node/src/node_errors.cc at main · nodejs/node · GitHub

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#include <cerrno>

#include <cstdarg>

#include <filesystem>

#include <sstream>

#include "debug_utils-inl.h"

#include "node_errors.h"

#include "node_external_reference.h"

#include "node_internals.h"

#include "node_process-inl.h"

#include "node_report.h"

#include "node_v8_platform-inl.h"

#include "util-inl.h"

namespace node {

using errors::TryCatchScope;

using v8::Boolean;

using v8::Context;

using v8::EscapableHandleScope;

using v8::Exception;

using v8::Function;

using v8::FunctionCallbackInfo;

using v8::HandleScope;

using v8::Int32;

using v8::Isolate;

using v8::Just;

using v8::Local;

using v8::Maybe;

using v8::MaybeLocal;

using v8::Message;

using v8::Object;

using v8::ScriptOrigin;

using v8::StackFrame;

using v8::StackTrace;

using v8::String;

using v8::Undefined;

using v8::Value;

bool IsExceptionDecorated(Environment* env, Local<Value> er) {

if (!er.IsEmpty() && er->IsObject()) {

Local<Object> err_obj = er.As<Object>();

auto maybe_value =

err_obj->GetPrivate(env->context(), env->decorated_private_symbol());

Local<Value> decorated;

return maybe_value.ToLocal(&decorated) && decorated->IsTrue();

}

return false;

}

namespace per_process {

static Mutex tty_mutex;

} // namespace per_process

static std::string GetSourceMapErrorSource(Isolate* isolate,

Local<Context> context,

Local<Message> message,

bool* added_exception_line) {

v8::TryCatch try_catch(isolate);

HandleScope handle_scope(isolate);

Environment* env = Environment::GetCurrent(context);

// The ScriptResourceName of the message may be different from the one we use

// to compile the script. V8 replaces it when it detects magic comments in

// the source texts.

Local<Value> script_resource_name = message->GetScriptResourceName();

int linenum = message->GetLineNumber(context).FromJust();

int columnum = message->GetStartColumn();

Local<Value> argv[] = {script_resource_name,

v8::Int32::New(isolate, linenum),

v8::Int32::New(isolate, columnum)};

MaybeLocal<Value> maybe_ret = env->get_source_map_error_source()->Call(

context, Undefined(isolate), arraysize(argv), argv);

Local<Value> ret;

if (!maybe_ret.ToLocal(&ret)) {

// Ignore the caught exceptions.

DCHECK(try_catch.HasCaught());

return std::string();

}

if (!ret->IsString()) {

return std::string();

}

*added_exception_line = true;

node::Utf8Value error_source_utf8(isolate, ret.As<String>());

return *error_source_utf8;

}

static std::string GetErrorSource(Isolate* isolate,

Local<Context> context,

Local<Message> message,

bool* added_exception_line) {

MaybeLocal<String> source_line_maybe = message->GetSourceLine(context);

node::Utf8Value encoded_source(isolate, source_line_maybe.ToLocalChecked());

std::string sourceline(*encoded_source, encoded_source.length());

*added_exception_line = false;

if (sourceline.find("node-do-not-add-exception-line") != std::string::npos) {

return sourceline;

}

// If source maps have been enabled, the exception line will instead be

// added in the JavaScript context:

Environment* env = Environment::GetCurrent(isolate);

const bool has_source_map_url =

!message->GetScriptOrigin().SourceMapUrl().IsEmpty() &&

!message->GetScriptOrigin().SourceMapUrl()->IsUndefined();

if (has_source_map_url && env != nullptr && env->source_maps_enabled()) {

std::string source = GetSourceMapErrorSource(

isolate, context, message, added_exception_line);

if (*added_exception_line) {

return source;

}

// Because of how node modules work, all scripts are wrapped with a

// "function (module, exports, __filename, ...) {"

// to provide script local variables.

// When reporting errors on the first line of a script, this wrapper

// function is leaked to the user. There used to be a hack here to

// truncate off the first 62 characters, but it caused numerous other

// problems when vm.runIn*Context() methods were used for non-module

// code.

// If we ever decide to re-instate such a hack, the following steps

// must be taken:

// 1. Pass a flag around to say "this code was wrapped"

// 2. Update the stack frame output so that it is also correct.

// It would probably be simpler to add a line rather than add some

// number of characters to the first line, since V8 truncates the

// sourceline to 78 characters, and we end up not providing very much

// useful debugging info to the user if we remove 62 characters.

