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,CHECK-SANITIZE-C,CHECK-SANITIZE-ANYRECOVER-C,CHECK-SANITIZE-NORECOVER-C,CHECK-SANITIZE-UNREACHABLE-C 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,CHECK-SANITIZE-C,CHECK-SANITIZE-ANYRECOVER-C,CHECK-SANITIZE-RECOVER-C 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,CHECK-SANITIZE-C,CHECK-SANITIZE-TRAP-C,CHECK-SANITIZE-UNREACHABLE-C 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,CHECK-SANITIZE-CPP 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,CHECK-SANITIZE-CPP 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,CHECK-SANITIZE-CPP 10 11 // In C++/LLVM IR, if the base pointer evaluates to a null pointer value, 12 // the only valid pointer this inbounds GEP can produce is also a null pointer. 13 // Likewise, if we have non-zero base pointer, we can not get null pointer 14 // as a result, so the offset can not be -int(BasePtr). 15 16 // So in other words, the offset can not change "null status" of the pointer, 17 // as in if the pointer was null, it can not become non-null, and vice versa, 18 // if it was non-null, it can not become null. 19 20 // In C, however, offsetting null pointer is completely undefined, even by 0. 21 22 // CHECK-SANITIZE-ANYRECOVER-DAG: @[[LINE_100:.*]] = {{.*}}, i32 100, i32 15 } } 23 // CHECK-SANITIZE-ANYRECOVER-C-DAG: @[[LINE_200:.*]] = {{.*}}, i32 200, i32 15 } } 24 // CHECK-SANITIZE-ANYRECOVER-DAG: @[[LINE_300:.*]] = {{.*}}, i32 300, i32 15 } } 25 // CHECK-SANITIZE-ANYRECOVER-DAG: @[[LINE_400:.*]] = {{.*}}, i32 400, i32 15 } } 26 // CHECK-SANITIZE-ANYRECOVER-DAG: @[[LINE_500:.*]] = {{.*}}, i32 500, i32 15 } } 27 // CHECK-SANITIZE-ANYRECOVER-C-DAG: @[[LINE_600:.*]] = {{.*}}, i32 600, i32 15 } } 28 // CHECK-SANITIZE-ANYRECOVER-DAG: @[[LINE_700:.*]] = {{.*}}, i32 700, i32 15 } } 29 // CHECK-SANITIZE-ANYRECOVER-DAG: @[[LINE_800:.*]] = {{.*}}, i32 800, i32 15 } } 30 // CHECK-SANITIZE-ANYRECOVER-DAG: @[[LINE_900:.*]] = {{.*}}, i32 900, i32 15 } } 31 // CHECK-SANITIZE-ANYRECOVER-C-DAG: @[[LINE_1000:.*]] = {{.*}}, i32 1000, i32 15 } } 32 // CHECK-SANITIZE-ANYRECOVER-DAG: @[[LINE_1100:.*]] = {{.*}}, i32 1100, i32 15 } } 33 // CHECK-SANITIZE-ANYRECOVER-DAG: @[[LINE_1200:.*]] = {{.*}}, i32 1200, i32 15 } } 34 // CHECK-SANITIZE-ANYRECOVER-DAG: @[[LINE_1300:.*]] = {{.*}}, i32 1300, i32 15 } } 35 // CHECK-SANITIZE-ANYRECOVER-C-DAG: @[[LINE_1400:.*]] = {{.*}}, i32 1400, i32 15 } } 36 // CHECK-SANITIZE-ANYRECOVER-DAG: @[[LINE_1500:.*]] = {{.*}}, i32 1500, i32 15 } } 37 // CHECK-SANITIZE-ANYRECOVER-DAG: @[[LINE_1600:.*]] = {{.*}}, i32 1600, i32 15 } } 38 39 #ifdef __cplusplus 40 extern "C" { 41 #endif 42 43 char *var_var(char *base, unsigned long offset) { 44 // CHECK: define{{.*}} i8* @var_var(i8* noundef %[[BASE:.*]], i64 noundef %[[OFFSET:.*]]) 45 // CHECK-NEXT: [[ENTRY:.*]]: 46 // CHECK-NEXT: %[[BASE_ADDR:.*]] = alloca i8*, align 8 47 // CHECK-NEXT: %[[OFFSET_ADDR:.*]] = alloca i64, align 8 48 // CHECK-NEXT: store i8* %[[BASE]], i8** %[[BASE_ADDR]], align 8 49 // CHECK-NEXT: store i64 %[[OFFSET]], i64* %[[OFFSET_ADDR]], align 8 50 // CHECK-NEXT: %[[BASE_RELOADED:.*]] = load i8*, i8** %[[BASE_ADDR]], align 8 51 // CHECK-NEXT: %[[OFFSET_RELOADED:.*]] = load i64, i64* %[[OFFSET_ADDR]], align 8 52 // CHECK-NEXT: %[[ADD_PTR:.*]] = getelementptr inbounds i8, i8* %[[BASE_RELOADED]], i64 %[[OFFSET_RELOADED]] 53 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_AGGREGATE:.*]] = call { i64, i1 } @llvm.smul.with.overflow.i64(i64 1, i64 %[[OFFSET_RELOADED]]), !nosanitize 54 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_OVERFLOWED:.*]] = extractvalue { i64, i1 } %[[COMPUTED_OFFSET_AGGREGATE]], 1, !nosanitize 55 // CHECK-SANITIZE-NEXT: %[[OR_OV:.+]] = or i1 %[[COMPUTED_OFFSET_OVERFLOWED]], false, !nosanitize 56 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET:.*]] = extractvalue { i64, i1 } %[[COMPUTED_OFFSET_AGGREGATE]], 0, !nosanitize 57 // CHECK-SANITIZE-NEXT: %[[BASE_RELOADED_INT:.*]] = ptrtoint i8* %[[BASE_RELOADED]] to i64, !nosanitize 58 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP:.*]] = add i64 %[[BASE_RELOADED_INT]], %[[COMPUTED_OFFSET]], !nosanitize 59 // CHECK-SANITIZE-NEXT: %[[BASE_IS_NOT_NULLPTR:.*]] = icmp ne i8* %[[BASE_RELOADED]], null, !nosanitize 60 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_NOT_NULL:.