1 // RUN: %clang_cc1 -x c -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s 2 // RUN: %clang_cc1 -x c -fsanitize=pointer-overflow -fno-sanitize-recover=pointer-overflow -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s -implicit-check-not="call void @__ubsan_handle_pointer_overflow" --check-prefixes=CHECK,CHECK-SANITIZE,CHECK-SANITIZE-ANYRECOVER,CHECK-SANITIZE-NORECOVER,CHECK-SANITIZE-UNREACHABLE 3 // RUN: %clang_cc1 -x c -fsanitize=pointer-overflow -fsanitize-recover=pointer-overflow -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s -implicit-check-not="call void @__ubsan_handle_pointer_overflow" --check-prefixes=CHECK,CHECK-SANITIZE,CHECK-SANITIZE-ANYRECOVER,CHECK-SANITIZE-RECOVER 4 // RUN: %clang_cc1 -x c -fsanitize=pointer-overflow -fsanitize-trap=pointer-overflow -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s -implicit-check-not="call void @__ubsan_handle_pointer_overflow" --check-prefixes=CHECK,CHECK-SANITIZE,CHECK-SANITIZE-TRAP,CHECK-SANITIZE-UNREACHABLE 5 6 // RUN: %clang_cc1 -x c++ -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s 7 // RUN: %clang_cc1 -x c++ -fsanitize=pointer-overflow -fno-sanitize-recover=pointer-overflow -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s -implicit-check-not="call void @__ubsan_handle_pointer_overflow" --check-prefixes=CHECK,CHECK-SANITIZE,CHECK-SANITIZE-ANYRECOVER,CHECK-SANITIZE-NORECOVER,CHECK-SANITIZE-UNREACHABLE 8 // RUN: %clang_cc1 -x c++ -fsanitize=pointer-overflow -fsanitize-recover=pointer-overflow -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s -implicit-check-not="call void @__ubsan_handle_pointer_overflow" --check-prefixes=CHECK,CHECK-SANITIZE,CHECK-SANITIZE-ANYRECOVER,CHECK-SANITIZE-RECOVER 9 // RUN: %clang_cc1 -x c++ -fsanitize=pointer-overflow -fsanitize-trap=pointer-overflow -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s -implicit-check-not="call void @__ubsan_handle_pointer_overflow" --check-prefixes=CHECK,CHECK-SANITIZE,CHECK-SANITIZE-TRAP,CHECK-SANITIZE-UNREACHABLE 10 11 // CHECK-SANITIZE-ANYRECOVER-DAG: @[[LINE_100:.*]] = {{.*}}, i32 100, i32 15 } } 12 // CHECK-SANITIZE-ANYRECOVER-DAG: @[[LINE_200:.*]] = {{.*}}, i32 200, i32 15 } } 13 // CHECK-SANITIZE-ANYRECOVER-DAG: @[[LINE_300:.*]] = {{.*}}, i32 300, i32 15 } } 14 // CHECK-SANITIZE-ANYRECOVER-DAG: @[[LINE_400:.*]] = {{.*}}, i32 400, i32 15 } } 15 // CHECK-SANITIZE-ANYRECOVER-DAG: @[[LINE_500:.*]] = {{.*}}, i32 500, i32 7 } } 16 // CHECK-SANITIZE-ANYRECOVER-DAG: @[[LINE_600:.*]] = {{.*}}, i32 600, i32 7 } } 17 // CHECK-SANITIZE-ANYRECOVER-DAG: @[[LINE_700:.*]] = {{.*}}, i32 700, i32 3 } } 18 // CHECK-SANITIZE-ANYRECOVER-DAG: @[[LINE_800:.*]] = {{.*}}, i32 800, i32 3 } } 19 20 #ifdef __cplusplus 21 extern "C" { 22 #endif 23 24 char *add_unsigned(char *base, unsigned long offset) { 25 // CHECK: define{{.*}} ptr @add_unsigned(ptr noundef %[[BASE:.*]], i64 noundef %[[OFFSET:.*]]) 26 // CHECK-NEXT: [[ENTRY:.*]]: 27 // CHECK-NEXT: %[[BASE_ADDR:.*]] = alloca ptr, align 8 28 // CHECK-NEXT: %[[OFFSET_ADDR:.*]] = alloca i64, align 8 29 // CHECK-NEXT: store ptr %[[BASE]], ptr %[[BASE_ADDR]], align 8 30 // CHECK-NEXT: store i64 %[[OFFSET]], ptr %[[OFFSET_ADDR]], align 8 31 // CHECK-NEXT: %[[BASE_RELOADED:.