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Unified Diff: runtime/bin/file.cc

Issue 10382194: Add more API fuzzing and fix the issues encountered. (Closed) Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart
Patch Set: Skip fuzz test in checked mode. Created 8 years, 7 months ago
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Index: runtime/bin/file.cc
diff --git a/runtime/bin/file.cc b/runtime/bin/file.cc
index 1318fe80e95e0af5170ccbcc81ad8e90197bf7fa..aa6ada816c9a0dc268b6c070344e5e7b34c74d69 100644
--- a/runtime/bin/file.cc
+++ b/runtime/bin/file.cc
@@ -79,9 +79,7 @@ void FUNCTION_NAME(File_Open)(Dart_NativeArguments args) {
Dart_NewInteger(reinterpret_cast<intptr_t>(file)));
} else {
Dart_Handle err = DartUtils::NewDartOSError();
- if (Dart_IsError(err)) {
- Dart_PropagateError(err);
- }
+ if (Dart_IsError(err)) Dart_PropagateError(err);
Dart_SetReturnValue(args, err);
}
Dart_ExitScope();
@@ -100,15 +98,12 @@ void FUNCTION_NAME(File_Exists)(Dart_NativeArguments args) {
void FUNCTION_NAME(File_Close)(Dart_NativeArguments args) {
Dart_EnterScope();
- intptr_t return_value = -1;
intptr_t value =
DartUtils::GetIntegerValue(Dart_GetNativeArgument(args, 0));
File* file = reinterpret_cast<File*>(value);
- if (file != NULL) {
- delete file;
- return_value = 0;
- }
- Dart_SetReturnValue(args, Dart_NewInteger(return_value));
+ ASSERT(file != NULL);
+ delete file;
+ Dart_SetReturnValue(args, Dart_NewInteger(0));
Dart_ExitScope();
}
@@ -118,20 +113,17 @@ void FUNCTION_NAME(File_ReadByte)(Dart_NativeArguments args) {
intptr_t value =
DartUtils::GetIntegerValue(Dart_GetNativeArgument(args, 0));
File* file = reinterpret_cast<File*>(value);
- if (file != NULL) {
- uint8_t buffer;
- int bytes_read = file->Read(reinterpret_cast<void*>(&buffer), 1);
- if (bytes_read == 1) {
- Dart_SetReturnValue(args, Dart_NewInteger(buffer));
- } else if (bytes_read == 0) {
- Dart_SetReturnValue(args, Dart_NewInteger(-1));
- } else {
- Dart_Handle err = DartUtils::NewDartOSError();
- if (Dart_IsError(err)) {
- Dart_PropagateError(err);
- }
- Dart_SetReturnValue(args, err);
- }
+ ASSERT(file != NULL);
+ uint8_t buffer;
+ int bytes_read = file->Read(reinterpret_cast<void*>(&buffer), 1);
+ if (bytes_read == 1) {
+ Dart_SetReturnValue(args, Dart_NewInteger(buffer));
+ } else if (bytes_read == 0) {
+ Dart_SetReturnValue(args, Dart_NewInteger(-1));
+ } else {
+ Dart_Handle err = DartUtils::NewDartOSError();
+ if (Dart_IsError(err)) Dart_PropagateError(err);
+ Dart_SetReturnValue(args, err);
}
Dart_ExitScope();
}
@@ -139,22 +131,26 @@ void FUNCTION_NAME(File_ReadByte)(Dart_NativeArguments args) {
void FUNCTION_NAME(File_WriteByte)(Dart_NativeArguments args) {
Dart_EnterScope();
- intptr_t value =
+ intptr_t file_ptr =
DartUtils::GetIntegerValue(Dart_GetNativeArgument(args, 0));
- File* file = reinterpret_cast<File*>(value);
- if (file != NULL) {
- int64_t value = DartUtils::GetIntegerValue(Dart_GetNativeArgument(args, 1));
+ File* file = reinterpret_cast<File*>(file_ptr);
+ ASSERT(file != NULL);
+ int64_t value = 0;
+ if (DartUtils::GetInt64Value(Dart_GetNativeArgument(args, 1), &value)) {
uint8_t buffer = static_cast<uint8_t>(value & 0xff);
int bytes_written = file->Write(reinterpret_cast<void*>(&buffer), 1);
if (bytes_written >= 0) {
Dart_SetReturnValue(args, Dart_NewInteger(bytes_written));
} else {