// Print (filename):(line number): (message).

ScriptOrigin origin = message->GetScriptOrigin();

std::string filename_string;

if (message->GetScriptResourceName()->IsUndefined()) {

filename_string = "<anonymous_script>";

} else {

node::Utf8Value filename(isolate, message->GetScriptResourceName());

filename_string = filename.ToString();

}

int linenum = message->GetLineNumber(context).FromJust();

int script_start = (linenum - origin.LineOffset()) == 1

? origin.ColumnOffset()

: 0;

int start = message->GetStartColumn();

int end = message->GetEndColumn();

if (start >= script_start && end >= script_start) {

start -= script_start;

end -= script_start;

}

std::string buf =

SPrintF("%s:%i\n%s\n", filename_string, linenum, sourceline);

CHECK_GT(buf.size(), 0);

*added_exception_line = true;

if (start > end || start < 0 || end < 0 ||

static_cast<size_t>(end) > sourceline.size()) {

return buf;

}

constexpr int kUnderlineBufsize = 1020;

char underline_buf[kUnderlineBufsize + 4];

int off = 0;

// Print wavy underline (GetUnderline is deprecated).

for (int i = 0; i < start; i++) {

if (sourceline[i] == '\0' || off >= kUnderlineBufsize) {

break;

}

CHECK_LT(off, kUnderlineBufsize);

underline_buf[off++] = (sourceline[i] == '\t') ? '\t' : ' ';

}

for (int i = start; i < end; i++) {

if (sourceline[i] == '\0' || off >= kUnderlineBufsize) {

break;

}

CHECK_LT(off, kUnderlineBufsize);

underline_buf[off++] = '^';

}

CHECK_LE(off, kUnderlineBufsize);

underline_buf[off++] = '\n';

return buf + std::string(underline_buf, off);

}

static std::atomic<bool> is_in_oom{false};

static thread_local std::atomic<bool> is_retrieving_js_stacktrace{false};

MaybeLocal<StackTrace> GetCurrentStackTrace(Isolate* isolate, int frame_count) {

if (isolate == nullptr) {

return MaybeLocal<StackTrace>();

}

// Generating JavaScript stack trace can result in V8 fatal error,

// which can re-enter this function.

if (is_retrieving_js_stacktrace.load()) {

return MaybeLocal<StackTrace>();

}

// Can not capture the stacktrace when the isolate is in a OOM state or no

// context is entered.

if (is_in_oom.load() || !isolate->InContext()) {

return MaybeLocal<StackTrace>();

}

constexpr StackTrace::StackTraceOptions options =

static_cast<StackTrace::StackTraceOptions>(

StackTrace::kDetailed |

StackTrace::kExposeFramesAcrossSecurityOrigins);

is_retrieving_js_stacktrace.store(true);

EscapableHandleScope scope(isolate);

Local<StackTrace> stack =

StackTrace::CurrentStackTrace(isolate, frame_count, options);

is_retrieving_js_stacktrace.store(false);

return scope.Escape(stack);

}

static std::string FormatStackTrace(

Isolate* isolate,

Local<StackTrace> stack,

StackTracePrefix prefix = StackTracePrefix::kAt) {

std::string result;

for (int i = 0; i < stack->GetFrameCount(); i++) {

Local<StackFrame> stack_frame = stack->GetFrame(isolate, i);

node::Utf8Value fn_name_s(isolate, stack_frame->GetFunctionName());

node::Utf8Value script_name(isolate, stack_frame->GetScriptName());

const int line_number = stack_frame->GetLineNumber();

const int column = stack_frame->GetColumn();

std::string prefix_str = prefix == StackTracePrefix::kAt

? " at "

: std::to_string(i + 1) + ": ";

if (stack_frame->IsEval()) {

if (stack_frame->GetScriptId() == Message::kNoScriptIdInfo) {

result += SPrintF("%s[eval]:%i:%i\n", prefix_str, line_number, column);

} else {

std::vector<char> buf(script_name.length() + 64);

snprintf(buf.data(),

buf.size(),

"%s[eval] (%s:%i:%i)\n",

prefix_str.c_str(),

*script_name,

line_number,

column);

result += std::string(buf.data());

}

break;