*]] = load ptr, ptr %[[BASE_ADDR]], align 8 32 // CHECK-NEXT: %[[OFFSET_RELOADED:.*]] = load i64, ptr %[[OFFSET_ADDR]], align 8 33 // CHECK-NEXT: %[[ADD_PTR:.*]] = getelementptr inbounds nuw i8, ptr %[[BASE_RELOADED]], i64 %[[OFFSET_RELOADED]] 34 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_AGGREGATE:.*]] = call { i64, i1 } @llvm.smul.with.overflow.i64(i64 1, i64 %[[OFFSET_RELOADED]]), !nosanitize 35 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_OVERFLOWED:.*]] = extractvalue { i64, i1 } %[[COMPUTED_OFFSET_AGGREGATE]], 1, !nosanitize 36 // CHECK-SANITIZE-NEXT: %[[OR_OV:.+]] = or i1 %[[COMPUTED_OFFSET_OVERFLOWED]], false, !nosanitize 37 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET:.*]] = extractvalue { i64, i1 } %[[COMPUTED_OFFSET_AGGREGATE]], 0, !nosanitize 38 // CHECK-SANITIZE-NEXT: %[[BASE_RELOADED_INT:.*]] = ptrtoint ptr %[[BASE_RELOADED]] to i64, !nosanitize 39 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP:.*]] = add i64 %[[BASE_RELOADED_INT]], %[[COMPUTED_OFFSET]], !nosanitize 40 // CHECK-SANITIZE-NEXT: %[[BASE_IS_NOT_NULLPTR:.*]] = icmp ne ptr %[[BASE_RELOADED]], null, !nosanitize 41 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_NOT_NULL:.*]] = icmp ne i64 %[[COMPUTED_GEP]], 0, !nosanitize 42 // CHECK-SANITIZE-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = icmp eq i1 %[[BASE_IS_NOT_NULLPTR]], %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize 43 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_DID_NOT_OVERFLOW:.*]] = xor i1 %[[OR_OV]], true, !nosanitize 44 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_UGE_BASE:.*]] = icmp uge i64 %[[COMPUTED_GEP]], %[[BASE_RELOADED_INT]], !nosanitize 45 // CHECK-SANITIZE-NEXT: %[[GEP_DID_NOT_OVERFLOW:.*]] = and i1 %[[COMPUTED_GEP_IS_UGE_BASE]], %[[COMPUTED_OFFSET_DID_NOT_OVERFLOW]], !nosanitize 46 // CHECK-SANITIZE-NEXT: %[[GEP_IS_OKAY:.*]] = and i1 %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL]], %[[GEP_DID_NOT_OVERFLOW]], !nosanitize 47 // CHECK-SANITIZE-NEXT: br i1 %[[GEP_IS_OKAY]], label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize 48 // CHECK-SANITIZE: [[HANDLER_POINTER_OVERFLOW]]: 49 // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_pointer_overflow_abort(ptr @[[LINE_100]], i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]]) 50 // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_pointer_overflow(ptr @[[LINE_100]], i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]]) 51 // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.ubsantrap(i8 19){{.*}}, !nosanitize 52 // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize 53 // CHECK-SANITIZE: [[CONT]]: 54 // CHECK-NEXT: ret ptr %[[ADD_PTR]] 55 #line 100 56 return base + offset; 57 } 58 59 char *sub_unsigned(char *base, unsigned long offset) { 60 // CHECK: define{{.*}} ptr @sub_unsigned(ptr noundef %[[BASE:.*]], i64 noundef %[[OFFSET:.*]]) 61 // CHECK-NEXT: [[ENTRY:.*]]: 62 // CHECK-NEXT: %[[BASE_ADDR:.*]] = alloca ptr, align 8 63 // CHECK-NEXT: %[[OFFSET_ADDR:.*]] = alloca i64, align 8 64 // CHECK-NEXT: store ptr %[[BASE]], ptr %[[BASE_ADDR]], align 8 65 // CHECK-NEXT: store i64 %[[OFFSET]], ptr %[[OFFSET_ADDR]], align 8 66 // CHECK-NEXT: %[[BASE_RELOADED:.*]] = load ptr, ptr %[[BASE_ADDR]], align 8 67 // CHECK-NEXT: %[[OFFSET_RELOADED:.