Dart_Handle err = DartUtils::NewDartOSError();
- if (Dart_IsError(err)) {
- Dart_PropagateError(err);
- }
+ if (Dart_IsError(err)) Dart_PropagateError(err);
Dart_SetReturnValue(args, err);
}
+ } else {
+ OSError os_error(-1, "Invalid argument", OSError::kUnknown);
+ Dart_Handle err = DartUtils::NewDartOSError(&os_error);
+ if (Dart_IsError(err)) Dart_PropagateError(err);
+ Dart_SetReturnValue(args, err);
}
Dart_ExitScope();
}
@@ -165,20 +161,17 @@ void FUNCTION_NAME(File_WriteString)(Dart_NativeArguments args) {
intptr_t value =
DartUtils::GetIntegerValue(Dart_GetNativeArgument(args, 0));
File* file = reinterpret_cast<File*>(value);
- if (file != NULL) {
- const char* str =
- DartUtils::GetStringValue(Dart_GetNativeArgument(args, 1));
- int bytes_written = file->Write(reinterpret_cast<const void*>(str),
- strlen(str));
- if (bytes_written >= 0) {
- Dart_SetReturnValue(args, Dart_NewInteger(bytes_written));
- } else {
- Dart_Handle err = DartUtils::NewDartOSError();
- if (Dart_IsError(err)) {
- Dart_PropagateError(err);
- }
- Dart_SetReturnValue(args, err);
- }
+ ASSERT(file != NULL);
+ const char* str =
+ DartUtils::GetStringValue(Dart_GetNativeArgument(args, 1));
+ int bytes_written = file->Write(reinterpret_cast<const void*>(str),
+ strlen(str));
+ if (bytes_written >= 0) {
+ Dart_SetReturnValue(args, Dart_NewInteger(bytes_written));
+ } else {
+ Dart_Handle err = DartUtils::NewDartOSError();
+ if (Dart_IsError(err)) Dart_PropagateError(err);
+ Dart_SetReturnValue(args, err);
}
Dart_ExitScope();
}
@@ -189,38 +182,32 @@ void FUNCTION_NAME(File_ReadList)(Dart_NativeArguments args) {
intptr_t value =
DartUtils::GetIntegerValue(Dart_GetNativeArgument(args, 0));
File* file = reinterpret_cast<File*>(value);
- if (file != NULL) {
- Dart_Handle buffer_obj = Dart_GetNativeArgument(args, 1);
- ASSERT(Dart_IsList(buffer_obj));
- int64_t offset =
- DartUtils::GetIntegerValue(Dart_GetNativeArgument(args, 2));
- int64_t length =
- DartUtils::GetIntegerValue(Dart_GetNativeArgument(args, 3));
- intptr_t array_len = 0;
- Dart_Handle result = Dart_ListLength(buffer_obj, &array_len);
+ ASSERT(file != NULL);
+ Dart_Handle buffer_obj = Dart_GetNativeArgument(args, 1);
+ ASSERT(Dart_IsList(buffer_obj));
+ int64_t offset =
+ DartUtils::GetIntegerValue(Dart_GetNativeArgument(args, 2));
+ int64_t length =
+ DartUtils::GetIntegerValue(Dart_GetNativeArgument(args, 3));
+ intptr_t array_len = 0;
+ Dart_Handle result = Dart_ListLength(buffer_obj, &array_len);
+ if (Dart_IsError(result)) Dart_PropagateError(result);
+ ASSERT((offset + length) <= array_len);
+ uint8_t* buffer = new uint8_t[length];
+ int bytes_read = file->Read(reinterpret_cast<void*>(buffer), length);
+ if (bytes_read >= 0) {
+ result = Dart_ListSetAsBytes(buffer_obj, offset, buffer, bytes_read);
if (Dart_IsError(result)) {
+ delete[] buffer;
Dart_PropagateError(result);
}
- ASSERT((offset + length) <= array_len);
- uint8_t* buffer = new uint8_t[length];
- int bytes_read = file->Read(reinterpret_cast<void*>(buffer), length);
- if (bytes_read >= 0) {
- result =
- Dart_ListSetAsBytes(buffer_obj, offset, buffer, bytes_read);
- if (Dart_IsError(result)) {
- delete[] buffer;
- Dart_PropagateError(result);
- }
- Dart_SetReturnValue(args, Dart_NewInteger(bytes_read));
- } else {
- Dart_Handle err = DartUtils::NewDartOSError();
- if (Dart_IsError(err)) {
- Dart_PropagateError(err);