*]] = icmp ne i64 %[[COMPUTED_GEP]], 0, !nosanitize 61 // CHECK-SANITIZE-C-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = and i1 %[[BASE_IS_NOT_NULLPTR]], %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize 62 // CHECK-SANITIZE-CPP-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = icmp eq i1 %[[BASE_IS_NOT_NULLPTR]], %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize 63 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_DID_NOT_OVERFLOW:.*]] = xor i1 %[[OR_OV]], true, !nosanitize 64 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_UGE_BASE:.*]] = icmp uge i64 %[[COMPUTED_GEP]], %[[BASE_RELOADED_INT]], !nosanitize 65 // CHECK-SANITIZE-NEXT: %[[GEP_DID_NOT_OVERFLOW:.*]] = and i1 %[[COMPUTED_GEP_IS_UGE_BASE]], %[[COMPUTED_OFFSET_DID_NOT_OVERFLOW]], !nosanitize 66 // CHECK-SANITIZE-NEXT: %[[GEP_IS_OKAY:.*]] = and i1 %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL]], %[[GEP_DID_NOT_OVERFLOW]], !nosanitize 67 // CHECK-SANITIZE-NEXT: br i1 %[[GEP_IS_OKAY]], label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize 68 // CHECK-SANITIZE: [[HANDLER_POINTER_OVERFLOW]]: 69 // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_pointer_overflow_abort(i8* bitcast ({ {{{.*}}} }* @[[LINE_100]] to i8*), i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]]) 70 // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_pointer_overflow(i8* bitcast ({ {{{.*}}} }* @[[LINE_100]] to i8*), i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]]) 71 // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.ubsantrap(i8 19){{.*}}, !nosanitize 72 // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize 73 // CHECK-SANITIZE: [[CONT]]: 74 // CHECK-NEXT: ret i8* %[[ADD_PTR]] 75 #line 100 76 return base + offset; 77 } 78 79 char *var_zero(char *base) { 80 // CHECK: define{{.*}} i8* @var_zero(i8* noundef %[[BASE:.*]]) 81 // CHECK-NEXT: [[ENTRY:.*]]: 82 // CHECK-NEXT: %[[BASE_ADDR:.*]] = alloca i8*, align 8 83 // CHECK-NEXT: store i8* %[[BASE]], i8** %[[BASE_ADDR]], align 8 84 // CHECK-NEXT: %[[BASE_RELOADED:.*]] = load i8*, i8** %[[BASE_ADDR]], align 8 85 // CHECK-NEXT: %[[ADD_PTR:.*]] = getelementptr inbounds i8, i8* %[[BASE_RELOADED]], i64 0 86 // CHECK-SANITIZE-C-NEXT: %[[BASE_RELOADED_INT:.*]] = ptrtoint i8* %[[BASE_RELOADED]] to i64, !nosanitize 87 // CHECK-SANITIZE-C-NEXT: %[[COMPUTED_GEP:.*]] = add i64 %[[BASE_RELOADED_INT]], 0, !nosanitize 88 // CHECK-SANITIZE-C-NEXT: %[[BASE_IS_NOT_NULLPTR:.*]] = icmp ne i8* %[[BASE_RELOADED]], null, !nosanitize 89 // CHECK-SANITIZE-C-NEXT: %[[COMPUTED_GEP_IS_NOT_NULL:.*]] = icmp ne i64 %[[COMPUTED_GEP]], 0, !nosanitize 90 // CHECK-SANITIZE-C-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = and i1 %[[BASE_IS_NOT_NULLPTR]], %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize 91 // CHECK-SANITIZE-C-NEXT: %[[COMPUTED_GEP_IS_UGE_BASE:.*]] = icmp uge i64 %[[COMPUTED_GEP]], %[[BASE_RELOADED_INT]], !nosanitize 92 // CHECK-SANITIZE-C-NEXT: %[[AND_TRUE:.*]] = and i1 %[[COMPUTED_GEP_IS_UGE_BASE]], true, !nosanitize 93 // CHECK-SANITIZE-C-NEXT: %[[GEP_IS_OKAY:.*]] = and i1 %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL]], %[[AND_TRUE]], !nosanitize 94 // CHECK-SANITIZE-C-NEXT: br i1 %[[GEP_IS_OKAY]], label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize 95 // CHECK-SANITIZE-C: [[HANDLER_POINTER_OVERFLOW]]: 96 // CHECK-SANITIZE-NORECOVER-C-NEXT: call void @__ubsan_handle_pointer_overflow_abort(i8* bitcast ({ {{{.*}}} }* @[[LINE_200]] to i8*), i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]]) 97 // CHECK-SANITIZE-RECOVER-C-NEXT: call void @__ubsan_handle_pointer_overflow(i8* bitcast ({ {{{.*}}} }* @[[LINE_200]] to i8*), i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]]) 98 // CHECK-SANITIZE-TRAP-C-NEXT: call void @llvm.ubsantrap(i8 19){{.*}}, !nosanitize 99 // CHECK-SANITIZE-UNREACHABLE-C-NEXT: unreachable, !nosanitize 100 // CHECK-SANITIZE-C: [[CONT]]: 101 // CHECK-NEXT: ret i8* %[[ADD_PTR]] 102 static const unsigned long offset = 0; 103 #line 200 104 return base + offset; 105 } 106 107 char *var_one(char *base) { 108 // CHECK: define{{.*}} i8* @var_one(i8* noundef %[[BASE:.*]]) 109 // CHECK-NEXT: [[ENTRY:.*]]: 110 // CHECK-NEXT: %[[BASE_ADDR:.*]] = alloca i8*, align 8 111 // CHECK-NEXT: store i8* %[[BASE]], i8** %[[BASE_ADDR]], align 8 112 // CHECK-NEXT: %[[BASE_RELOADED:.*]] = load i8*, i8** %[[BASE_ADDR]], align 8 113 // CHECK-NEXT: %[[ADD_PTR:.