*]] = load i64, ptr %[[OFFSET_ADDR]], align 8 68 // CHECK-NEXT: %[[IDX_NEG:.*]] = sub i64 0, %[[OFFSET_RELOADED]] 69 // CHECK-NEXT: %[[ADD_PTR:.*]] = getelementptr inbounds i8, ptr %[[BASE_RELOADED]], i64 %[[IDX_NEG]] 70 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_AGGREGATE:.*]] = call { i64, i1 } @llvm.smul.with.overflow.i64(i64 1, i64 %[[IDX_NEG]]), !nosanitize 71 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_OVERFLOWED:.*]] = extractvalue { i64, i1 } %[[COMPUTED_OFFSET_AGGREGATE]], 1, !nosanitize 72 // CHECK-SANITIZE-NEXT: %[[OR_OV:.+]] = or i1 %[[COMPUTED_OFFSET_OVERFLOWED]], false, !nosanitize 73 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET:.*]] = extractvalue { i64, i1 } %[[COMPUTED_OFFSET_AGGREGATE]], 0, !nosanitize 74 // CHECK-SANITIZE-NEXT: %[[BASE_RELOADED_INT:.*]] = ptrtoint ptr %[[BASE_RELOADED]] to i64, !nosanitize 75 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP:.*]] = add i64 %[[BASE_RELOADED_INT]], %[[COMPUTED_OFFSET]], !nosanitize 76 // CHECK-SANITIZE-NEXT: %[[BASE_IS_NOT_NULLPTR:.*]] = icmp ne ptr %[[BASE_RELOADED]], null, !nosanitize 77 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_NOT_NULL:.*]] = icmp ne i64 %[[COMPUTED_GEP]], 0, !nosanitize 78 // CHECK-SANITIZE-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = icmp eq i1 %[[BASE_IS_NOT_NULLPTR]], %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize 79 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_DID_NOT_OVERFLOW:.*]] = xor i1 %[[OR_OV]], true, !nosanitize 80 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_ULE_BASE:.*]] = icmp ule i64 %[[COMPUTED_GEP]], %[[BASE_RELOADED_INT]], !nosanitize 81 // CHECK-SANITIZE-NEXT: %[[GEP_DID_NOT_OVERFLOW:.*]] = and i1 %[[COMPUTED_GEP_IS_ULE_BASE]], %[[COMPUTED_OFFSET_DID_NOT_OVERFLOW]], !nosanitize 82 // CHECK-SANITIZE-NEXT: %[[GEP_IS_OKAY:.*]] = and i1 %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL]], %[[GEP_DID_NOT_OVERFLOW]], !nosanitize 83 // CHECK-SANITIZE-NEXT: br i1 %[[GEP_IS_OKAY]], label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize 84 // CHECK-SANITIZE: [[HANDLER_POINTER_OVERFLOW]]: 85 // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_pointer_overflow_abort(ptr @[[LINE_200]], i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]]) 86 // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_pointer_overflow(ptr @[[LINE_200]], i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]]) 87 // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.ubsantrap(i8 19){{.*}}, !nosanitize 88 // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize 89 // CHECK-SANITIZE: [[CONT]]: 90 // CHECK-NEXT: ret ptr %[[ADD_PTR]] 91 #line 200 92 return base - offset; 93 } 94 95 char *add_signed(char *base, signed long offset) { 96 // CHECK: define{{.*}} ptr @add_signed(ptr noundef %[[BASE:.*]], i64 noundef %[[OFFSET:.*]]) 97 // CHECK-NEXT: [[ENTRY:.*]]: 98 // CHECK-NEXT: %[[BASE_ADDR:.*]] = alloca ptr, align 8 99 // CHECK-NEXT: %[[OFFSET_ADDR:.*]] = alloca i64, align 8 100 // CHECK-NEXT: store ptr %[[BASE]], ptr %[[BASE_ADDR]], align 8 101 // CHECK-NEXT: store i64 %[[OFFSET]], ptr %[[OFFSET_ADDR]], align 8 102 // CHECK-NEXT: %[[BASE_RELOADED:.*]] = load ptr, ptr %[[BASE_ADDR]], align 8 103 // CHECK-NEXT: %[[OFFSET_RELOADED:.