- }
- Dart_SetReturnValue(args, err);
- }
- delete[] buffer;
+ Dart_SetReturnValue(args, Dart_NewInteger(bytes_read));
+ } else {
+ Dart_Handle err = DartUtils::NewDartOSError();
+ if (Dart_IsError(err)) Dart_PropagateError(err);
+ Dart_SetReturnValue(args, err);
}
+ delete[] buffer;
Dart_ExitScope();
}
@@ -230,37 +217,32 @@ void FUNCTION_NAME(File_WriteList)(Dart_NativeArguments args) {
intptr_t value =
DartUtils::GetIntegerValue(Dart_GetNativeArgument(args, 0));
File* file = reinterpret_cast<File*>(value);
- if (file != NULL) {
- Dart_Handle buffer_obj = Dart_GetNativeArgument(args, 1);
- ASSERT(Dart_IsList(buffer_obj));
- int64_t offset =
- DartUtils::GetIntegerValue(Dart_GetNativeArgument(args, 2));
- int64_t length =
- DartUtils::GetIntegerValue(Dart_GetNativeArgument(args, 3));
- intptr_t buffer_len = 0;
- Dart_Handle result = Dart_ListLength(buffer_obj, &buffer_len);
- if (Dart_IsError(result)) {
- Dart_PropagateError(result);
- }
- ASSERT((offset + length) <= buffer_len);
- uint8_t* buffer = new uint8_t[length];
- result = Dart_ListGetAsBytes(buffer_obj, offset, buffer, length);
- if (Dart_IsError(result)) {
- delete[] buffer;
- Dart_PropagateError(result);
- }
- int bytes_written = file->Write(reinterpret_cast<void*>(buffer), length);
- if (bytes_written >= 0) {
- Dart_SetReturnValue(args, Dart_NewInteger(bytes_written));
- } else {
- Dart_Handle err = DartUtils::NewDartOSError();
- if (Dart_IsError(err)) {
- Dart_PropagateError(err);
- }
- Dart_SetReturnValue(args, err);
- }
+ ASSERT(file != NULL);
+ Dart_Handle buffer_obj = Dart_GetNativeArgument(args, 1);
+ ASSERT(Dart_IsList(buffer_obj));
+ int64_t offset =
+ DartUtils::GetIntegerValue(Dart_GetNativeArgument(args, 2));
+ int64_t length =
+ DartUtils::GetIntegerValue(Dart_GetNativeArgument(args, 3));
+ intptr_t buffer_len = 0;
+ Dart_Handle result = Dart_ListLength(buffer_obj, &buffer_len);
+ if (Dart_IsError(result)) Dart_PropagateError(result);
+ ASSERT((offset + length) <= buffer_len);
+ uint8_t* buffer = new uint8_t[length];
+ result = Dart_ListGetAsBytes(buffer_obj, offset, buffer, length);
+ if (Dart_IsError(result)) {
delete[] buffer;
+ Dart_PropagateError(result);
}
+ int bytes_written = file->Write(reinterpret_cast<void*>(buffer), length);
+ if (bytes_written >= 0) {
+ Dart_SetReturnValue(args, Dart_NewInteger(bytes_written));
+ } else {
+ Dart_Handle err = DartUtils::NewDartOSError();
+ if (Dart_IsError(err)) Dart_PropagateError(err);
+ Dart_SetReturnValue(args, err);
+ }
+ delete[] buffer;
Dart_ExitScope();
}
@@ -270,17 +252,14 @@ void FUNCTION_NAME(File_Position)(Dart_NativeArguments args) {
intptr_t value =
DartUtils::GetIntegerValue(Dart_GetNativeArgument(args, 0));
File* file = reinterpret_cast<File*>(value);
- if (file != NULL) {
- intptr_t return_value = file->Position();
- if (return_value >= 0) {
- Dart_SetReturnValue(args, Dart_NewInteger(return_value));
- } else {
- Dart_Handle err = DartUtils::NewDartOSError();
- if (Dart_IsError(err)) {
- Dart_PropagateError(err);
- }
- Dart_SetReturnValue(args, err);
- }
+ ASSERT(file != NULL);
+ intptr_t return_value = file->Position();
+ if (return_value >= 0) {
+ Dart_SetReturnValue(args, Dart_NewInteger(return_value));
+ } else {
+ Dart_Handle err = DartUtils::NewDartOSError();
+ if (Dart_IsError(err)) Dart_PropagateError(err);
+ Dart_SetReturnValue(args, err);
}