*]] = getelementptr inbounds i8, i8* %[[BASE_RELOADED]], i64 1 114 // CHECK-SANITIZE-NEXT: %[[BASE_RELOADED_INT:.*]] = ptrtoint i8* %[[BASE_RELOADED]] to i64, !nosanitize 115 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP:.*]] = add i64 %[[BASE_RELOADED_INT]], 1, !nosanitize 116 // CHECK-SANITIZE-NEXT: %[[BASE_IS_NOT_NULLPTR:.*]] = icmp ne i8* %[[BASE_RELOADED]], null, !nosanitize 117 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_NOT_NULL:.*]] = icmp ne i64 %[[COMPUTED_GEP]], 0, !nosanitize 118 // CHECK-SANITIZE-C-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = and i1 %[[BASE_IS_NOT_NULLPTR]], %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize 119 // CHECK-SANITIZE-CPP-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = icmp eq i1 %[[BASE_IS_NOT_NULLPTR]], %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize 120 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_UGE_BASE:.*]] = icmp uge i64 %[[COMPUTED_GEP]], %[[BASE_RELOADED_INT]], !nosanitize 121 // CHECK-SANITIZE-NEXT: %[[AND_TRUE:.*]] = and i1 %[[COMPUTED_GEP_IS_UGE_BASE]], true, !nosanitize 122 // CHECK-SANITIZE-NEXT: %[[GEP_IS_OKAY:.*]] = and i1 %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL]], %[[AND_TRUE]], !nosanitize 123 // CHECK-SANITIZE-NEXT: br i1 %[[GEP_IS_OKAY]], label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize 124 // CHECK-SANITIZE: [[HANDLER_POINTER_OVERFLOW]]: 125 // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_pointer_overflow_abort(i8* bitcast ({ {{{.*}}} }* @[[LINE_300]] to i8*), i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]]) 126 // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_pointer_overflow(i8* bitcast ({ {{{.*}}} }* @[[LINE_300]] to i8*), i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]]) 127 // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.ubsantrap(i8 19){{.*}}, !nosanitize 128 // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize 129 // CHECK-SANITIZE: [[CONT]]: 130 // CHECK-NEXT: ret i8* %[[ADD_PTR]] 131 static const unsigned long offset = 1; 132 #line 300 133 return base + offset; 134 } 135 136 char *var_allones(char *base) { 137 // CHECK: define{{.*}} i8* @var_allones(i8* noundef %[[BASE:.*]]) 138 // CHECK-NEXT: [[ENTRY:.*]]: 139 // CHECK-NEXT: %[[BASE_ADDR:.*]] = alloca i8*, align 8 140 // CHECK-NEXT: store i8* %[[BASE]], i8** %[[BASE_ADDR]], align 8 141 // CHECK-NEXT: %[[BASE_RELOADED:.*]] = load i8*, i8** %[[BASE_ADDR]], align 8 142 // CHECK-NEXT: %[[ADD_PTR:.*]] = getelementptr inbounds i8, i8* %[[BASE_RELOADED]], i64 -1 143 // CHECK-SANITIZE-NEXT: %[[BASE_RELOADED_INT:.*]] = ptrtoint i8* %[[BASE_RELOADED]] to i64, !nosanitize 144 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP:.*]] = add i64 %[[BASE_RELOADED_INT]], -1, !nosanitize 145 // CHECK-SANITIZE-NEXT: %[[BASE_IS_NOT_NULLPTR:.*]] = icmp ne i8* %[[BASE_RELOADED]], null, !nosanitize 146 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_NOT_NULL:.*]] = icmp ne i64 %[[COMPUTED_GEP]], 0, !nosanitize 147 // CHECK-SANITIZE-C-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = and i1 %[[BASE_IS_NOT_NULLPTR]], %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize 148 // CHECK-SANITIZE-CPP-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = icmp eq i1 %[[BASE_IS_NOT_NULLPTR]], %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize 149 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_UGE_BASE:.*]] = icmp uge i64 %[[COMPUTED_GEP]], %[[BASE_RELOADED_INT]], !nosanitize 150 // CHECK-SANITIZE-NEXT: %[[AND_TRUE:.*]] = and i1 %[[COMPUTED_GEP_IS_UGE_BASE]], true, !nosanitize 151 // CHECK-SANITIZE-NEXT: %[[GEP_IS_OKAY:.*]] = and i1 %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL]], %[[AND_TRUE]], !nosanitize 152 // CHECK-SANITIZE-NEXT: br i1 %[[GEP_IS_OKAY]], label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize 153 // CHECK-SANITIZE: [[HANDLER_POINTER_OVERFLOW]]: 154 // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_pointer_overflow_abort(i8* bitcast ({ {{{.*}}} }* @[[LINE_400]] to i8*), i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]]) 155 // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_pointer_overflow(i8* bitcast ({ {{{.*}}} }* @[[LINE_400]] to i8*), i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]]) 156 // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.ubsantrap(i8 19){{.