %[[PARAM:.*]], 0 193 // 194 // CHECK-UBSAN: %[[ARG:.*]] = zext i32 %[[PARAM]] to i64 195 // CHECK-UBSAN-NEXT: call void @__ubsan_handle_vla_bound_not_positive(i8* bitcast ({{.*}} @[[LINE_1000]] to i8*), i64 %[[ARG]]) 196 #line 1000 197 int arr[n * 3]; 198 } 199 200 // CHECK-UBSAN-LABEL: @int_float_no_overflow 201 float int_float_no_overflow(__int128 n) { 202 // CHECK-UBSAN-NOT: call void @__ubsan_handle 203 return n; 204 } 205 206 // CHECK-COMMON-LABEL: @int_float_overflow 207 float int_float_overflow(unsigned __int128 n) { 208 // CHECK-UBSAN-NOT: call {{.*}} @__ubsan_handle_float_cast_overflow( 209 // CHECK-TRAP-NOT: call {{.*}} @llvm.trap( 210 // CHECK-COMMON: } 211 return n; 212 } 213 214 // CHECK-COMMON-LABEL: @int_fp16_overflow 215 void int_fp16_overflow(int n, __fp16 *p) { 216 // CHECK-UBSAN-NOT: call {{.*}} @__ubsan_handle_float_cast_overflow( 217 // CHECK-COMMON: } 218 *p = n; 219 } 220 221 // CHECK-COMMON-LABEL: @float_int_overflow 222 int float_int_overflow(float f) { 223 // CHECK-COMMON: %[[GE:.*]] = fcmp ogt float %[[F:.*]], 0xC1E0000020000000 224 // CHECK-COMMON: %[[LE:.*]] = fcmp olt float %[[F]], 0x41E0000000000000 225 // CHECK-COMMON: %[[INBOUNDS:.*]] = and i1 %[[GE]], %[[LE]] 226 // CHECK-COMMON-NEXT: br i1 %[[INBOUNDS]] 227 228 // CHECK-UBSAN: %[[CAST:.*]] = bitcast float %[[F]] to i32 229 // CHECK-UBSAN: %[[ARG:.*]] = zext i32 %[[CAST]] to i64 230 // CHECK-UBSAN: call void @__ubsan_handle_float_cast_overflow(i8* bitcast ({{.*}} @[[LINE_1200]] to i8*), i64 %[[ARG]] 231 232 // CHECK-TRAP: call void @llvm.ubsantrap(i8 5) [[NR_NUW]] 233 // CHECK-TRAP-NEXT: unreachable 234 #line 1200 235 return f; 236 } 237 238 // CHECK-COMMON-LABEL: @long_double_int_overflow 239 int long_double_int_overflow(long double ld) { 240 // CHECK-UBSAN: alloca x86_fp80 241 242 // CHECK-COMMON: %[[GE:.*]] = fcmp ogt x86_fp80 %[[F:.*]], 0xKC01E800000010000000 243 // CHECK-COMMON: %[[LE:.*]] = fcmp olt x86_fp80 %[[F]], 0xK401E800000000000000 244 // CHECK-COMMON: %[[INBOUNDS:.*]] = and i1 %[[GE]], %[[LE]] 245 // CHECK-COMMON-NEXT: br i1 %[[INBOUNDS]] 246 247 // CHECK-UBSAN: store x86_fp80 %[[F]], x86_fp80* %[[ALLOCA:.*]], align 16, !nosanitize 248 // CHECK-UBSAN: %[[ARG:.*]] = ptrtoint x86_fp80* %[[ALLOCA]] to i64 249 // CHECK-UBSAN: call void @__ubsan_handle_float_cast_overflow(i8* bitcast ({{.*}} @[[LINE_1300]] to i8*), i64 %[[ARG]] 250 251 // CHECK-TRAP: call void @llvm.ubsantrap(i8 5) [[NR_NUW]] 252 // CHECK-TRAP-NEXT: unreachable 253 #line 1300 254 return ld; 255 } 256 257 // CHECK-COMMON-LABEL: @float_uint_overflow 258 unsigned float_uint_overflow(float f) { 259 // CHECK-COMMON: %[[GE:.