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