*]] = load i64, ptr %[[OFFSET_ADDR]], align 8 104 // CHECK-NEXT: %[[ADD_PTR:.*]] = getelementptr inbounds i8, ptr %[[BASE_RELOADED]], i64 %[[OFFSET_RELOADED]] 105 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_AGGREGATE:.*]] = call { i64, i1 } @llvm.smul.with.overflow.i64(i64 1, i64 %[[OFFSET_RELOADED]]), !nosanitize 106 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_OVERFLOWED:.*]] = extractvalue { i64, i1 } %[[COMPUTED_OFFSET_AGGREGATE]], 1, !nosanitize 107 // CHECK-SANITIZE-NEXT: %[[OR_OV:.+]] = or i1 %[[COMPUTED_OFFSET_OVERFLOWED]], false, !nosanitize 108 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET:.*]] = extractvalue { i64, i1 } %[[COMPUTED_OFFSET_AGGREGATE]], 0, !nosanitize 109 // CHECK-SANITIZE-NEXT: %[[BASE_RELOADED_INT:.*]] = ptrtoint ptr %[[BASE_RELOADED]] to i64, !nosanitize 110 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP:.*]] = add i64 %[[BASE_RELOADED_INT]], %[[COMPUTED_OFFSET]], !nosanitize 111 // CHECK-SANITIZE-NEXT: %[[BASE_IS_NOT_NULLPTR:.*]] = icmp ne ptr %[[BASE_RELOADED]], null, !nosanitize 112 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_NOT_NULL:.*]] = icmp ne i64 %[[COMPUTED_GEP]], 0, !nosanitize 113 // CHECK-SANITIZE-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = icmp eq i1 %[[BASE_IS_NOT_NULLPTR]], %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize 114 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_DID_NOT_OVERFLOW:.*]] = xor i1 %[[OR_OV]], true, !nosanitize 115 // CHECK-SANITIZE-NEXT: %[[POSORZEROVALID:.*]] = icmp uge i64 %[[COMPUTED_GEP]], %[[BASE_RELOADED_INT]], !nosanitize 116 // CHECK-SANITIZE-NEXT: %[[POSORZEROOFFSET:.*]] = icmp sge i64 %[[COMPUTED_OFFSET]], 0, !nosanitize 117 // CHECK-SANITIZE-NEXT: %[[NEGVALID:.*]] = icmp ult i64 %[[COMPUTED_GEP]], %[[BASE_RELOADED_INT]], !nosanitize 118 // CHECK-SANITIZE-NEXT: %[[APPLYING_OFFSET_DID_NOT_OVERFLOW:.*]] = select i1 %[[POSORZEROOFFSET]], i1 %[[POSORZEROVALID]], i1 %[[NEGVALID]], !nosanitize 119 // CHECK-SANITIZE-NEXT: %[[GEP_DID_NOT_OVERFLOW:.*]] = and i1 %[[APPLYING_OFFSET_DID_NOT_OVERFLOW]], %[[COMPUTED_OFFSET_DID_NOT_OVERFLOW]], !nosanitize 120 // CHECK-SANITIZE-NEXT: %[[GEP_IS_OKAY:.*]] = and i1 %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL]], %[[GEP_DID_NOT_OVERFLOW]], !nosanitize 121 // CHECK-SANITIZE-NEXT: br i1 %[[GEP_IS_OKAY]], label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize 122 // CHECK-SANITIZE: [[HANDLER_POINTER_OVERFLOW]]: 123 // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_pointer_overflow_abort(ptr @[[LINE_300]], i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]]) 124 // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_pointer_overflow(ptr @[[LINE_300]], i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]]) 125 // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.ubsantrap(i8 19){{.*}}, !nosanitize 126 // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize 127 // CHECK-SANITIZE: [[CONT]]: 128 // CHECK-NEXT: ret ptr %[[ADD_PTR]] 129 #line 300 130 return base + offset; 131 } 132 133 char *sub_signed(char *base, signed long offset) { 134 // CHECK: define{{.*}} ptr @sub_signed(ptr noundef %[[BASE:.*]], i64 noundef %[[OFFSET:.*]]) 135 // CHECK-NEXT: [[ENTRY:.