*]] = fcmp ogt float %[[F:.*]], -1.{{0*}}e+00 260 // CHECK-COMMON: %[[LE:.*]] = fcmp olt float %[[F]], 0x41F0000000000000 261 // CHECK-COMMON: %[[INBOUNDS:.*]] = and i1 %[[GE]], %[[LE]] 262 // CHECK-COMMON-NEXT: br i1 %[[INBOUNDS]] 263 264 // CHECK-UBSAN: call void @__ubsan_handle_float_cast_overflow(i8* bitcast ({{.*}} @[[LINE_1400]] to i8*), 265 266 // CHECK-TRAP: call void @llvm.ubsantrap(i8 5) [[NR_NUW]] 267 // CHECK-TRAP-NEXT: unreachable 268 #line 1400 269 return f; 270 } 271 272 // CHECK-COMMON-LABEL: @fp16_char_overflow 273 signed char fp16_char_overflow(__fp16 *p) { 274 // CHECK-COMMON: %[[GE:.*]] = fcmp ogt float %[[F:.*]], -1.29{{0*}}e+02 275 // CHECK-COMMON: %[[LE:.*]] = fcmp olt float %[[F]], 1.28{{0*}}e+02 276 // CHECK-COMMON: %[[INBOUNDS:.*]] = and i1 %[[GE]], %[[LE]] 277 // CHECK-COMMON-NEXT: br i1 %[[INBOUNDS]] 278 279 // CHECK-UBSAN: call void @__ubsan_handle_float_cast_overflow(i8* bitcast ({{.*}} @[[LINE_1500]] to i8*), 280 281 // CHECK-TRAP: call void @llvm.ubsantrap(i8 5) [[NR_NUW]] 282 // CHECK-TRAP-NEXT: unreachable 283 #line 1500 284 return *p; 285 } 286 287 // CHECK-COMMON-LABEL: @float_float_overflow 288 float float_float_overflow(double f) { 289 // CHECK-UBSAN-NOT: call {{.*}} @__ubsan_handle_float_cast_overflow( 290 // CHECK-TRAP-NOT: call {{.*}} @llvm.ubsantrap(i8 19) [[NR_NUW]] 291 // CHECK-COMMON: } 292 return f; 293 } 294 295 // CHECK-COMMON-LABEL: @int_divide_overflow 296 // CHECK-OVERFLOW-LABEL: @int_divide_overflow 297 int int_divide_overflow(int a, int b) { 298 // CHECK-COMMON: %[[ZERO:.*]] = icmp ne i32 %[[B:.*]], 0 299 // CHECK-OVERFLOW-NOT: icmp ne i32 %{{.*}}, 0 300 301 // CHECK-COMMON: %[[AOK:.*]] = icmp ne i32 %[[A:.*]], -2147483648 302 // CHECK-COMMON-NEXT: %[[BOK:.*]] = icmp ne i32 %[[B]], -1 303 // CHECK-COMMON-NEXT: %[[OVER:.*]] = or i1 %[[AOK]], %[[BOK]] 304 // CHECK-COMMON: %[[OK:.*]] = and i1 %[[ZERO]], %[[OVER]] 305 // CHECK-COMMON: br i1 %[[OK]] 306 307 // CHECK-OVERFLOW: %[[AOK:.*]] = icmp ne i32 %[[A:.*]], -2147483648 308 // CHECK-OVERFLOW-NEXT: %[[BOK:.*]] = icmp ne i32 %[[B:.*]], -1 309 // CHECK-OVERFLOW-NEXT: %[[OK:.*]] = or i1 %[[AOK]], %[[BOK]] 310 // CHECK-OVERFLOW: br i1 %[[OK]] 311 312 // CHECK-TRAP: call void @llvm.ubsantrap(i8 3) [[NR_NUW]] 313 // CHECK-TRAP: unreachable 314 return a / b; 315 316 // CHECK-COMMON: } 317 // CHECK-OVERFLOW: } 318 } 319 320 // CHECK-COMMON-LABEL: @sour_bool 321 _Bool sour_bool(_Bool *p) { 322 // CHECK-COMMON: %[[OK:.*]] = icmp ule i8 {{.*}}, 1 323 // CHECK-COMMON: br i1 %[[OK]] 324 325 // CHECK-UBSAN: call void @__ubsan_handle_load_invalid_value(i8* bitcast ({{.*}}), i64 {{.