| // RUN: %clang_cc1 -x c -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s |
| // 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 |
| // 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 |
| // 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 |
| |
| // RUN: %clang_cc1 -x c++ -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s |
| // 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 |
| // 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 |
| // 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 |
| |
| // In C++/LLVM IR, if the base pointer evaluates to a null pointer value, |
| // the only valid pointer this inbounds GEP can produce is also a null pointer. |
| // Likewise, if we have non-zero base pointer, we can not get null pointer |
| // as a result, so the offset can not be -int(BasePtr). |
| |
| // So in other words, the offset can not change "null status" of the pointer, |
| // as in if the pointer was null, it can not become non-null, and vice versa, |
| // if it was non-null, it can not become null. |
| |
| // In C, however, offsetting null pointer is completely undefined, even by 0. |
| |
| // CHECK-SANITIZE-ANYRECOVER-DAG: @[[LINE_100:.*]] = {{.*}}, i32 100, i32 15 } } |
| // CHECK-SANITIZE-ANYRECOVER-C-DAG: @[[LINE_200:.*]] = {{.*}}, i32 200, i32 15 } } |
| // CHECK-SANITIZE-ANYRECOVER-DAG: @[[LINE_300:.*]] = {{.*}}, i32 300, i32 15 } } |
| // CHECK-SANITIZE-ANYRECOVER-DAG: @[[LINE_400:.*]] = {{.*}}, i32 400, i32 15 } } |
| // CHECK-SANITIZE-ANYRECOVER-DAG: @[[LINE_500:.*]] = {{.*}}, i32 500, i32 15 } } |
| // CHECK-SANITIZE-ANYRECOVER-C-DAG: @[[LINE_600:.*]] = {{.*}}, i32 600, i32 15 } } |
| // CHECK-SANITIZE-ANYRECOVER-DAG: @[[LINE_700:.*]] = {{.*}}, i32 700, i32 15 } } |
| // CHECK-SANITIZE-ANYRECOVER-DAG: @[[LINE_800:.*]] = {{.*}}, i32 800, i32 15 } } |
| // CHECK-SANITIZE-ANYRECOVER-DAG: @[[LINE_900:.*]] = {{.*}}, i32 900, i32 15 } } |
| // CHECK-SANITIZE-ANYRECOVER-C-DAG: @[[LINE_1000:.*]] = {{.*}}, i32 1000, i32 15 } } |
| // CHECK-SANITIZE-ANYRECOVER-DAG: @[[LINE_1100:.*]] = {{.*}}, i32 1100, i32 15 } } |
| // CHECK-SANITIZE-ANYRECOVER-DAG: @[[LINE_1200:.*]] = {{.*}}, i32 1200, i32 15 } } |
| // CHECK-SANITIZE-ANYRECOVER-DAG: @[[LINE_1300:.*]] = {{.*}}, i32 1300, i32 15 } } |
| // CHECK-SANITIZE-ANYRECOVER-C-DAG: @[[LINE_1400:.*]] = {{.*}}, i32 1400, i32 15 } } |
| // CHECK-SANITIZE-ANYRECOVER-DAG: @[[LINE_1500:.*]] = {{.*}}, i32 1500, i32 15 } } |
| // CHECK-SANITIZE-ANYRECOVER-DAG: @[[LINE_1600:.*]] = {{.*}}, i32 1600, i32 15 } } |
| // CHECK-SANITIZE-ANYRECOVER-DAG: @[[LINE_1700:.*]] = {{.*}}, i32 1700, i32 15 } } |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| char *var_var(char *base, unsigned long offset) { |
| // CHECK: define{{.*}} ptr @var_var(ptr noundef %[[BASE:.*]], i64 noundef %[[OFFSET:.*]]) |
| // CHECK-NEXT: [[ENTRY:.*]]: |
| // CHECK-NEXT: %[[BASE_ADDR:.*]] = alloca ptr, align 8 |
| // CHECK-NEXT: %[[OFFSET_ADDR:.*]] = alloca i64, align 8 |
| // CHECK-NEXT: store ptr %[[BASE]], ptr %[[BASE_ADDR]], align 8 |
| // CHECK-NEXT: store i64 %[[OFFSET]], ptr %[[OFFSET_ADDR]], align 8 |
| // CHECK-NEXT: %[[BASE_RELOADED:.*]] = load ptr, ptr %[[BASE_ADDR]], align 8 |
| // CHECK-NEXT: %[[OFFSET_RELOADED:.*]] = load i64, ptr %[[OFFSET_ADDR]], align 8 |
| // CHECK-NEXT: %[[ADD_PTR:.*]] = getelementptr inbounds i8, ptr %[[BASE_RELOADED]], i64 %[[OFFSET_RELOADED]] |
| // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_AGGREGATE:.*]] = call { i64, i1 } @llvm.smul.with.overflow.i64(i64 1, i64 %[[OFFSET_RELOADED]]), !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_OVERFLOWED:.*]] = extractvalue { i64, i1 } %[[COMPUTED_OFFSET_AGGREGATE]], 1, !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[OR_OV:.+]] = or i1 %[[COMPUTED_OFFSET_OVERFLOWED]], false, !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET:.*]] = extractvalue { i64, i1 } %[[COMPUTED_OFFSET_AGGREGATE]], 0, !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[BASE_RELOADED_INT:.*]] = ptrtoint ptr %[[BASE_RELOADED]] to i64, !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP:.*]] = add i64 %[[BASE_RELOADED_INT]], %[[COMPUTED_OFFSET]], !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[BASE_IS_NOT_NULLPTR:.*]] = icmp ne ptr %[[BASE_RELOADED]], null, !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_NOT_NULL:.*]] = icmp ne i64 %[[COMPUTED_GEP]], 0, !nosanitize |
| // CHECK-SANITIZE-C-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = and i1 %[[BASE_IS_NOT_NULLPTR]], %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize |
| // 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 |
| // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_DID_NOT_OVERFLOW:.*]] = xor i1 %[[OR_OV]], true, !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_UGE_BASE:.*]] = icmp uge i64 %[[COMPUTED_GEP]], %[[BASE_RELOADED_INT]], !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[GEP_DID_NOT_OVERFLOW:.*]] = and i1 %[[COMPUTED_GEP_IS_UGE_BASE]], %[[COMPUTED_OFFSET_DID_NOT_OVERFLOW]], !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[GEP_IS_OKAY:.*]] = and i1 %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL]], %[[GEP_DID_NOT_OVERFLOW]], !nosanitize |
| // CHECK-SANITIZE-NEXT: br i1 %[[GEP_IS_OKAY]], label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize |
| // CHECK-SANITIZE: [[HANDLER_POINTER_OVERFLOW]]: |
| // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_pointer_overflow_abort(ptr @[[LINE_100]], i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]]) |
| // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_pointer_overflow(ptr @[[LINE_100]], i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]]) |
| // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.ubsantrap(i8 19){{.*}}, !nosanitize |
| // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize |
| // CHECK-SANITIZE: [[CONT]]: |
| // CHECK-NEXT: ret ptr %[[ADD_PTR]] |
| #line 100 |
| return base + offset; |
| } |
| |
| char *var_zero(char *base) { |
| // CHECK: define{{.*}} ptr @var_zero(ptr noundef %[[BASE:.*]]) |
| // CHECK-NEXT: [[ENTRY:.*]]: |
| // CHECK-NEXT: %[[BASE_ADDR:.*]] = alloca ptr, align 8 |
| // CHECK-NEXT: store ptr %[[BASE]], ptr %[[BASE_ADDR]], align 8 |
| // CHECK-NEXT: %[[BASE_RELOADED:.*]] = load ptr, ptr %[[BASE_ADDR]], align 8 |
| // CHECK-NEXT: %[[ADD_PTR:.*]] = getelementptr inbounds i8, ptr %[[BASE_RELOADED]], i64 0 |
| // CHECK-SANITIZE-C-NEXT: %[[BASE_RELOADED_INT:.*]] = ptrtoint ptr %[[BASE_RELOADED]] to i64, !nosanitize |
| // CHECK-SANITIZE-C-NEXT: %[[COMPUTED_GEP:.*]] = add i64 %[[BASE_RELOADED_INT]], 0, !nosanitize |
| // CHECK-SANITIZE-C-NEXT: %[[BASE_IS_NOT_NULLPTR:.*]] = icmp ne ptr %[[BASE_RELOADED]], null, !nosanitize |
| // CHECK-SANITIZE-C-NEXT: %[[COMPUTED_GEP_IS_NOT_NULL:.*]] = icmp ne i64 %[[COMPUTED_GEP]], 0, !nosanitize |
| // CHECK-SANITIZE-C-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = and i1 %[[BASE_IS_NOT_NULLPTR]], %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize |
| // CHECK-SANITIZE-C-NEXT: %[[COMPUTED_GEP_IS_UGE_BASE:.*]] = icmp uge i64 %[[COMPUTED_GEP]], %[[BASE_RELOADED_INT]], !nosanitize |
| // CHECK-SANITIZE-C-NEXT: %[[AND_TRUE:.*]] = and i1 %[[COMPUTED_GEP_IS_UGE_BASE]], true, !nosanitize |
| // CHECK-SANITIZE-C-NEXT: %[[GEP_IS_OKAY:.*]] = and i1 %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL]], %[[AND_TRUE]], !nosanitize |
| // CHECK-SANITIZE-C-NEXT: br i1 %[[GEP_IS_OKAY]], label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize |
| // CHECK-SANITIZE-C: [[HANDLER_POINTER_OVERFLOW]]: |
| // CHECK-SANITIZE-NORECOVER-C-NEXT: call void @__ubsan_handle_pointer_overflow_abort(ptr @[[LINE_200]], i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]]) |
| // CHECK-SANITIZE-RECOVER-C-NEXT: call void @__ubsan_handle_pointer_overflow(ptr @[[LINE_200]], i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]]) |
| // CHECK-SANITIZE-TRAP-C-NEXT: call void @llvm.ubsantrap(i8 19){{.*}}, !nosanitize |
| // CHECK-SANITIZE-UNREACHABLE-C-NEXT: unreachable, !nosanitize |
| // CHECK-SANITIZE-C: [[CONT]]: |
| // CHECK-NEXT: ret ptr %[[ADD_PTR]] |
| static const unsigned long offset = 0; |
| #line 200 |
| return base + offset; |
| } |
| |
| char *var_one(char *base) { |
| // CHECK: define{{.*}} ptr @var_one(ptr noundef %[[BASE:.*]]) |
| // CHECK-NEXT: [[ENTRY:.*]]: |
| // CHECK-NEXT: %[[BASE_ADDR:.*]] = alloca ptr, align 8 |
| // CHECK-NEXT: store ptr %[[BASE]], ptr %[[BASE_ADDR]], align 8 |
| // CHECK-NEXT: %[[BASE_RELOADED:.*]] = load ptr, ptr %[[BASE_ADDR]], align 8 |
| // CHECK-NEXT: %[[ADD_PTR:.*]] = getelementptr inbounds i8, ptr %[[BASE_RELOADED]], i64 1 |
| // CHECK-SANITIZE-NEXT: %[[BASE_RELOADED_INT:.*]] = ptrtoint ptr %[[BASE_RELOADED]] to i64, !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP:.*]] = add i64 %[[BASE_RELOADED_INT]], 1, !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[BASE_IS_NOT_NULLPTR:.*]] = icmp ne ptr %[[BASE_RELOADED]], null, !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_NOT_NULL:.*]] = icmp ne i64 %[[COMPUTED_GEP]], 0, !nosanitize |
| // CHECK-SANITIZE-C-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = and i1 %[[BASE_IS_NOT_NULLPTR]], %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize |
| // 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 |
| // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_UGE_BASE:.*]] = icmp uge i64 %[[COMPUTED_GEP]], %[[BASE_RELOADED_INT]], !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[AND_TRUE:.*]] = and i1 %[[COMPUTED_GEP_IS_UGE_BASE]], true, !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[GEP_IS_OKAY:.*]] = and i1 %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL]], %[[AND_TRUE]], !nosanitize |
| // CHECK-SANITIZE-NEXT: br i1 %[[GEP_IS_OKAY]], label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize |
| // CHECK-SANITIZE: [[HANDLER_POINTER_OVERFLOW]]: |
| // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_pointer_overflow_abort(ptr @[[LINE_300]], i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]]) |
| // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_pointer_overflow(ptr @[[LINE_300]], i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]]) |
| // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.ubsantrap(i8 19){{.*}}, !nosanitize |
| // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize |
| // CHECK-SANITIZE: [[CONT]]: |
| // CHECK-NEXT: ret ptr %[[ADD_PTR]] |
| static const unsigned long offset = 1; |
| #line 300 |
| return base + offset; |
| } |
| |
| char *var_allones(char *base) { |
| // CHECK: define{{.*}} ptr @var_allones(ptr noundef %[[BASE:.*]]) |
| // CHECK-NEXT: [[ENTRY:.*]]: |
| // CHECK-NEXT: %[[BASE_ADDR:.*]] = alloca ptr, align 8 |
| // CHECK-NEXT: store ptr %[[BASE]], ptr %[[BASE_ADDR]], align 8 |
| // CHECK-NEXT: %[[BASE_RELOADED:.*]] = load ptr, ptr %[[BASE_ADDR]], align 8 |
| // CHECK-NEXT: %[[ADD_PTR:.*]] = getelementptr inbounds i8, ptr %[[BASE_RELOADED]], i64 -1 |
| // CHECK-SANITIZE-NEXT: %[[BASE_RELOADED_INT:.*]] = ptrtoint ptr %[[BASE_RELOADED]] to i64, !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP:.*]] = add i64 %[[BASE_RELOADED_INT]], -1, !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[BASE_IS_NOT_NULLPTR:.*]] = icmp ne ptr %[[BASE_RELOADED]], null, !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_NOT_NULL:.*]] = icmp ne i64 %[[COMPUTED_GEP]], 0, !nosanitize |
| // CHECK-SANITIZE-C-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = and i1 %[[BASE_IS_NOT_NULLPTR]], %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize |
| // 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 |
| // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_UGE_BASE:.*]] = icmp uge i64 %[[COMPUTED_GEP]], %[[BASE_RELOADED_INT]], !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[AND_TRUE:.*]] = and i1 %[[COMPUTED_GEP_IS_UGE_BASE]], true, !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[GEP_IS_OKAY:.*]] = and i1 %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL]], %[[AND_TRUE]], !nosanitize |
| // CHECK-SANITIZE-NEXT: br i1 %[[GEP_IS_OKAY]], label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize |
| // CHECK-SANITIZE: [[HANDLER_POINTER_OVERFLOW]]: |
| // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_pointer_overflow_abort(ptr @[[LINE_400]], i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]]) |
| // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_pointer_overflow(ptr @[[LINE_400]], i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]]) |
| // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.ubsantrap(i8 19){{.*}}, !nosanitize |
| // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize |
| // CHECK-SANITIZE: [[CONT]]: |
| // CHECK-NEXT: ret ptr %[[ADD_PTR]] |
| static const unsigned long offset = -1; |
| #line 400 |
| return base + offset; |
| } |
| |
| //------------------------------------------------------------------------------ |
| |
| char *nullptr_var(unsigned long offset) { |
| // CHECK: define{{.*}} ptr @nullptr_var(i64 noundef %[[OFFSET:.*]]) |
| // CHECK-NEXT: [[ENTRY:.*]]: |
| // CHECK-NEXT: %[[OFFSET_ADDR:.*]] = alloca i64, align 8 |
| // CHECK-NEXT: store i64 %[[OFFSET]], ptr %[[OFFSET_ADDR]], align 8 |
| // CHECK-NEXT: %[[OFFSET_RELOADED:.*]] = load i64, ptr %[[OFFSET_ADDR]], align 8 |
| // CHECK-NEXT: %[[ADD_PTR:.*]] = getelementptr inbounds i8, ptr null, i64 %[[OFFSET_RELOADED]] |
| // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_AGGREGATE:.*]] = call { i64, i1 } @llvm.smul.with.overflow.i64(i64 1, i64 %[[OFFSET_RELOADED]]), !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_OVERFLOWED:.*]] = extractvalue { i64, i1 } %[[COMPUTED_OFFSET_AGGREGATE]], 1, !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[OR_OV:.+]] = or i1 %[[COMPUTED_OFFSET_OVERFLOWED]], false, !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET:.*]] = extractvalue { i64, i1 } %[[COMPUTED_OFFSET_AGGREGATE]], 0, !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP:.*]] = add i64 0, %[[COMPUTED_OFFSET]], !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_NOT_NULL:.*]] = icmp ne i64 %[[COMPUTED_GEP]], 0, !nosanitize |