*]]: 136 // CHECK-NEXT: %[[BASE_ADDR:.*]] = alloca ptr, align 8 137 // CHECK-NEXT: %[[OFFSET_ADDR:.*]] = alloca i64, align 8 138 // CHECK-NEXT: store ptr %[[BASE]], ptr %[[BASE_ADDR]], align 8 139 // CHECK-NEXT: store i64 %[[OFFSET]], ptr %[[OFFSET_ADDR]], align 8 140 // CHECK-NEXT: %[[BASE_RELOADED:.*]] = load ptr, ptr %[[BASE_ADDR]], align 8 141 // CHECK-NEXT: %[[OFFSET_RELOADED:.*]] = load i64, ptr %[[OFFSET_ADDR]], align 8 142 // CHECK-NEXT: %[[IDX_NEG:.*]] = sub i64 0, %[[OFFSET_RELOADED]] 143 // CHECK-NEXT: %[[ADD_PTR:.*]] = getelementptr inbounds i8, ptr %[[BASE_RELOADED]], i64 %[[IDX_NEG]] 144 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_AGGREGATE:.*]] = call { i64, i1 } @llvm.smul.with.overflow.i64(i64 1, i64 %[[IDX_NEG]]), !nosanitize 145 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_OVERFLOWED:.*]] = extractvalue { i64, i1 } %[[COMPUTED_OFFSET_AGGREGATE]], 1, !nosanitize 146 // CHECK-SANITIZE-NEXT: %[[OR_OV:.+]] = or i1 %[[COMPUTED_OFFSET_OVERFLOWED]], false, !nosanitize 147 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET:.*]] = extractvalue { i64, i1 } %[[COMPUTED_OFFSET_AGGREGATE]], 0, !nosanitize 148 // CHECK-SANITIZE-NEXT: %[[BASE_RELOADED_INT:.*]] = ptrtoint ptr %[[BASE_RELOADED]] to i64, !nosanitize 149 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP:.*]] = add i64 %[[BASE_RELOADED_INT]], %[[COMPUTED_OFFSET]], !nosanitize 150 // CHECK-SANITIZE-NEXT: %[[BASE_IS_NOT_NULLPTR:.*]] = icmp ne ptr %[[BASE_RELOADED]], null, !nosanitize 151 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_NOT_NULL:.*]] = icmp ne i64 %[[COMPUTED_GEP]], 0, !nosanitize 152 // CHECK-SANITIZE-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = icmp eq i1 %[[BASE_IS_NOT_NULLPTR]], %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize 153 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_DID_NOT_OVERFLOW:.*]] = xor i1 %[[OR_OV]], true, !nosanitize 154 // CHECK-SANITIZE-NEXT: %[[POSORZEROVALID:.*]] = icmp uge i64 %[[COMPUTED_GEP]], %[[BASE_RELOADED_INT]], !nosanitize 155 // CHECK-SANITIZE-NEXT: %[[POSORZEROOFFSET:.*]] = icmp sge i64 %[[COMPUTED_OFFSET]], 0, !nosanitize 156 // CHECK-SANITIZE-NEXT: %[[NEGVALID:.*]] = icmp ult i64 %[[COMPUTED_GEP]], %[[BASE_RELOADED_INT]], !nosanitize 157 // CHECK-SANITIZE-NEXT: %[[APPLYING_OFFSET_DID_NOT_OVERFLOW:.*]] = select i1 %[[POSORZEROOFFSET]], i1 %[[POSORZEROVALID]], i1 %[[NEGVALID]], !nosanitize 158 // CHECK-SANITIZE-NEXT: %[[GEP_DID_NOT_OVERFLOW:.*]] = and i1 %[[APPLYING_OFFSET_DID_NOT_OVERFLOW]], %[[COMPUTED_OFFSET_DID_NOT_OVERFLOW]], !nosanitize 159 // CHECK-SANITIZE-NEXT: %[[GEP_IS_OKAY:.*]] = and i1 %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL]], %[[GEP_DID_NOT_OVERFLOW]], !nosanitize 160 // CHECK-SANITIZE-NEXT: br i1 %[[GEP_IS_OKAY]], label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize 161 // CHECK-SANITIZE: [[HANDLER_POINTER_OVERFLOW]]: 162 // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_pointer_overflow_abort(ptr @[[LINE_400]], i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]]) 163 // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_pointer_overflow(ptr @[[LINE_400]], i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]]) 164 // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.ubsantrap(i8 19){{.