*}}, !nosanitize 157 // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize 158 // CHECK-SANITIZE: [[CONT]]: 159 // CHECK-NEXT: ret i8* %[[ADD_PTR]] 160 static const unsigned long offset = -1; 161 #line 400 162 return base + offset; 163 } 164 165 //------------------------------------------------------------------------------ 166 167 char *nullptr_var(unsigned long offset) { 168 // CHECK: define{{.*}} i8* @nullptr_var(i64 noundef %[[OFFSET:.*]]) 169 // CHECK-NEXT: [[ENTRY:.*]]: 170 // CHECK-NEXT: %[[OFFSET_ADDR:.*]] = alloca i64, align 8 171 // CHECK-NEXT: store i64 %[[OFFSET]], i64* %[[OFFSET_ADDR]], align 8 172 // CHECK-NEXT: %[[OFFSET_RELOADED:.*]] = load i64, i64* %[[OFFSET_ADDR]], align 8 173 // CHECK-NEXT: %[[ADD_PTR:.*]] = getelementptr inbounds i8, i8* null, i64 %[[OFFSET_RELOADED]] 174 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_AGGREGATE:.*]] = call { i64, i1 } @llvm.smul.with.overflow.i64(i64 1, i64 %[[OFFSET_RELOADED]]), !nosanitize 175 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_OVERFLOWED:.*]] = extractvalue { i64, i1 } %[[COMPUTED_OFFSET_AGGREGATE]], 1, !nosanitize 176 // CHECK-SANITIZE-NEXT: %[[OR_OV:.+]] = or i1 %[[COMPUTED_OFFSET_OVERFLOWED]], false, !nosanitize 177 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET:.*]] = extractvalue { i64, i1 } %[[COMPUTED_OFFSET_AGGREGATE]], 0, !nosanitize 178 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP:.*]] = add i64 0, %[[COMPUTED_OFFSET]], !nosanitize 179 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_NOT_NULL:.*]] = icmp ne i64 %[[COMPUTED_GEP]], 0, !nosanitize 180 // CHECK-SANITIZE-C-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = and i1 false, %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize 181 // CHECK-SANITIZE-CPP-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = icmp eq i1 false, %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize 182 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_DID_NOT_OVERFLOW:.*]] = xor i1 %[[OR_OV]], true, !nosanitize 183 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_UGE_BASE:.*]] = icmp uge i64 %[[COMPUTED_GEP]], 0, !nosanitize 184 // CHECK-SANITIZE-NEXT: %[[GEP_DID_NOT_OVERFLOW:.*]] = and i1 %[[COMPUTED_GEP_IS_UGE_BASE]], %[[COMPUTED_OFFSET_DID_NOT_OVERFLOW]], !nosanitize 185 // CHECK-SANITIZE-NEXT: %[[GEP_IS_OKAY:.*]] = and i1 %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL]], %[[GEP_DID_NOT_OVERFLOW]], !nosanitize 186 // CHECK-SANITIZE-NEXT: br i1 %[[GEP_IS_OKAY]], label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize 187 // CHECK-SANITIZE: [[HANDLER_POINTER_OVERFLOW]]: 188 // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_pointer_overflow_abort(i8* bitcast ({ {{{.*}}} }* @[[LINE_500]] to i8*), i64 0, i64 %[[COMPUTED_GEP]]) 189 // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_pointer_overflow(i8* bitcast ({ {{{.*}}} }* @[[LINE_500]] to i8*), i64 0, i64 %[[COMPUTED_GEP]]) 190 // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.ubsantrap(i8 19){{.*}}, !nosanitize 191 // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize 192 // CHECK-SANITIZE: [[CONT]]: 193 // CHECK-NEXT: ret i8* %[[ADD_PTR]] 194 static char *const base = (char *)0; 195 #line 500 196 return base + offset; 197 } 198 199 char *nullptr_zero() { 200 // CHECK: define{{.*}} i8* @nullptr_zero() 201 // CHECK-NEXT: [[ENTRY:.*]]: 202 // CHECK-SANITIZE-C-NEXT: br i1 false, label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize 203 // CHECK-SANITIZE-C: [[HANDLER_POINTER_OVERFLOW]]: 204 // CHECK-SANITIZE-NORECOVER-C-NEXT: call void @__ubsan_handle_pointer_overflow_abort(i8* bitcast ({ {{{.*}}} }* @[[LINE_600]] to i8*), i64 0, i64 0) 205 // CHECK-SANITIZE-RECOVER-C-NEXT: call void @__ubsan_handle_pointer_overflow(i8* bitcast ({ {{{.*}}} }* @[[LINE_600]] to i8*), i64 0, i64 0) 206 // CHECK-SANITIZE-TRAP-C-NEXT: call void @llvm.ubsantrap(i8 19){{.*}}, !nosanitize 207 // CHECK-SANITIZE-UNREACHABLE-C-NEXT: unreachable, !nosanitize 208 // CHECK-SANITIZE-C: [[CONT]]: 209 // CHECK-NEXT: ret i8* null 210 static char *const base = (char *)0; 211 static const unsigned long offset = 0; 212 #line 600 213 return base + offset; 214 } 215 216 char *nullptr_one_BAD() { 217 // CHECK: define{{.*}} i8* @nullptr_one_BAD() 218 // CHECK-NEXT: [[ENTRY:.