Dart_ExitScope();
}
@@ -291,18 +270,21 @@ void FUNCTION_NAME(File_SetPosition)(Dart_NativeArguments args) {
intptr_t value =
DartUtils::GetIntegerValue(Dart_GetNativeArgument(args, 0));
File* file = reinterpret_cast<File*>(value);
- if (file != NULL) {
- int64_t position =
- DartUtils::GetIntegerValue(Dart_GetNativeArgument(args, 1));
+ ASSERT(file != NULL);
+ int64_t position = 0;
+ if (DartUtils::GetInt64Value(Dart_GetNativeArgument(args, 1), &position)) {
if (file->SetPosition(position)) {
Dart_SetReturnValue(args, Dart_True());
} else {
Dart_Handle err = DartUtils::NewDartOSError();
- if (Dart_IsError(err)) {
- Dart_PropagateError(err);
- }
+ if (Dart_IsError(err)) Dart_PropagateError(err);
Dart_SetReturnValue(args, err);
}
+ } else {
+ OSError os_error(-1, "Invalid argument", OSError::kUnknown);
+ Dart_Handle err = DartUtils::NewDartOSError(&os_error);
+ if (Dart_IsError(err)) Dart_PropagateError(err);
+ Dart_SetReturnValue(args, err);
}
Dart_ExitScope();
}
@@ -313,18 +295,15 @@ void FUNCTION_NAME(File_Truncate)(Dart_NativeArguments args) {
intptr_t value =
DartUtils::GetIntegerValue(Dart_GetNativeArgument(args, 0));
File* file = reinterpret_cast<File*>(value);
- if (file != NULL) {
- int64_t length =
- DartUtils::GetIntegerValue(Dart_GetNativeArgument(args, 1));
- if (file->Truncate(length)) {
- Dart_SetReturnValue(args, Dart_True());
- } else {
- Dart_Handle err = DartUtils::NewDartOSError();
- if (Dart_IsError(err)) {
- Dart_PropagateError(err);
- }
- Dart_SetReturnValue(args, err);
- }
+ ASSERT(file != NULL);
+ int64_t length =
+ DartUtils::GetIntegerValue(Dart_GetNativeArgument(args, 1));
+ if (file->Truncate(length)) {
+ Dart_SetReturnValue(args, Dart_True());
+ } else {
+ Dart_Handle err = DartUtils::NewDartOSError();
+ if (Dart_IsError(err)) Dart_PropagateError(err);
+ Dart_SetReturnValue(args, err);
}
Dart_ExitScope();
}
@@ -335,17 +314,14 @@ void FUNCTION_NAME(File_Length)(Dart_NativeArguments args) {
intptr_t value =
DartUtils::GetIntegerValue(Dart_GetNativeArgument(args, 0));
File* file = reinterpret_cast<File*>(value);
- if (file != NULL) {
- intptr_t return_value = file->Length();
- if (return_value >= 0) {
- Dart_SetReturnValue(args, Dart_NewInteger(return_value));
- } else {
- Dart_Handle err = DartUtils::NewDartOSError();
- if (Dart_IsError(err)) {
- Dart_PropagateError(err);
- }
- Dart_SetReturnValue(args, err);
- }
+ ASSERT(file != NULL);
+ intptr_t return_value = file->Length();
+ if (return_value >= 0) {
+ Dart_SetReturnValue(args, Dart_NewInteger(return_value));
+ } else {
+ Dart_Handle err = DartUtils::NewDartOSError();
+ if (Dart_IsError(err)) Dart_PropagateError(err);
+ Dart_SetReturnValue(args, err);
}
Dart_ExitScope();
}
@@ -360,9 +336,7 @@ void FUNCTION_NAME(File_LengthFromName)(Dart_NativeArguments args) {
Dart_SetReturnValue(args, Dart_NewInteger(return_value));
} else {
Dart_Handle err = DartUtils::NewDartOSError();
- if (Dart_IsError(err)) {
- Dart_PropagateError(err);
- }
+ if (Dart_IsError(err)) Dart_PropagateError(err);
Dart_SetReturnValue(args, err);
}
Dart_ExitScope();
@@ -374,16 +348,13 @@ void FUNCTION_NAME(File_Flush)(Dart_NativeArguments args) {
intptr_t value =
DartUtils::GetIntegerValue(Dart_GetNativeArgument(args, 0));
File* file = reinterpret_cast<File*>(value);
- if (file != NULL) {
- if (file->Flush()) {
- Dart_SetReturnValue(args, Dart_True());