}

if (fn_name_s.length() == 0) {

std::vector<char> buf(script_name.length() + 64);

snprintf(buf.data(),

buf.size(),

"%s%s:%i:%i\n",

prefix_str.c_str(),

*script_name,

line_number,

column);

result += std::string(buf.data());

} else {

std::vector<char> buf(fn_name_s.length() + script_name.length() + 64);

snprintf(buf.data(),

buf.size(),

"%s%s (%s:%i:%i)\n",

prefix_str.c_str(),

*fn_name_s,

*script_name,

line_number,

column);

result += std::string(buf.data());

}

return result;

}

static void PrintToStderrAndFlush(const std::string& str) {

FPrintF(stderr, "%s\n", str);

fflush(stderr);

}

void PrintStackTrace(Isolate* isolate,

Local<StackTrace> stack,

StackTracePrefix prefix) {

PrintToStderrAndFlush(FormatStackTrace(isolate, stack, prefix));

}

void PrintCurrentStackTrace(Isolate* isolate, StackTracePrefix prefix) {

Local<StackTrace> stack;

if (GetCurrentStackTrace(isolate).ToLocal(&stack) &&

stack->GetFrameCount() > 0) {

PrintStackTrace(isolate, stack, prefix);

}

std::string FormatCaughtException(Isolate* isolate,

Local<Context> context,

Local<Value> err,

Local<Message> message,

bool add_source_line = true) {

node::Utf8Value reason(isolate,

err->ToDetailString(context)

.FromMaybe(Local<String>()));

std::string reason_str = reason.ToString();

return FormatErrorMessage(

isolate, context, reason_str, message, add_source_line);

}

std::string FormatErrorMessage(Isolate* isolate,

Local<Context> context,

const std::string& reason,

Local<Message> message,

bool add_source_line) {

std::string result;

if (add_source_line) {

bool added_exception_line = false;

std::string source =

GetErrorSource(isolate, context, message, &added_exception_line);

result = source + '\n';

}

result += reason + '\n';

Local<v8::StackTrace> stack = message->GetStackTrace();

if (!stack.IsEmpty()) result += FormatStackTrace(isolate, stack);

return result;

}

std::string FormatCaughtException(Isolate* isolate,

Local<Context> context,

const v8::TryCatch& try_catch) {

CHECK(try_catch.HasCaught());

return FormatCaughtException(

isolate, context, try_catch.Exception(), try_catch.Message());

}

void PrintCaughtException(Isolate* isolate,

Local<Context> context,

const v8::TryCatch& try_catch) {

PrintToStderrAndFlush(FormatCaughtException(isolate, context, try_catch));

}

void AppendExceptionLine(Environment* env,

Local<Value> er,

Local<Message> message,

enum ErrorHandlingMode mode) {

if (message.IsEmpty()) return;

HandleScope scope(env->isolate());

Local<Object> err_obj;

if (!er.IsEmpty() && er->IsObject()) {

err_obj = er.As<Object>();

// If arrow_message is already set, skip.

auto maybe_value = err_obj->GetPrivate(env->context(),

env->arrow_message_private_symbol());

Local<Value> lvalue;

if (!maybe_value.ToLocal(&lvalue) || lvalue->IsString())

return;

}

bool added_exception_line = false;

std::string source = GetErrorSource(

env->isolate(), env->context(), message, &added_exception_line);

if (!added_exception_line) {

return;

}

MaybeLocal<Value> arrow_str = ToV8Value(env->context(), source);

const bool can_set_arrow = !arrow_str.IsEmpty() && !err_obj.IsEmpty();

// If allocating arrow_str failed, print it out. There's not much else to do.

// If it's not an error, but something needs to be printed out because

// it's a fatal exception, also print it out from here.

// Otherwise, the arrow property will be attached to the object and handled

// by the caller.

if (!can_set_arrow || (mode == FATAL_ERROR && !err_obj->IsNativeError())) {

if (env->printed_error()) return;

Mutex::ScopedLock lock(per_process::tty_mutex);

env->set_printed_error(true);

ResetStdio();

FPrintF(stderr, "\n%s", source);

return;

}

CHECK(err_obj

->SetPrivate(env->context(),

env->arrow_message_private_symbol(),

arrow_str.ToLocalChecked())

.FromMaybe(false));

}

namespace {

// Default handler: Dumps native + JS backtraces to stderr and exits. This

// indirectly calls backtrace so it can not be marked as [[noreturn]] (see the

// comment on node::Assert() below). `message` and `location` are ignored

// because the assertion/fatal-error message, if any, is already printed to

// stderr by the caller (Assert()/OnFatalError()) before this handler runs.

void DefaultAbortHandler(const char* /*location*/, const char* /*message*/) {

DumpNativeBacktrace(stderr);

DumpJavaScriptBacktrace(stderr);

fflush(stderr);

ABORT_NO_BACKTRACE();

}

// Constant-initialized, so this is valid from load time, safe even for a

// CHECK() during early startup, before any SetAbortHandler call.