*}}) 326 327 // CHECK-TRAP: call void @llvm.ubsantrap(i8 10) [[NR_NUW]] 328 // CHECK-TRAP: unreachable 329 return *p; 330 } 331 332 // CHECK-COMMON-LABEL: @ret_nonnull 333 __attribute__((returns_nonnull)) 334 int *ret_nonnull(int *a) { 335 // CHECK-COMMON: [[OK:%.*]] = icmp ne i32* {{.*}}, null 336 // CHECK-COMMON: br i1 [[OK]] 337 338 // CHECK-UBSAN: call void @__ubsan_handle_nonnull_return 339 340 // CHECK-TRAP: call void @llvm.ubsantrap(i8 17) [[NR_NUW]] 341 // CHECK-TRAP: unreachable 342 return a; 343 } 344 345 // CHECK-COMMON-LABEL: @call_decl_nonnull 346 __attribute__((nonnull)) void decl_nonnull(int *a); 347 void call_decl_nonnull(int *a) { 348 // CHECK-COMMON: [[OK:%.*]] = icmp ne i32* {{.*}}, null 349 // CHECK-COMMON: br i1 [[OK]] 350 351 // CHECK-UBSAN: call void @__ubsan_handle_nonnull_arg 352 353 // CHECK-TRAP: call void @llvm.ubsantrap(i8 16) [[NR_NUW]] 354 // CHECK-TRAP: unreachable 355 decl_nonnull(a); 356 } 357 358 extern void *memcpy (void *, const void *, unsigned) __attribute__((nonnull(1, 2))); 359 360 // CHECK-COMMON-LABEL: @call_memcpy_nonnull 361 void call_memcpy_nonnull(void *p, void *q, int sz) { 362 // CHECK-COMMON: icmp ne i8* {{.*}}, null 363 // CHECK-UBSAN: call void @__ubsan_handle_nonnull_arg 364 // CHECK-TRAP: call void @llvm.ubsantrap(i8 16) 365 366 // CHECK-COMMON: icmp ne i8* {{.*}}, null 367 // CHECK-UBSAN: call void @__ubsan_handle_nonnull_arg 368 // CHECK-TRAP: call void @llvm.ubsantrap(i8 16) 369 memcpy(p, q, sz); 370 } 371 372 extern void *memmove (void *, const void *, unsigned) __attribute__((nonnull(1, 2))); 373 374 // CHECK-COMMON-LABEL: @call_memmove_nonnull 375 void call_memmove_nonnull(void *p, void *q, int sz) { 376 // CHECK-COMMON: icmp ne i8* {{.*}}, null 377 // CHECK-UBSAN: call void @__ubsan_handle_nonnull_arg 378 // CHECK-TRAP: call void @llvm.ubsantrap(i8 16) 379 380 // CHECK-COMMON: icmp ne i8* {{.*}}, null 381 // CHECK-UBSAN: call void @__ubsan_handle_nonnull_arg 382 // CHECK-TRAP: call void @llvm.ubsantrap(i8 16) 383 memmove(p, q, sz); 384 } 385 386 // CHECK-COMMON-LABEL: @call_nonnull_variadic 387 __attribute__((nonnull)) void nonnull_variadic(int a, ...); 388 void call_nonnull_variadic(int a, int *b) { 389 // CHECK-COMMON: [[OK:%.*]] = icmp ne i32* {{.*}}, null 390 // CHECK-COMMON: br i1 [[OK]] 391 392 // CHECK-UBSAN: call void @__ubsan_handle_nonnull_arg 393 // CHECK-UBSAN-NOT: __ubsan_handle_nonnull_arg 394 395 // CHECK-COMMON: call void (i32, ...) @nonnull_variadic 396 nonnull_variadic(a, b); 397 } 398 399 // CHECK-UBSAN: ![[WEIGHT_MD]] = !{!"branch_weights", i32 1048575, i32 1} 400 401 // CHECK-TRAP: attributes [[NR_NUW]] = { noreturn nounwind } 402