*]]: 219 // CHECK-SANITIZE-C-NEXT: br i1 false, label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize 220 // CHECK-SANITIZE-CPP-NEXT: br i1 icmp eq (i64 ptrtoint (i8* getelementptr inbounds (i8, i8* null, i64 1) to i64), i64 0), label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize 221 // CHECK-SANITIZE: [[HANDLER_POINTER_OVERFLOW]]: 222 // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_pointer_overflow_abort(i8* bitcast ({ {{{.*}}} }* @[[LINE_700]] to i8*), i64 0, i64 ptrtoint (i8* getelementptr inbounds (i8, i8* null, i64 1) to i64)) 223 // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_pointer_overflow(i8* bitcast ({ {{{.*}}} }* @[[LINE_700]] to i8*), i64 0, i64 ptrtoint (i8* getelementptr inbounds (i8, i8* null, i64 1) to i64)) 224 // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.ubsantrap(i8 19){{.*}}, !nosanitize 225 // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize 226 // CHECK-SANITIZE: [[CONT]]: 227 // CHECK-NEXT: ret i8* getelementptr inbounds (i8, i8* null, i64 1) 228 static char *const base = (char *)0; 229 static const unsigned long offset = 1; 230 #line 700 231 return base + offset; 232 } 233 234 char *nullptr_allones_BAD() { 235 // CHECK: define{{.*}} i8* @nullptr_allones_BAD() 236 // CHECK-NEXT: [[ENTRY:.*]]: 237 // CHECK-SANITIZE-C-NEXT: br i1 false, label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize 238 // CHECK-SANITIZE-CPP-NEXT: br i1 icmp eq (i64 ptrtoint (i8* getelementptr inbounds (i8, i8* null, i64 -1) to i64), i64 0), label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize 239 // CHECK-SANITIZE: [[HANDLER_POINTER_OVERFLOW]]: 240 // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_pointer_overflow_abort(i8* bitcast ({ {{{.*}}} }* @[[LINE_800]] to i8*), i64 0, i64 ptrtoint (i8* getelementptr inbounds (i8, i8* null, i64 -1) to i64)) 241 // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_pointer_overflow(i8* bitcast ({ {{{.*}}} }* @[[LINE_800]] to i8*), i64 0, i64 ptrtoint (i8* getelementptr inbounds (i8, i8* null, i64 -1) to i64)) 242 // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.ubsantrap(i8 19){{.*}}, !nosanitize 243 // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize 244 // CHECK-SANITIZE: [[CONT]]: 245 // CHECK-NEXT: ret i8* getelementptr inbounds (i8, i8* null, i64 -1) 246 static char *const base = (char *)0; 247 static const unsigned long offset = -1; 248 #line 800 249 return base + offset; 250 } 251 252 //------------------------------------------------------------------------------ 253 254 char *one_var(unsigned long offset) { 255 // CHECK: define{{.*}} i8* @one_var(i64 noundef %[[OFFSET:.*]]) 256 // CHECK-NEXT: [[ENTRY:.*]]: 257 // CHECK-NEXT: %[[OFFSET_ADDR:.*]] = alloca i64, align 8 258 // CHECK-NEXT: store i64 %[[OFFSET]], i64* %[[OFFSET_ADDR]], align 8 259 // CHECK-NEXT: %[[OFFSET_RELOADED:.*]] = load i64, i64* %[[OFFSET_ADDR]], align 8 260 // CHECK-NEXT: %[[ADD_PTR:.*]] = getelementptr inbounds i8, i8* inttoptr (i64 1 to i8*), i64 %[[OFFSET_RELOADED]] 261 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_AGGREGATE:.*]] = call { i64, i1 } @llvm.smul.with.overflow.i64(i64 1, i64 %[[OFFSET_RELOADED]]), !nosanitize 262 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_OVERFLOWED:.*]] = extractvalue { i64, i1 } %[[COMPUTED_OFFSET_AGGREGATE]], 1, !nosanitize 263 // CHECK-SANITIZE-NEXT: %[[OR_OV:.+]] = or i1 %[[COMPUTED_OFFSET_OVERFLOWED]], false, !nosanitize 264 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET:.*]] = extractvalue { i64, i1 } %[[COMPUTED_OFFSET_AGGREGATE]], 0, !nosanitize 265 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP:.*]] = add i64 1, %[[COMPUTED_OFFSET]], !nosanitize 266 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_NOT_NULL:.*]] = icmp ne i64 %[[COMPUTED_GEP]], 0, !nosanitize 267 // CHECK-SANITIZE-C-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = and i1 icmp ne (i8* inttoptr (i64 1 to i8*), i8* null), %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize 268 // CHECK-SANITIZE-CPP-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = icmp eq i1 icmp ne (i8* inttoptr (i64 1 to i8*), i8* null), %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize 269 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_DID_NOT_OVERFLOW:.*]] = xor i1 %[[OR_OV]], true, !nosanitize 270 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_UGE_BASE:.*]] = icmp uge i64 %[[COMPUTED_GEP]], 1, !nosanitize 271 // CHECK-SANITIZE-NEXT: %[[GEP_DID_NOT_OVERFLOW:.