*}}, !nosanitize 165 // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize 166 // CHECK-SANITIZE: [[CONT]]: 167 // CHECK-NEXT: ret ptr %[[ADD_PTR]] 168 #line 400 169 return base - offset; 170 } 171 172 char *postinc(char *base) { 173 // CHECK: define{{.*}} ptr @postinc(ptr noundef %[[BASE:.*]]) 174 // CHECK-NEXT: [[ENTRY:.*]]: 175 // CHECK-NEXT: %[[BASE_ADDR:.*]] = alloca ptr, align 8 176 // CHECK-NEXT: store ptr %[[BASE]], ptr %[[BASE_ADDR]], align 8 177 // CHECK-NEXT: %[[BASE_RELOADED:.*]] = load ptr, ptr %[[BASE_ADDR]], align 8 178 // CHECK-NEXT: %[[ADD_PTR:.*]] = getelementptr inbounds nuw i8, ptr %[[BASE_RELOADED]], i32 1 179 // CHECK-SANITIZE-NEXT: %[[BASE_RELOADED_INT:.*]] = ptrtoint ptr %[[BASE_RELOADED]] to i64, !nosanitize 180 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP:.*]] = add i64 %[[BASE_RELOADED_INT]], 1, !nosanitize 181 // CHECK-SANITIZE-NEXT: %[[BASE_IS_NOT_NULLPTR:.*]] = icmp ne ptr %[[BASE_RELOADED]], null, !nosanitize 182 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_NOT_NULL:.*]] = icmp ne i64 %[[COMPUTED_GEP]], 0, !nosanitize 183 // CHECK-SANITIZE-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = icmp eq i1 %[[BASE_IS_NOT_NULLPTR]], %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize 184 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_UGE_BASE:.*]] = icmp uge i64 %[[COMPUTED_GEP]], %[[BASE_RELOADED_INT]], !nosanitize 185 // CHECK-SANITIZE-NEXT: %[[AND_TRUE:.*]] = and i1 %[[COMPUTED_GEP_IS_UGE_BASE]], true, !nosanitize 186 // CHECK-SANITIZE-NEXT: %[[GEP_IS_OKAY:.*]] = and i1 %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL]], %[[AND_TRUE]], !nosanitize 187 // CHECK-SANITIZE-NEXT: br i1 %[[GEP_IS_OKAY]], label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize 188 // CHECK-SANITIZE: [[HANDLER_POINTER_OVERFLOW]]: 189 // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_pointer_overflow_abort(ptr @[[LINE_500]], i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]]) 190 // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_pointer_overflow(ptr @[[LINE_500]], i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]]) 191 // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.ubsantrap(i8 19){{.*}}, !nosanitize 192 // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize 193 // CHECK-SANITIZE: [[CONT]]: 194 // CHECK-NEXT: store ptr %[[ADD_PTR]], ptr %[[BASE_ADDR]], align 8 195 // CHECK-NEXT: %[[ADD_PTR_RELOADED:.*]] = load ptr, ptr %[[BASE_ADDR]], align 8 196 // CHECK-NEXT: ret ptr %[[ADD_PTR_RELOADED]] 197 #line 500 198 base++; 199 return base; 200 } 201 202 char *postdec(char *base) { 203 // CHECK: define{{.*}} ptr @postdec(ptr noundef %[[BASE:.*]]) 204 // CHECK-NEXT: [[ENTRY:.*]]: 205 // CHECK-NEXT: %[[BASE_ADDR:.*]] = alloca ptr, align 8 206 // CHECK-NEXT: store ptr %[[BASE]], ptr %[[BASE_ADDR]], align 8 207 // CHECK-NEXT: %[[BASE_RELOADED:.*]] = load ptr, ptr %[[BASE_ADDR]], align 8 208 // CHECK-NEXT: %[[ADD_PTR:.*]] = getelementptr inbounds i8, ptr %[[BASE_RELOADED]], i32 -1 209 // CHECK-SANITIZE-NEXT: %[[BASE_RELOADED_INT:.*]] = ptrtoint ptr %[[BASE_RELOADED]] to i64, !nosanitize 210 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP:.