- } else {
- Dart_Handle err = DartUtils::NewDartOSError();
- if (Dart_IsError(err)) {
- Dart_PropagateError(err);
- }
- Dart_SetReturnValue(args, err);
- }
+ ASSERT(file != NULL);
+ if (file->Flush()) {
+ Dart_SetReturnValue(args, Dart_True());
+ } else {
+ Dart_Handle err = DartUtils::NewDartOSError();
+ if (Dart_IsError(err)) Dart_PropagateError(err);
+ Dart_SetReturnValue(args, err);
}
Dart_ExitScope();
}
@@ -398,9 +369,7 @@ void FUNCTION_NAME(File_Create)(Dart_NativeArguments args) {
Dart_SetReturnValue(args, Dart_NewBoolean(result));
} else {
Dart_Handle err = DartUtils::NewDartOSError();
- if (Dart_IsError(err)) {
- Dart_PropagateError(err);
- }
+ if (Dart_IsError(err)) Dart_PropagateError(err);
Dart_SetReturnValue(args, err);
}
Dart_ExitScope();
@@ -416,9 +385,7 @@ void FUNCTION_NAME(File_Delete)(Dart_NativeArguments args) {
Dart_SetReturnValue(args, Dart_NewBoolean(result));
} else {
Dart_Handle err = DartUtils::NewDartOSError();
- if (Dart_IsError(err)) {
- Dart_PropagateError(err);
- }
+ if (Dart_IsError(err)) Dart_PropagateError(err);
Dart_SetReturnValue(args, err);
}
Dart_ExitScope();
@@ -437,9 +404,7 @@ void FUNCTION_NAME(File_Directory)(Dart_NativeArguments args) {
free(path);
} else {
Dart_Handle err = DartUtils::NewDartOSError();
- if (Dart_IsError(err)) {
- Dart_PropagateError(err);
- }
+ if (Dart_IsError(err)) Dart_PropagateError(err);
Dart_SetReturnValue(args, err);
}
Dart_ExitScope();
@@ -456,9 +421,7 @@ void FUNCTION_NAME(File_FullPath)(Dart_NativeArguments args) {
free(path);
} else {
Dart_Handle err = DartUtils::NewDartOSError();
- if (Dart_IsError(err)) {
- Dart_PropagateError(err);
- }
+ if (Dart_IsError(err)) Dart_PropagateError(err);
Dart_SetReturnValue(args, err);
}
Dart_ExitScope();
@@ -600,10 +563,9 @@ static CObject* FileCloseRequest(const CObjectArray& request) {
intptr_t return_value = -1;
if (request.Length() == 2 && request[1]->IsIntptr()) {
File* file = CObjectToFilePointer(request[1]);
- if (file != NULL) {
- delete file;
- return_value = 0;
- }
+ ASSERT(file != NULL);
+ delete file;
+ return_value = 0;
}
return new CObjectIntptr(CObject::NewIntptr(return_value));
}
@@ -612,7 +574,8 @@ static CObject* FileCloseRequest(const CObjectArray& request) {
static CObject* FilePositionRequest(const CObjectArray& request) {
if (request.Length() == 2 && request[1]->IsIntptr()) {
File* file = CObjectToFilePointer(request[1]);
- if (file != NULL && !file->IsClosed()) {
+ ASSERT(file != NULL);
+ if (!file->IsClosed()) {
intptr_t return_value = file->Position();
if (return_value >= 0) {
return new CObjectIntptr(CObject::NewIntptr(return_value));
@@ -632,7 +595,8 @@ static CObject* FileSetPositionRequest(const CObjectArray& request) {
request[1]->IsIntptr() &&
request[2]->IsInt32OrInt64()) {
File* file = CObjectToFilePointer(request[1]);
- if (file != NULL && !file->IsClosed()) {
+ ASSERT(file != NULL);
+ if (!file->IsClosed()) {
int64_t position = CObjectInt32OrInt64ToInt64(request[2]);
if (file->SetPosition(position)) {
return CObject::True();
@@ -652,7 +616,8 @@ static CObject* FileTruncateRequest(const CObjectArray& request) {
request[1]->IsIntptr() &&
request[2]->IsInt32OrInt64()) {
File* file = CObjectToFilePointer(request[1]);
- if (file != NULL && !file->IsClosed()) {
+ ASSERT(file != NULL);
+ if (!file->IsClosed()) {
int64_t length = CObjectInt32OrInt64ToInt64(request[2]);