*]] = and i1 %[[COMPUTED_GEP_IS_UGE_BASE]], %[[COMPUTED_OFFSET_DID_NOT_OVERFLOW]], !nosanitize 272 // CHECK-SANITIZE-NEXT: %[[GEP_IS_OKAY:.*]] = and i1 %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL]], %[[GEP_DID_NOT_OVERFLOW]], !nosanitize 273 // CHECK-SANITIZE-NEXT: br i1 %[[GEP_IS_OKAY]], label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize 274 // CHECK-SANITIZE: [[HANDLER_POINTER_OVERFLOW]]: 275 // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_pointer_overflow_abort(i8* bitcast ({ {{{.*}}} }* @[[LINE_900]] to i8*), i64 1, i64 %[[COMPUTED_GEP]]) 276 // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_pointer_overflow(i8* bitcast ({ {{{.*}}} }* @[[LINE_900]] to i8*), i64 1, i64 %[[COMPUTED_GEP]]) 277 // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.ubsantrap(i8 19){{.*}}, !nosanitize 278 // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize 279 // CHECK-SANITIZE: [[CONT]]: 280 // CHECK-NEXT: ret i8* %[[ADD_PTR]] 281 static char *const base = (char *)1; 282 #line 900 283 return base + offset; 284 } 285 286 char *one_zero() { 287 // CHECK: define{{.*}} i8* @one_zero() 288 // CHECK-NEXT: [[ENTRY:.*]]: 289 // CHECK-SANITIZE-C-NEXT: br i1 icmp ne (i8* inttoptr (i64 1 to i8*), i8* null), label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize 290 // CHECK-SANITIZE-C: [[HANDLER_POINTER_OVERFLOW]]: 291 // CHECK-SANITIZE-NORECOVER-C-NEXT: call void @__ubsan_handle_pointer_overflow_abort(i8* bitcast ({ {{{.*}}} }* @[[LINE_1000]] to i8*), i64 1, i64 1) 292 // CHECK-SANITIZE-RECOVER-C-NEXT: call void @__ubsan_handle_pointer_overflow(i8* bitcast ({ {{{.*}}} }* @[[LINE_1000]] to i8*), i64 1, i64 1) 293 // CHECK-SANITIZE-TRAP-C-NEXT: call void @llvm.ubsantrap(i8 19){{.*}}, !nosanitize 294 // CHECK-SANITIZE-UNREACHABLE-C-NEXT: unreachable, !nosanitize 295 // CHECK-SANITIZE-C: [[CONT]]: 296 // CHECK-NEXT: ret i8* inttoptr (i64 1 to i8*) 297 static char *const base = (char *)1; 298 static const unsigned long offset = 0; 299 #line 1000 300 return base + offset; 301 } 302 303 char *one_one_OK() { 304 // CHECK: define{{.*}} i8* @one_one_OK() 305 // CHECK-NEXT: [[ENTRY:.*]]: 306 // CHECK-SANITIZE-C-NEXT: br i1 and (i1 icmp ne (i8* inttoptr (i64 1 to i8*), i8* null), i1 icmp ne (i64 add (i64 sub (i64 ptrtoint (i8* getelementptr inbounds (i8, i8* inttoptr (i64 1 to i8*), i64 1) to i64), i64 1), i64 1), i64 0)), label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize 307 // CHECK-SANITIZE-CPP-NEXT: br i1 xor (i1 icmp eq (i8* inttoptr (i64 1 to i8*), i8* null), i1 icmp ne (i64 add (i64 sub (i64 ptrtoint (i8* getelementptr inbounds (i8, i8* inttoptr (i64 1 to i8*), i64 1) to i64), i64 1), i64 1), i64 0)), label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize 308 // CHECK-SANITIZE: [[HANDLER_POINTER_OVERFLOW]]: 309 // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_pointer_overflow_abort(i8* bitcast ({ {{{.*}}} }* @[[LINE_1100]] to i8*), i64 1, i64 add (i64 sub (i64 ptrtoint (i8* getelementptr inbounds (i8, i8* inttoptr (i64 1 to i8*), i64 1) to i64), i64 1), i64 1)) 310 // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_pointer_overflow(i8* bitcast ({ {{{.*}}} }* @[[LINE_1100]] to i8*), i64 1, i64 add (i64 sub (i64 ptrtoint (i8* getelementptr inbounds (i8, i8* inttoptr (i64 1 to i8*), i64 1) to i64), i64 1), i64 1)) 311 // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.ubsantrap(i8 19){{.*}}, !nosanitize 312 // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize 313 // CHECK-SANITIZE: [[CONT]]: 314 // CHECK-NEXT: ret i8* getelementptr inbounds (i8, i8* inttoptr (i64 1 to i8*), i64 1) 315 static char *const base = (char *)1; 316 static const unsigned long offset = 1; 317 #line 1100 318 return base + offset; 319 } 320 321 char *one_allones_BAD() { 322 // CHECK: define{{.*}} i8* @one_allones_BAD() 323 // CHECK-NEXT: [[ENTRY:.*]]: 324 // CHECK-SANITIZE-C-NEXT: br i1 and (i1 icmp ne (i8* inttoptr (i64 1 to i8*), i8* null), i1 icmp ne (i64 add (i64 sub (i64 ptrtoint (i8* getelementptr inbounds (i8, i8* inttoptr (i64 1 to i8*), i64 -1) to i64), i64 1), i64 1), i64 0)), label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize 325 // CHECK-SANITIZE-CPP-NEXT: br i1 xor (i1 icmp eq (i8* inttoptr (i64 1 to i8*), i8* null), i1 icmp ne (i64 add (i64 sub (i64 ptrtoint (i8* getelementptr inbounds (i8, i8* inttoptr (i64 1 to i8*), i64 -1) to i64), i64 1), i64 1), i64 0)), label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize 326 // CHECK-SANITIZE: [[HANDLER_POINTER_OVERFLOW]]: 327 // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_pointer_overflow_abort(i8* bitcast ({ {{{.