*]] = add i64 %[[BASE_RELOADED_INT]], -1, !nosanitize 211 // CHECK-SANITIZE-NEXT: %[[BASE_IS_NOT_NULLPTR:.*]] = icmp ne ptr %[[BASE_RELOADED]], null, !nosanitize 212 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_NOT_NULL:.*]] = icmp ne i64 %[[COMPUTED_GEP]], 0, !nosanitize 213 // CHECK-SANITIZE-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = icmp eq i1 %[[BASE_IS_NOT_NULLPTR]], %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize 214 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_ULE_BASE:.*]] = icmp ule i64 %[[COMPUTED_GEP]], %[[BASE_RELOADED_INT]], !nosanitize 215 // CHECK-SANITIZE-NEXT: %[[AND_TRUE:.*]] = and i1 %[[COMPUTED_GEP_IS_UGE_BASE]], true, !nosanitize 216 // CHECK-SANITIZE-NEXT: %[[GEP_IS_OKAY:.*]] = and i1 %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL]], %[[AND_TRUE]], !nosanitize 217 // CHECK-SANITIZE-NEXT: br i1 %[[GEP_IS_OKAY]], label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize 218 // CHECK-SANITIZE: [[HANDLER_POINTER_OVERFLOW]]: 219 // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_pointer_overflow_abort(ptr @[[LINE_600]], i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]]) 220 // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_pointer_overflow(ptr @[[LINE_600]], i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]]) 221 // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.ubsantrap(i8 19){{.*}}, !nosanitize 222 // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize 223 // CHECK-SANITIZE: [[CONT]]: 224 // CHECK-NEXT: store ptr %[[ADD_PTR]], ptr %[[BASE_ADDR]], align 8 225 // CHECK-NEXT: %[[ADD_PTR_RELOADED:.*]] = load ptr, ptr %[[BASE_ADDR]], align 8 226 // CHECK-NEXT: ret ptr %[[ADD_PTR_RELOADED]] 227 #line 600 228 base--; 229 return base; 230 } 231 232 char *preinc(char *base) { 233 // CHECK: define{{.*}} ptr @preinc(ptr noundef %[[BASE:.*]]) 234 // CHECK-NEXT: [[ENTRY:.*]]: 235 // CHECK-NEXT: %[[BASE_ADDR:.*]] = alloca ptr, align 8 236 // CHECK-NEXT: store ptr %[[BASE]], ptr %[[BASE_ADDR]], align 8 237 // CHECK-NEXT: %[[BASE_RELOADED:.*]] = load ptr, ptr %[[BASE_ADDR]], align 8 238 // CHECK-NEXT: %[[ADD_PTR:.*]] = getelementptr inbounds nuw i8, ptr %[[BASE_RELOADED]], i32 1 239 // CHECK-SANITIZE-NEXT: %[[BASE_RELOADED_INT:.*]] = ptrtoint ptr %[[BASE_RELOADED]] to i64, !nosanitize 240 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP:.*]] = add i64 %[[BASE_RELOADED_INT]], 1, !nosanitize 241 // CHECK-SANITIZE-NEXT: %[[BASE_IS_NOT_NULLPTR:.*]] = icmp ne ptr %[[BASE_RELOADED]], null, !nosanitize 242 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_NOT_NULL:.*]] = icmp ne i64 %[[COMPUTED_GEP]], 0, !nosanitize 243 // CHECK-SANITIZE-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = icmp eq i1 %[[BASE_IS_NOT_NULLPTR]], %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize 244 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_UGE_BASE:.*]] = icmp uge i64 %[[COMPUTED_GEP]], %[[BASE_RELOADED_INT]], !nosanitize 245 // CHECK-SANITIZE-NEXT: %[[AND_TRUE:.*]] = and i1 %[[COMPUTED_GEP_IS_UGE_BASE]], true, !nosanitize 246 // CHECK-SANITIZE-NEXT: %[[GEP_IS_OKAY:.