AbortHandler g_abort_handler = DefaultAbortHandler;

} // namespace

void SetAbortHandler(AbortHandler handler) {

g_abort_handler = handler ? handler : DefaultAbortHandler;

}

AbortHandler GetAbortHandler() {

return g_abort_handler;

}

void Assert(const AssertionInfo& info) {

std::string name = GetHumanReadableProcessName();

fprintf(stderr,

"\n"

" # %s: %s at %s\n"

" # Assertion failed: %s\n\n",

name.c_str(),

info.function ? info.function : "(unknown function)",

info.file_line ? info.file_line : "(unknown source location)",

info.message);

fflush(stderr);

ABORT_WITH_DETAILS(info.file_line, info.message);

}

enum class EnhanceFatalException { kEnhance, kDontEnhance };

/**

* Report the exception to the inspector, then print it to stderr.

* This should only be used when the Node.js instance is about to exit

* (i.e. this should be followed by a env->Exit() or an ABORT()).

* Use enhance_stack = EnhanceFatalException::kDontEnhance

* when it's unsafe to call into JavaScript.

static void ReportFatalException(Environment* env,

Local<Value> error,

Local<Message> message,

EnhanceFatalException enhance_stack) {

if (!env->can_call_into_js())

enhance_stack = EnhanceFatalException::kDontEnhance;

Isolate* isolate = env->isolate();

CHECK(!error.IsEmpty());

CHECK(!message.IsEmpty());

HandleScope scope(isolate);

AppendExceptionLine(env, error, message, FATAL_ERROR);

auto report_to_inspector = [&]() {

#if HAVE_INSPECTOR

env->inspector_agent()->ReportUncaughtException(error, message);

#endif

};

Local<Value> arrow;

Local<Value> stack_trace;

bool decorated = IsExceptionDecorated(env, error);

if (!error->IsObject()) { // We can only enhance actual errors.

report_to_inspector();

stack_trace = Undefined(isolate);

// If error is not an object, AppendExceptionLine() has already print the

// source line and the arrow to stderr.

// TODO(joyeecheung): move that side effect out of AppendExceptionLine().

// It is done just to preserve the source line as soon as possible.

} else {

Local<Object> err_obj = error.As<Object>();

auto enhance_with = [&](Local<Function> enhancer) {

Local<Value> enhanced;

Local<Value> argv[] = {err_obj};

if (!enhancer.IsEmpty() &&

enhancer

->Call(env->context(), Undefined(isolate), arraysize(argv), argv)

.ToLocal(&enhanced)) {

stack_trace = enhanced;

}

};

switch (enhance_stack) {

case EnhanceFatalException::kEnhance: {

enhance_with(env->enhance_fatal_stack_before_inspector());

report_to_inspector();

enhance_with(env->enhance_fatal_stack_after_inspector());

break;

}

case EnhanceFatalException::kDontEnhance: {

USE(err_obj->Get(env->context(), env->stack_string())

.ToLocal(&stack_trace));

report_to_inspector();

break;

}

default:

UNREACHABLE();

}

arrow =

err_obj->GetPrivate(env->context(), env->arrow_message_private_symbol())

.ToLocalChecked();

}

node::Utf8Value trace(env->isolate(), stack_trace);

std::string report_message = "Exception";

// range errors have a trace member set to undefined

if (trace.length() > 0 && !stack_trace->IsUndefined()) {

if (arrow.IsEmpty() || !arrow->IsString() || decorated) {

FPrintF(stderr, "%s\n", trace);

} else {

node::Utf8Value arrow_string(env->isolate(), arrow);

FPrintF(stderr, "%s\n%s\n", arrow_string, trace);

}

} else {

// this really only happens for RangeErrors, since they're the only

// kind that won't have all this info in the trace, or when non-Error

// objects are thrown manually.