*}}} }* @[[LINE_1200]] to i8*), i64 1, i64 add (i64 sub (i64 ptrtoint (i8* getelementptr inbounds (i8, i8* inttoptr (i64 1 to i8*), i64 -1) to i64), i64 1), i64 1)) 328 // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_pointer_overflow(i8* bitcast ({ {{{.*}}} }* @[[LINE_1200]] to i8*), i64 1, i64 add (i64 sub (i64 ptrtoint (i8* getelementptr inbounds (i8, i8* inttoptr (i64 1 to i8*), i64 -1) to i64), i64 1), i64 1)) 329 // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.ubsantrap(i8 19){{.*}}, !nosanitize 330 // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize 331 // CHECK-SANITIZE: [[CONT]]: 332 // CHECK-NEXT: ret i8* getelementptr inbounds (i8, i8* inttoptr (i64 1 to i8*), i64 -1) 333 static char *const base = (char *)1; 334 static const unsigned long offset = -1; 335 #line 1200 336 return base + offset; 337 } 338 339 //------------------------------------------------------------------------------ 340 341 char *allones_var(unsigned long offset) { 342 // CHECK: define{{.*}} i8* @allones_var(i64 noundef %[[OFFSET:.*]]) 343 // CHECK-NEXT: [[ENTRY:.*]]: 344 // CHECK-NEXT: %[[OFFSET_ADDR:.*]] = alloca i64, align 8 345 // CHECK-NEXT: store i64 %[[OFFSET]], i64* %[[OFFSET_ADDR]], align 8 346 // CHECK-NEXT: %[[OFFSET_RELOADED:.*]] = load i64, i64* %[[OFFSET_ADDR]], align 8 347 // CHECK-NEXT: %[[ADD_PTR:.*]] = getelementptr inbounds i8, i8* inttoptr (i64 -1 to i8*), i64 %[[OFFSET_RELOADED]] 348 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_AGGREGATE:.*]] = call { i64, i1 } @llvm.smul.with.overflow.i64(i64 1, i64 %[[OFFSET_RELOADED]]), !nosanitize 349 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_OVERFLOWED:.*]] = extractvalue { i64, i1 } %[[COMPUTED_OFFSET_AGGREGATE]], 1, !nosanitize 350 // CHECK-SANITIZE-NEXT: %[[OR_OV:.+]] = or i1 %[[COMPUTED_OFFSET_OVERFLOWED]], false, !nosanitize 351 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET:.*]] = extractvalue { i64, i1 } %[[COMPUTED_OFFSET_AGGREGATE]], 0, !nosanitize 352 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP:.*]] = add i64 -1, %[[COMPUTED_OFFSET]], !nosanitize 353 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_NOT_NULL:.*]] = icmp ne i64 %[[COMPUTED_GEP]], 0, !nosanitize 354 // CHECK-SANITIZE-C-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = and i1 icmp ne (i8* inttoptr (i64 -1 to i8*), i8* null), %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize 355 // CHECK-SANITIZE-CPP-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = icmp eq i1 icmp ne (i8* inttoptr (i64 -1 to i8*), i8* null), %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize 356 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_DID_NOT_OVERFLOW:.*]] = xor i1 %[[OR_OV]], true, !nosanitize 357 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_UGE_BASE:.*]] = icmp uge i64 %[[COMPUTED_GEP]], -1, !nosanitize 358 // CHECK-SANITIZE-NEXT: %[[GEP_DID_NOT_OVERFLOW:.*]] = and i1 %[[COMPUTED_GEP_IS_UGE_BASE]], %[[COMPUTED_OFFSET_DID_NOT_OVERFLOW]], !nosanitize 359 // CHECK-SANITIZE-NEXT: %[[GEP_IS_OKAY:.*]] = and i1 %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL]], %[[GEP_DID_NOT_OVERFLOW]], !nosanitize 360 // CHECK-SANITIZE-NEXT: br i1 %[[GEP_IS_OKAY]], label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize 361 // CHECK-SANITIZE: [[HANDLER_POINTER_OVERFLOW]]: 362 // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_pointer_overflow_abort(i8* bitcast ({ {{{.*}}} }* @[[LINE_1300]] to i8*), i64 -1, i64 %[[COMPUTED_GEP]]) 363 // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_pointer_overflow(i8* bitcast ({ {{{.*}}} }* @[[LINE_1300]] to i8*), i64 -1, i64 %[[COMPUTED_GEP]]) 364 // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.ubsantrap(i8 19){{.*}}, !nosanitize 365 // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize 366 // CHECK-SANITIZE: [[CONT]]: 367 // CHECK-NEXT: ret i8* %[[ADD_PTR]] 368 static char *const base = (char *)-1; 369 #line 1300 370 return base + offset; 371 } 372 373 char *allones_zero_OK() { 374 // CHECK: define{{.*}} i8* @allones_zero_OK() 375 // CHECK-NEXT: [[ENTRY:.