| // CHECK-SANITIZE-C-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = and i1 false, %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize |
| // CHECK-SANITIZE-CPP-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = icmp eq i1 false, %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_DID_NOT_OVERFLOW:.*]] = xor i1 %[[OR_OV]], true, !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_UGE_BASE:.*]] = icmp uge i64 %[[COMPUTED_GEP]], 0, !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[GEP_DID_NOT_OVERFLOW:.*]] = and i1 %[[COMPUTED_GEP_IS_UGE_BASE]], %[[COMPUTED_OFFSET_DID_NOT_OVERFLOW]], !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[GEP_IS_OKAY:.*]] = and i1 %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL]], %[[GEP_DID_NOT_OVERFLOW]], !nosanitize |
| // CHECK-SANITIZE-NEXT: br i1 %[[GEP_IS_OKAY]], label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize |
| // CHECK-SANITIZE: [[HANDLER_POINTER_OVERFLOW]]: |
| // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_pointer_overflow_abort(ptr @[[LINE_500]], i64 0, i64 %[[COMPUTED_GEP]]) |
| // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_pointer_overflow(ptr @[[LINE_500]], i64 0, i64 %[[COMPUTED_GEP]]) |
| // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.ubsantrap(i8 19){{.*}}, !nosanitize |
| // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize |
| // CHECK-SANITIZE: [[CONT]]: |
| // CHECK-NEXT: ret ptr %[[ADD_PTR]] |
| static char *const base = (char *)0; |
| #line 500 |
| return base + offset; |
| } |
| |
| char *nullptr_zero(void) { |
| // CHECK: define{{.*}} ptr @nullptr_zero() |
| // CHECK-NEXT: [[ENTRY:.*]]: |
| // CHECK-SANITIZE-C-NEXT: br i1 false, label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize |
| // CHECK-SANITIZE-C: [[HANDLER_POINTER_OVERFLOW]]: |
| // CHECK-SANITIZE-NORECOVER-C-NEXT: call void @__ubsan_handle_pointer_overflow_abort(ptr @[[LINE_600]], i64 0, i64 0) |
| // CHECK-SANITIZE-RECOVER-C-NEXT: call void @__ubsan_handle_pointer_overflow(ptr @[[LINE_600]], i64 0, i64 0) |
| // CHECK-SANITIZE-TRAP-C-NEXT: call void @llvm.ubsantrap(i8 19){{.*}}, !nosanitize |
| // CHECK-SANITIZE-UNREACHABLE-C-NEXT: unreachable, !nosanitize |
| // CHECK-SANITIZE-C: [[CONT]]: |
| // CHECK-NEXT: ret ptr null |
| static char *const base = (char *)0; |
| static const unsigned long offset = 0; |
| #line 600 |
| return base + offset; |
| } |
| |
| char *nullptr_one_BAD(void) { |
| // CHECK: define{{.*}} ptr @nullptr_one_BAD() |
| // CHECK-NEXT: [[ENTRY:.*]]: |
| // CHECK-SANITIZE-C-NEXT: br i1 false, label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize |
| // CHECK-SANITIZE-CPP-NEXT: br i1 icmp eq (i64 ptrtoint (ptr getelementptr inbounds (i8, ptr null, i64 1) to i64), i64 0), label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize |
| // CHECK-SANITIZE: [[HANDLER_POINTER_OVERFLOW]]: |
| // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_pointer_overflow_abort(ptr @[[LINE_700]], i64 0, i64 ptrtoint (ptr getelementptr inbounds (i8, ptr null, i64 1) to i64)) |
| // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_pointer_overflow(ptr @[[LINE_700]], i64 0, i64 ptrtoint (ptr getelementptr inbounds (i8, ptr null, i64 1) to i64)) |
| // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.ubsantrap(i8 19){{.*}}, !nosanitize |
| // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize |
| // CHECK-SANITIZE: [[CONT]]: |
| // CHECK-NEXT: ret ptr getelementptr inbounds (i8, ptr null, i64 1) |
| static char *const base = (char *)0; |
| static const unsigned long offset = 1; |
| #line 700 |
| return base + offset; |
| } |
| |
| char *nullptr_allones_BAD(void) { |
| // CHECK: define{{.*}} ptr @nullptr_allones_BAD() |
| // CHECK-NEXT: [[ENTRY:.*]]: |
| // CHECK-SANITIZE-C-NEXT: br i1 false, label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize |
| // CHECK-SANITIZE-CPP-NEXT: br i1 icmp eq (i64 ptrtoint (ptr getelementptr inbounds (i8, ptr null, i64 -1) to i64), i64 0), label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize |
| // CHECK-SANITIZE: [[HANDLER_POINTER_OVERFLOW]]: |
| // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_pointer_overflow_abort(ptr @[[LINE_800]], i64 0, i64 ptrtoint (ptr getelementptr inbounds (i8, ptr null, i64 -1) to i64)) |
| // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_pointer_overflow(ptr @[[LINE_800]], i64 0, i64 ptrtoint (ptr getelementptr inbounds (i8, ptr null, i64 -1) to i64)) |
| // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.ubsantrap(i8 19){{.*}}, !nosanitize |
| // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize |
| // CHECK-SANITIZE: [[CONT]]: |
| // CHECK-NEXT: ret ptr getelementptr inbounds (i8, ptr null, i64 -1) |
| static char *const base = (char *)0; |
| static const unsigned long offset = -1; |
| #line 800 |
| return base + offset; |
| } |
| |
| //------------------------------------------------------------------------------ |
| |
| char *one_var(unsigned long offset) { |
| // CHECK: define{{.*}} ptr @one_var(i64 noundef %[[OFFSET:.*]]) |
| // CHECK-NEXT: [[ENTRY:.*]]: |
| // CHECK-NEXT: %[[OFFSET_ADDR:.*]] = alloca i64, align 8 |
| // CHECK-NEXT: store i64 %[[OFFSET]], ptr %[[OFFSET_ADDR]], align 8 |
| // CHECK-NEXT: %[[OFFSET_RELOADED:.*]] = load i64, ptr %[[OFFSET_ADDR]], align 8 |
| // CHECK-NEXT: %[[ADD_PTR:.*]] = getelementptr inbounds i8, ptr inttoptr (i64 1 to ptr), i64 %[[OFFSET_RELOADED]] |
| // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_AGGREGATE:.*]] = call { i64, i1 } @llvm.smul.with.overflow.i64(i64 1, i64 %[[OFFSET_RELOADED]]), !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_OVERFLOWED:.*]] = extractvalue { i64, i1 } %[[COMPUTED_OFFSET_AGGREGATE]], 1, !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[OR_OV:.+]] = or i1 %[[COMPUTED_OFFSET_OVERFLOWED]], false, !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET:.*]] = extractvalue { i64, i1 } %[[COMPUTED_OFFSET_AGGREGATE]], 0, !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP:.*]] = add i64 1, %[[COMPUTED_OFFSET]], !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_NOT_NULL:.*]] = icmp ne i64 %[[COMPUTED_GEP]], 0, !nosanitize |
| // CHECK-SANITIZE-C-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = and i1 icmp ne (ptr inttoptr (i64 1 to ptr), ptr null), %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize |
| // CHECK-SANITIZE-CPP-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = icmp eq i1 icmp ne (ptr inttoptr (i64 1 to ptr), ptr null), %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_DID_NOT_OVERFLOW:.*]] = xor i1 %[[OR_OV]], true, !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_UGE_BASE:.*]] = icmp uge i64 %[[COMPUTED_GEP]], 1, !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[GEP_DID_NOT_OVERFLOW:.*]] = and i1 %[[COMPUTED_GEP_IS_UGE_BASE]], %[[COMPUTED_OFFSET_DID_NOT_OVERFLOW]], !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[GEP_IS_OKAY:.*]] = and i1 %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL]], %[[GEP_DID_NOT_OVERFLOW]], !nosanitize |
| // CHECK-SANITIZE-NEXT: br i1 %[[GEP_IS_OKAY]], label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize |
| // CHECK-SANITIZE: [[HANDLER_POINTER_OVERFLOW]]: |
| // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_pointer_overflow_abort(ptr @[[LINE_900]], i64 1, i64 %[[COMPUTED_GEP]]) |
| // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_pointer_overflow(ptr @[[LINE_900]], i64 1, i64 %[[COMPUTED_GEP]]) |
| // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.ubsantrap(i8 19){{.*}}, !nosanitize |
| // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize |
| // CHECK-SANITIZE: [[CONT]]: |
| // CHECK-NEXT: ret ptr %[[ADD_PTR]] |
| static char *const base = (char *)1; |
| #line 900 |
| return base + offset; |
| } |
| |
| char *one_zero(void) { |
| // CHECK: define{{.*}} ptr @one_zero() |
| // CHECK-NEXT: [[ENTRY:.*]]: |
| // CHECK-SANITIZE-C-NEXT: br i1 icmp ne (ptr inttoptr (i64 1 to ptr), ptr null), label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize |
| // CHECK-SANITIZE-C: [[HANDLER_POINTER_OVERFLOW]]: |
| // CHECK-SANITIZE-NORECOVER-C-NEXT: call void @__ubsan_handle_pointer_overflow_abort(ptr @[[LINE_1000]], i64 1, i64 1) |
| // CHECK-SANITIZE-RECOVER-C-NEXT: call void @__ubsan_handle_pointer_overflow(ptr @[[LINE_1000]], i64 1, i64 1) |
| // CHECK-SANITIZE-TRAP-C-NEXT: call void @llvm.ubsantrap(i8 19){{.*}}, !nosanitize |
| // CHECK-SANITIZE-UNREACHABLE-C-NEXT: unreachable, !nosanitize |
| // CHECK-SANITIZE-C: [[CONT]]: |
| // CHECK-NEXT: ret ptr inttoptr (i64 1 to ptr) |
| static char *const base = (char *)1; |
| static const unsigned long offset = 0; |
| #line 1000 |
| return base + offset; |
| } |
| |
| char *one_one_OK(void) { |
| // CHECK: define{{.*}} ptr @one_one_OK() |
| // CHECK-NEXT: [[ENTRY:.*]]: |
| // CHECK-SANITIZE-C-NEXT: %[[AND:.*]] = and i1 icmp ne (ptr inttoptr (i64 1 to ptr), ptr null), icmp ne (i64 add (i64 sub (i64 ptrtoint (ptr getelementptr inbounds (i8, ptr inttoptr (i64 1 to ptr), i64 1) to i64), i64 1), i64 1), i64 0), !nosanitize |
| // CHECK-SANITIZE-C-NEXT: br i1 %[[AND]], label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize |
| // CHECK-SANITIZE-CPP-NEXT: br i1 xor (i1 icmp eq (ptr inttoptr (i64 1 to ptr), ptr null), i1 icmp ne (i64 add (i64 sub (i64 ptrtoint (ptr getelementptr inbounds (i8, ptr inttoptr (i64 1 to ptr), i64 1) to i64), i64 1), i64 1), i64 0)), label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize |
| // CHECK-SANITIZE: [[HANDLER_POINTER_OVERFLOW]]: |
| // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_pointer_overflow_abort(ptr @[[LINE_1100]], i64 1, i64 add (i64 sub (i64 ptrtoint (ptr getelementptr inbounds (i8, ptr inttoptr (i64 1 to ptr), i64 1) to i64), i64 1), i64 1)) |
| // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_pointer_overflow(ptr @[[LINE_1100]], i64 1, i64 add (i64 sub (i64 ptrtoint (ptr getelementptr inbounds (i8, ptr inttoptr (i64 1 to ptr), i64 1) to i64), i64 1), i64 1)) |
| // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.ubsantrap(i8 19){{.*}}, !nosanitize |
| // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize |
| // CHECK-SANITIZE: [[CONT]]: |
| // CHECK-NEXT: ret ptr getelementptr inbounds (i8, ptr inttoptr (i64 1 to ptr), i64 1) |
| static char *const base = (char *)1; |
| static const unsigned long offset = 1; |
| #line 1100 |
| return base + offset; |
| } |
| |
| char *one_allones_BAD(void) { |
| // CHECK: define{{.*}} ptr @one_allones_BAD() |
| // CHECK-NEXT: [[ENTRY:.*]]: |
| // CHECK-SANITIZE-C-NEXT: %[[AND:.*]] = and i1 icmp ne (ptr inttoptr (i64 1 to ptr), ptr null), icmp ne (i64 add (i64 sub (i64 ptrtoint (ptr getelementptr inbounds (i8, ptr inttoptr (i64 1 to ptr), i64 -1) to i64), i64 1), i64 1), i64 0), !nosanitize |
| // CHECK-SANITIZE-C-NEXT: br i1 %[[AND]], label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize |
| // CHECK-SANITIZE-CPP-NEXT: br i1 xor (i1 icmp eq (ptr inttoptr (i64 1 to ptr), ptr null), i1 icmp ne (i64 add (i64 sub (i64 ptrtoint (ptr getelementptr inbounds (i8, ptr inttoptr (i64 1 to ptr), i64 -1) to i64), i64 1), i64 1), i64 0)), label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize |
| // CHECK-SANITIZE: [[HANDLER_POINTER_OVERFLOW]]: |
| // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_pointer_overflow_abort(ptr @[[LINE_1200]], i64 1, i64 add (i64 sub (i64 ptrtoint (ptr getelementptr inbounds (i8, ptr inttoptr (i64 1 to ptr), i64 -1) to i64), i64 1), i64 1)) |
| // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_pointer_overflow(ptr @[[LINE_1200]], i64 1, i64 add (i64 sub (i64 ptrtoint (ptr getelementptr inbounds (i8, ptr inttoptr (i64 1 to ptr), i64 -1) to i64), i64 1), i64 1)) |
| // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.ubsantrap(i8 19){{.*}}, !nosanitize |
| // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize |
| // CHECK-SANITIZE: [[CONT]]: |
| // CHECK-NEXT: ret ptr getelementptr inbounds (i8, ptr inttoptr (i64 1 to ptr), i64 -1) |
| static char *const base = (char *)1; |
| static const unsigned long offset = -1; |
| #line 1200 |
| return base + offset; |
| } |
| |
| //------------------------------------------------------------------------------ |
| |
| char *allones_var(unsigned long offset) { |
| // CHECK: define{{.*}} ptr @allones_var(i64 noundef %[[OFFSET:.*]]) |
| // CHECK-NEXT: [[ENTRY:.*]]: |
| // CHECK-NEXT: %[[OFFSET_ADDR:.*]] = alloca i64, align 8 |
| // CHECK-NEXT: store i64 %[[OFFSET]], ptr %[[OFFSET_ADDR]], align 8 |
| // CHECK-NEXT: %[[OFFSET_RELOADED:.*]] = load i64, ptr %[[OFFSET_ADDR]], align 8 |
| // CHECK-NEXT: %[[ADD_PTR:.*]] = getelementptr inbounds i8, ptr inttoptr (i64 -1 to ptr), i64 %[[OFFSET_RELOADED]] |
| // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_AGGREGATE:.*]] = call { i64, i1 } @llvm.smul.with.overflow.i64(i64 1, i64 %[[OFFSET_RELOADED]]), !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_OVERFLOWED:.*]] = extractvalue { i64, i1 } %[[COMPUTED_OFFSET_AGGREGATE]], 1, !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[OR_OV:.+]] = or i1 %[[COMPUTED_OFFSET_OVERFLOWED]], false, !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET:.*]] = extractvalue { i64, i1 } %[[COMPUTED_OFFSET_AGGREGATE]], 0, !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP:.*]] = add i64 -1, %[[COMPUTED_OFFSET]], !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_NOT_NULL:.*]] = icmp ne i64 %[[COMPUTED_GEP]], 0, !nosanitize |
| // CHECK-SANITIZE-C-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = and i1 icmp ne (ptr inttoptr (i64 -1 to ptr), ptr null), %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize |
| // CHECK-SANITIZE-CPP-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = icmp eq i1 icmp ne (ptr inttoptr (i64 -1 to ptr), ptr null), %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_DID_NOT_OVERFLOW:.*]] = xor i1 %[[OR_OV]], true, !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_UGE_BASE:.*]] = icmp uge i64 %[[COMPUTED_GEP]], -1, !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[GEP_DID_NOT_OVERFLOW:.*]] = and i1 %[[COMPUTED_GEP_IS_UGE_BASE]], %[[COMPUTED_OFFSET_DID_NOT_OVERFLOW]], !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[GEP_IS_OKAY:.*]] = and i1 %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL]], %[[GEP_DID_NOT_OVERFLOW]], !nosanitize |
| // CHECK-SANITIZE-NEXT: br i1 %[[GEP_IS_OKAY]], label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize |
| // CHECK-SANITIZE: [[HANDLER_POINTER_OVERFLOW]]: |
| // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_pointer_overflow_abort(ptr @[[LINE_1300]], i64 -1, i64 %[[COMPUTED_GEP]]) |
| // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_pointer_overflow(ptr @[[LINE_1300]], i64 -1, i64 %[[COMPUTED_GEP]]) |
| // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.ubsantrap(i8 19){{.*}}, !nosanitize |
| // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize |
| // CHECK-SANITIZE: [[CONT]]: |
| // CHECK-NEXT: ret ptr %[[ADD_PTR]] |
| static char *const base = (char *)-1; |
| #line 1300 |
| return base + offset; |
| } |
| |
| char *allones_zero_OK(void) { |
| // CHECK: define{{.*}} ptr @allones_zero_OK() |
| // CHECK-NEXT: [[ENTRY:.*]]: |
| // CHECK-SANITIZE-C-NEXT: br i1 icmp ne (ptr inttoptr (i64 -1 to ptr), ptr null), label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize |
| // CHECK-SANITIZE-C: [[HANDLER_POINTER_OVERFLOW]]: |
| // CHECK-SANITIZE-NORECOVER-C-NEXT: call void @__ubsan_handle_pointer_overflow_abort(ptr @[[LINE_1400]], i64 -1, i64 -1) |
| // CHECK-SANITIZE-RECOVER-C-NEXT: call void @__ubsan_handle_pointer_overflow(ptr @[[LINE_1400]], i64 -1, i64 -1) |
| // CHECK-SANITIZE-TRAP-C-NEXT: call void @llvm.ubsantrap(i8 19){{.*}}, !nosanitize |
| // CHECK-SANITIZE-UNREACHABLE-C-NEXT: unreachable, !nosanitize |
| // CHECK-SANITIZE-C: [[CONT]]: |
| // CHECK-NEXT: ret ptr inttoptr (i64 -1 to ptr) |
| static char *const base = (char *)-1; |
| static const unsigned long offset = 0; |
| #line 1400 |
| return base + offset; |
| } |
| |
| char *allones_one_BAD(void) { |
| // CHECK: define{{.*}} ptr @allones_one_BAD() |
| // CHECK-NEXT: [[ENTRY:.*]]: |
| // CHECK-SANITIZE-C-NEXT: %[[AND:.*]] = and i1 icmp ne (ptr inttoptr (i64 -1 to ptr), ptr null), icmp ne (i64 add (i64 sub (i64 ptrtoint (ptr getelementptr inbounds (i8, ptr inttoptr (i64 -1 to ptr), i64 1) to i64), i64 -1), i64 -1), i64 0), !nosanitize |
| // CHECK-SANITIZE-C-NEXT: br i1 %[[AND]], label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize |
| // CHECK-SANITIZE-CPP-NEXT: br i1 xor (i1 icmp eq (ptr inttoptr (i64 -1 to ptr), ptr null), i1 icmp ne (i64 add (i64 sub (i64 ptrtoint (ptr getelementptr inbounds (i8, ptr inttoptr (i64 -1 to ptr), i64 1) to i64), i64 -1), i64 -1), i64 0)), label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize |
| // CHECK-SANITIZE: [[HANDLER_POINTER_OVERFLOW]]: |
| // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_pointer_overflow_abort(ptr @[[LINE_1500]], i64 -1, i64 add (i64 sub (i64 ptrtoint (ptr getelementptr inbounds (i8, ptr inttoptr (i64 -1 to ptr), i64 1) to i64), i64 -1), i64 -1)) |
| // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_pointer_overflow(ptr @[[LINE_1500]], i64 -1, i64 add (i64 sub (i64 ptrtoint (ptr getelementptr inbounds (i8, ptr inttoptr (i64 -1 to ptr), i64 1) to i64), i64 -1), i64 -1)) |
| // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.ubsantrap(i8 19){{.*}}, !nosanitize |
| // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize |
| // CHECK-SANITIZE: [[CONT]]: |
| // CHECK-NEXT: ret ptr getelementptr inbounds (i8, ptr inttoptr (i64 -1 to ptr), i64 1) |
| static char *const base = (char *)-1; |
| static const unsigned long offset = 1; |
| #line 1500 |
| return base + offset; |
| } |
| |
| char *allones_allones_OK(void) { |
| // CHECK: define{{.*}} ptr @allones_allones_OK() |
| // CHECK-NEXT: [[ENTRY:.*]]: |
| // CHECK-SANITIZE-C-NEXT: %[[AND:.*]] = and i1 icmp ne (ptr inttoptr (i64 -1 to ptr), ptr null), icmp ne (i64 add (i64 sub (i64 ptrtoint (ptr getelementptr inbounds (i8, ptr inttoptr (i64 -1 to ptr), i64 -1) to i64), i64 -1), i64 -1), i64 0), !nosanitize |
| // CHECK-SANITIZE-C-NEXT: br i1 %[[AND]], label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize |
| // CHECK-SANITIZE-CPP-NEXT: br i1 xor (i1 icmp eq (ptr inttoptr (i64 -1 to ptr), ptr null), i1 icmp ne (i64 add (i64 sub (i64 ptrtoint (ptr getelementptr inbounds (i8, ptr inttoptr (i64 -1 to ptr), i64 -1) to i64), i64 -1), i64 -1), i64 0)), label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize |
| // CHECK-SANITIZE: [[HANDLER_POINTER_OVERFLOW]]: |
| // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_pointer_overflow_abort(ptr @[[LINE_1600]], i64 -1, i64 add (i64 sub (i64 ptrtoint (ptr getelementptr inbounds (i8, ptr inttoptr (i64 -1 to ptr), i64 -1) to i64), i64 -1), i64 -1)) |
| // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_pointer_overflow(ptr @[[LINE_1600]], i64 -1, i64 add (i64 sub (i64 ptrtoint (ptr getelementptr inbounds (i8, ptr inttoptr (i64 -1 to ptr), i64 -1) to i64), i64 -1), i64 -1)) |
| // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.ubsantrap(i8 19){{.*}}, !nosanitize |
| // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize |
| // CHECK-SANITIZE: [[CONT]]: |
| // CHECK-NEXT: ret ptr getelementptr inbounds (i8, ptr inttoptr (i64 -1 to ptr), i64 -1) |
| static char *const base = (char *)-1; |
| static const unsigned long offset = -1; |
| #line 1600 |
| return base + offset; |
| } |
| |
| // C++ does not allow void* arithmetic even as a GNU extension. Replace void* |
| // with char* in that case to keep test expectations the same. |
| #ifdef __cplusplus |
| char *void_ptr(char *base, unsigned long offset) { |
| #else |
| char *void_ptr(void *base, unsigned long offset) { |
| #endif |
| // CHECK: define{{.*}} ptr @void_ptr(ptr noundef %[[BASE:.*]], i64 noundef %[[OFFSET:.*]]) |
| // CHECK-NEXT: [[ENTRY:.*]]: |
| // CHECK-NEXT: %[[BASE_ADDR:.*]] = alloca ptr, align 8 |
| // CHECK-NEXT: %[[OFFSET_ADDR:.*]] = alloca i64, align 8 |
| // CHECK-NEXT: store ptr %[[BASE]], ptr %[[BASE_ADDR]], align 8 |
| // CHECK-NEXT: store i64 %[[OFFSET]], ptr %[[OFFSET_ADDR]], align 8 |
| // CHECK-NEXT: %[[BASE_RELOADED:.*]] = load ptr, ptr %[[BASE_ADDR]], align 8 |
| // CHECK-NEXT: %[[OFFSET_RELOADED:.*]] = load i64, ptr %[[OFFSET_ADDR]], align 8 |
| // CHECK-NEXT: %[[ADD_PTR:.*]] = getelementptr inbounds i8, ptr %[[BASE_RELOADED]], i64 %[[OFFSET_RELOADED]] |
| // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_AGGREGATE:.*]] = call { i64, i1 } @llvm.smul.with.overflow.i64(i64 1, i64 %[[OFFSET_RELOADED]]), !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_OVERFLOWED:.*]] = extractvalue { i64, i1 } %[[COMPUTED_OFFSET_AGGREGATE]], 1, !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[OR_OV:.+]] = or i1 %[[COMPUTED_OFFSET_OVERFLOWED]], false, !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET:.*]] = extractvalue { i64, i1 } %[[COMPUTED_OFFSET_AGGREGATE]], 0, !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[BASE_RELOADED_INT:.*]] = ptrtoint ptr %[[BASE_RELOADED]] to i64, !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP:.*]] = add i64 %[[BASE_RELOADED_INT]], %[[COMPUTED_OFFSET]], !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[BASE_IS_NOT_NULLPTR:.*]] = icmp ne ptr %[[BASE_RELOADED]], null, !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_NOT_NULL:.*]] = icmp ne i64 %[[COMPUTED_GEP]], 0, !nosanitize |
| // CHECK-SANITIZE-C-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = and i1 %[[BASE_IS_NOT_NULLPTR]], %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize |
| // 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 |
| // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_DID_NOT_OVERFLOW:.*]] = xor i1 %[[OR_OV]], true, !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_UGE_BASE:.*]] = icmp uge i64 %[[COMPUTED_GEP]], %[[BASE_RELOADED_INT]], !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[GEP_DID_NOT_OVERFLOW:.*]] = and i1 %[[COMPUTED_GEP_IS_UGE_BASE]], %[[COMPUTED_OFFSET_DID_NOT_OVERFLOW]], !nosanitize |
| // CHECK-SANITIZE-NEXT: %[[GEP_IS_OKAY:.*]] = and i1 %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL]], %[[GEP_DID_NOT_OVERFLOW]], !nosanitize |
| // CHECK-SANITIZE-NEXT: br i1 %[[GEP_IS_OKAY]], label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize |
| // CHECK-SANITIZE: [[HANDLER_POINTER_OVERFLOW]]: |
| // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_pointer_overflow_abort(ptr @[[LINE_1700]], i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]]) |
| // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_pointer_overflow(ptr @[[LINE_1700]], i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]]) |
| // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.ubsantrap(i8 19){{.*}}, !nosanitize |
| // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize |
| // CHECK-SANITIZE: [[CONT]]: |
| // CHECK-NEXT: ret ptr %[[ADD_PTR]] |
| #line 1700 |
| return base + offset; |
| } |
| |
| #ifdef __cplusplus |
| } |
| #endif |