if (file->Truncate(length)) {
return CObject::True();
@@ -670,7 +635,8 @@ static CObject* FileTruncateRequest(const CObjectArray& request) {
static CObject* FileLengthRequest(const CObjectArray& request) {
if (request.Length() == 2 && request[1]->IsIntptr()) {
File* file = CObjectToFilePointer(request[1]);
- if (file != NULL && !file->IsClosed()) {
+ ASSERT(file != NULL);
+ if (!file->IsClosed()) {
intptr_t return_value = file->Length();
if (return_value >= 0) {
return new CObjectIntptr(CObject::NewIntptr(return_value));
@@ -700,10 +666,10 @@ static CObject* FileLengthFromNameRequest(const CObjectArray& request) {
static CObject* FileFlushRequest(const CObjectArray& request) {
- intptr_t return_value = -1;
if (request.Length() == 2 && request[1]->IsIntptr()) {
File* file = CObjectToFilePointer(request[1]);
- if (file != NULL && !file->IsClosed()) {
+ ASSERT(file != NULL);
+ if (!file->IsClosed()) {
if (file->Flush()) {
return CObject::True();
} else {
@@ -714,14 +680,14 @@ static CObject* FileFlushRequest(const CObjectArray& request) {
}
}
return CObject::IllegalArgumentError();
- return new CObjectIntptr(CObject::NewIntptr(return_value));
}
static CObject* FileReadByteRequest(const CObjectArray& request) {
if (request.Length() == 2 && request[1]->IsIntptr()) {
File* file = CObjectToFilePointer(request[1]);
- if (file != NULL && !file->IsClosed()) {
+ ASSERT(file != NULL);
+ if (!file->IsClosed()) {
uint8_t buffer;
int bytes_read = file->Read(reinterpret_cast<void*>(&buffer), 1);
if (bytes_read > 0) {
@@ -744,7 +710,8 @@ static CObject* FileWriteByteRequest(const CObjectArray& request) {
request[1]->IsIntptr() &&
request[2]->IsInt32OrInt64()) {
File* file = CObjectToFilePointer(request[1]);
- if (file != NULL && !file->IsClosed()) {
+ ASSERT(file != NULL);
+ if (!file->IsClosed()) {
int64_t byte = CObjectInt32OrInt64ToInt64(request[2]);
uint8_t buffer = static_cast<uint8_t>(byte & 0xff);
int bytes_written = file->Write(reinterpret_cast<void*>(&buffer), 1);
@@ -766,7 +733,8 @@ static CObject* FileReadListRequest(const CObjectArray& request) {
request[1]->IsIntptr() &&
request[2]->IsInt32OrInt64()) {
File* file = CObjectToFilePointer(request[1]);
- if (file != NULL && !file->IsClosed()) {
+ ASSERT(file != NULL);
+ if (!file->IsClosed()) {
int64_t length = CObjectInt32OrInt64ToInt64(request[2]);
CObjectUint8Array* byte_array =
new CObjectUint8Array(CObject::NewUint8Array(length));
@@ -796,7 +764,8 @@ static CObject* FileWriteListRequest(const CObjectArray& request) {
request[3]->IsInt32OrInt64() &&
request[4]->IsInt32OrInt64()) {
File* file = CObjectToFilePointer(request[1]);
- if (file != NULL && !file->IsClosed()) {
+ ASSERT(file != NULL);
+ if (!file->IsClosed()) {
int64_t offset = CObjectInt32OrInt64ToInt64(request[3]);
int64_t length = CObjectInt32OrInt64ToInt64(request[4]);
uint8_t* buffer_start;
@@ -841,7 +810,8 @@ static CObject* FileWriteStringRequest(const CObjectArray& request) {
request[1]->IsIntptr() &&
request[2]->IsString()) {
File* file = CObjectToFilePointer(request[1]);
- if (file != NULL && !file->IsClosed()) {
+ ASSERT(file != NULL);
+ if (!file->IsClosed()) {
CObjectString str(request[2]);
const void* buffer = reinterpret_cast<const void*>(str.CString());
int64_t bytes_written = file->Write(buffer, str.Length());
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