*]] = and i1 %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL]], %[[AND_TRUE]], !nosanitize 247 // CHECK-SANITIZE-NEXT: br i1 %[[GEP_IS_OKAY]], label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize 248 // CHECK-SANITIZE: [[HANDLER_POINTER_OVERFLOW]]: 249 // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_pointer_overflow_abort(ptr @[[LINE_700]], i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]]) 250 // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_pointer_overflow(ptr @[[LINE_700]], i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]]) 251 // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.ubsantrap(i8 19){{.*}}, !nosanitize 252 // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize 253 // CHECK-SANITIZE: [[CONT]]: 254 // CHECK-NEXT: store ptr %[[ADD_PTR]], ptr %[[BASE_ADDR]], align 8 255 // CHECK-NEXT: %[[ADD_PTR_RELOADED:.*]] = load ptr, ptr %[[BASE_ADDR]], align 8 256 // CHECK-NEXT: ret ptr %[[ADD_PTR_RELOADED]] 257 #line 700 258 ++base; 259 return base; 260 } 261 262 char *predec(char *base) { 263 // CHECK: define{{.*}} ptr @predec(ptr noundef %[[BASE:.*]]) 264 // CHECK-NEXT: [[ENTRY:.*]]: 265 // CHECK-NEXT: %[[BASE_ADDR:.*]] = alloca ptr, align 8 266 // CHECK-NEXT: store ptr %[[BASE]], ptr %[[BASE_ADDR]], align 8 267 // CHECK-NEXT: %[[BASE_RELOADED:.*]] = load ptr, ptr %[[BASE_ADDR]], align 8 268 // CHECK-NEXT: %[[ADD_PTR:.*]] = getelementptr inbounds i8, ptr %[[BASE_RELOADED]], i32 -1 269 // CHECK-SANITIZE-NEXT: %[[BASE_RELOADED_INT:.*]] = ptrtoint ptr %[[BASE_RELOADED]] to i64, !nosanitize 270 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP:.*]] = add i64 %[[BASE_RELOADED_INT]], -1, !nosanitize 271 // CHECK-SANITIZE-NEXT: %[[BASE_IS_NOT_NULLPTR:.*]] = icmp ne ptr %[[BASE_RELOADED]], null, !nosanitize 272 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_NOT_NULL:.*]] = icmp ne i64 %[[COMPUTED_GEP]], 0, !nosanitize 273 // CHECK-SANITIZE-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = icmp eq i1 %[[BASE_IS_NOT_NULLPTR]], %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize 274 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_ULE_BASE:.*]] = icmp ule i64 %[[COMPUTED_GEP]], %[[BASE_RELOADED_INT]], !nosanitize 275 // CHECK-SANITIZE-NEXT: %[[AND_TRUE:.*]] = and i1 %[[COMPUTED_GEP_IS_UGE_BASE]], true, !nosanitize 276 // CHECK-SANITIZE-NEXT: %[[GEP_IS_OKAY:.*]] = and i1 %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL]], %[[AND_TRUE]], !nosanitize 277 // CHECK-SANITIZE-NEXT: br i1 %[[GEP_IS_OKAY]], label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize 278 // CHECK-SANITIZE: [[HANDLER_POINTER_OVERFLOW]]: 279 // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_pointer_overflow_abort(ptr @[[LINE_800]], i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]]) 280 // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_pointer_overflow(ptr @[[LINE_800]], i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]]) 281 // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.ubsantrap(i8 19){{.*}}, !nosanitize 282 // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize 283 // CHECK-SANITIZE: [[CONT]]: 284 // CHECK-NEXT: store ptr %[[ADD_PTR]], ptr %[[BASE_ADDR]], align 8 285 // CHECK-NEXT: %[[ADD_PTR_RELOADED:.*]] = load ptr, ptr %[[BASE_ADDR]], align 8 286 // CHECK-NEXT: ret ptr %[[ADD_PTR_RELOADED]] 287 #line 800 288 --base; 289 return base; 290 } 291 292 #ifdef __cplusplus 293 } 294 #endif 295