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