*]]: 376 // CHECK-SANITIZE-C-NEXT: br i1 icmp ne (i8* inttoptr (i64 -1 to i8*), i8* null), label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize 377 // CHECK-SANITIZE-C: [[HANDLER_POINTER_OVERFLOW]]: 378 // CHECK-SANITIZE-NORECOVER-C-NEXT: call void @__ubsan_handle_pointer_overflow_abort(i8* bitcast ({ {{{.*}}} }* @[[LINE_1400]] to i8*), i64 -1, i64 -1) 379 // CHECK-SANITIZE-RECOVER-C-NEXT: call void @__ubsan_handle_pointer_overflow(i8* bitcast ({ {{{.*}}} }* @[[LINE_1400]] to i8*), i64 -1, i64 -1) 380 // CHECK-SANITIZE-TRAP-C-NEXT: call void @llvm.ubsantrap(i8 19){{.*}}, !nosanitize 381 // CHECK-SANITIZE-UNREACHABLE-C-NEXT: unreachable, !nosanitize 382 // CHECK-SANITIZE-C: [[CONT]]: 383 // CHECK-NEXT: ret i8* inttoptr (i64 -1 to i8*) 384 static char *const base = (char *)-1; 385 static const unsigned long offset = 0; 386 #line 1400 387 return base + offset; 388 } 389 390 char *allones_one_BAD() { 391 // CHECK: define{{.*}} i8* @allones_one_BAD() 392 // CHECK-NEXT: [[ENTRY:.*]]: 393 // CHECK-SANITIZE-C-NEXT: br i1 and (i1 icmp ne (i8* inttoptr (i64 -1 to i8*), i8* null), i1 icmp ne (i64 add (i64 sub (i64 ptrtoint (i8* getelementptr inbounds (i8, i8* inttoptr (i64 -1 to i8*), i64 1) to i64), i64 -1), i64 -1), i64 0)), label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize 394 // CHECK-SANITIZE-CPP-NEXT: br i1 xor (i1 icmp eq (i8* inttoptr (i64 -1 to i8*), i8* null), i1 icmp ne (i64 add (i64 sub (i64 ptrtoint (i8* getelementptr inbounds (i8, i8* inttoptr (i64 -1 to i8*), i64 1) to i64), i64 -1), i64 -1), i64 0)), label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize 395 // CHECK-SANITIZE: [[HANDLER_POINTER_OVERFLOW]]: 396 // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_pointer_overflow_abort(i8* bitcast ({ {{{.*}}} }* @[[LINE_1500]] to i8*), i64 -1, i64 add (i64 sub (i64 ptrtoint (i8* getelementptr inbounds (i8, i8* inttoptr (i64 -1 to i8*), i64 1) to i64), i64 -1), i64 -1)) 397 // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_pointer_overflow(i8* bitcast ({ {{{.*}}} }* @[[LINE_1500]] to i8*), i64 -1, i64 add (i64 sub (i64 ptrtoint (i8* getelementptr inbounds (i8, i8* inttoptr (i64 -1 to i8*), i64 1) to i64), i64 -1), i64 -1)) 398 // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.ubsantrap(i8 19){{.*}}, !nosanitize 399 // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize 400 // CHECK-SANITIZE: [[CONT]]: 401 // CHECK-NEXT: ret i8* getelementptr inbounds (i8, i8* inttoptr (i64 -1 to i8*), i64 1) 402 static char *const base = (char *)-1; 403 static const unsigned long offset = 1; 404 #line 1500 405 return base + offset; 406 } 407 408 char *allones_allones_OK() { 409 // CHECK: define{{.*}} i8* @allones_allones_OK() 410 // CHECK-NEXT: [[ENTRY:.*]]: 411 // CHECK-SANITIZE-C-NEXT: br i1 and (i1 icmp ne (i8* inttoptr (i64 -1 to i8*), i8* null), i1 icmp ne (i64 add (i64 sub (i64 ptrtoint (i8* getelementptr inbounds (i8, i8* inttoptr (i64 -1 to i8*), i64 -1) to i64), i64 -1), i64 -1), i64 0)), label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize 412 // CHECK-SANITIZE-CPP-NEXT: br i1 xor (i1 icmp eq (i8* inttoptr (i64 -1 to i8*), i8* null), i1 icmp ne (i64 add (i64 sub (i64 ptrtoint (i8* getelementptr inbounds (i8, i8* inttoptr (i64 -1 to i8*), i64 -1) to i64), i64 -1), i64 -1), i64 0)), label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize 413 // CHECK-SANITIZE: [[HANDLER_POINTER_OVERFLOW]]: 414 // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_pointer_overflow_abort(i8* bitcast ({ {{{.*}}} }* @[[LINE_1600]] to i8*), i64 -1, i64 add (i64 sub (i64 ptrtoint (i8* getelementptr inbounds (i8, i8* inttoptr (i64 -1 to i8*), i64 -1) to i64), i64 -1), i64 -1)) 415 // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_pointer_overflow(i8* bitcast ({ {{{.*}}} }* @[[LINE_1600]] to i8*), i64 -1, i64 add (i64 sub (i64 ptrtoint (i8* getelementptr inbounds (i8, i8* inttoptr (i64 -1 to i8*), i64 -1) to i64), i64 -1), i64 -1)) 416 // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.ubsantrap(i8 19){{.*}}, !nosanitize 417 // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize 418 // CHECK-SANITIZE: [[CONT]]: 419 // CHECK-NEXT: ret i8* getelementptr inbounds (i8, i8* inttoptr (i64 -1 to i8*), i64 -1) 420 static char *const base = (char *)-1; 421 static const unsigned long offset = -1; 422 #line 1600 423 return base + offset; 424 } 425 426 #ifdef __cplusplus 427 } 428 #endif 429