MaybeLocal<Value> message;

MaybeLocal<Value> name;

if (error->IsObject()) {

Local<Object> err_obj = error.As<Object>();

message = err_obj->Get(env->context(), env->message_string());

name = err_obj->Get(env->context(), env->name_string());

}

if (message.IsEmpty() || message.ToLocalChecked()->IsUndefined() ||

name.IsEmpty() || name.ToLocalChecked()->IsUndefined()) {

// Not an error object. Just print as-is.

node::Utf8Value message(env->isolate(), error);

FPrintF(

stderr,

"%s\n",

*message ? message.ToStringView() : "<toString() threw exception>");

} else {

node::Utf8Value name_string(env->isolate(), name.ToLocalChecked());

node::Utf8Value message_string(env->isolate(), message.ToLocalChecked());

// Update the report message if it is an object has message property.

report_message = message_string.ToString();

if (arrow.IsEmpty() || !arrow->IsString() || decorated) {

FPrintF(stderr, "%s: %s\n", name_string, message_string);

} else {

node::Utf8Value arrow_string(env->isolate(), arrow);

FPrintF(stderr,

"%s\n%s: %s\n", arrow_string, name_string, message_string);

}

if (!env->options()->trace_uncaught) {

std::string argv0;

if (!env->argv().empty()) argv0 = env->argv()[0];

if (argv0.empty()) argv0 = "node";

auto filesystem_path = std::filesystem::path(argv0).replace_extension();

FPrintF(stderr,

"(Use `%s --trace-uncaught ...` to show where the exception "

"was thrown)\n",

filesystem_path.filename().string());

}

if (env->isolate_data()->options()->report_uncaught_exception) {

TriggerNodeReport(env, report_message, "Exception", "", error);

}

if (env->options()->trace_uncaught) {

Local<StackTrace> trace = message->GetStackTrace();

if (!trace.IsEmpty()) {

FPrintF(stderr, "Thrown at:\n");

PrintStackTrace(env->isolate(), trace);

}

if (env->options()->extra_info_on_fatal_exception) {

FPrintF(stderr, "\nNode.js %s\n", NODE_VERSION);

}

fflush(stderr);

}

[[noreturn]] void OnFatalError(const char* location, const char* message) {

if (location) {

FPrintF(stderr, "FATAL ERROR: %s %s\n", location, message);

} else {

FPrintF(stderr, "FATAL ERROR: %s\n", message);

}

Isolate* isolate = Isolate::TryGetCurrent();

bool report_on_fatalerror;

{

Mutex::ScopedLock lock(node::per_process::cli_options_mutex);

report_on_fatalerror = per_process::cli_options->report_on_fatalerror;

}

if (report_on_fatalerror) {

TriggerNodeReport(isolate, message, "FatalError", "", Local<Object>());

}

fflush(stderr);

ABORT_WITH_DETAILS(location, message);

}

void OOMErrorHandler(const char* location, const v8::OOMDetails& details) {

// We should never recover from this handler so once it's true it's always

// true.

is_in_oom.store(true);

const char* message =

details.is_heap_oom ? "Allocation failed - JavaScript heap out of memory"

: "Allocation failed - process out of memory";

if (location) {

FPrintF(stderr, "FATAL ERROR: %s %s\n", location, message);

} else {

FPrintF(stderr, "FATAL ERROR: %s\n", message);

}

if (details.detail != nullptr) {

FPrintF(stderr, "Reason: %s\n", details.detail);

}

Isolate* isolate = Isolate::TryGetCurrent();

bool report_on_fatalerror;

{

Mutex::ScopedLock lock(node::per_process::cli_options_mutex);

report_on_fatalerror = per_process::cli_options->report_on_fatalerror;

}

if (report_on_fatalerror) {

// Trigger report with the isolate. Environment::GetCurrent may return

// nullptr here:

// - If the OOM is reported by a young generation space allocation,

// Isolate::GetCurrentContext returns an empty handle.

// - Otherwise, Isolate::GetCurrentContext returns a non-empty handle.

TriggerNodeReport(isolate, message, "OOMError", "", Local<Object>());

}

fflush(stderr);

ABORT_WITH_DETAILS(location, message);

}

v8::ModifyCodeGenerationFromStringsResult ModifyCodeGenerationFromStrings(

v8::Local<v8::Context> context,

v8::Local<v8::Value> source,

bool is_code_like) {

HandleScope scope(Isolate::GetCurrent());

if (context->GetNumberOfEmbedderDataFields() <=

ContextEmbedderIndex::kAllowCodeGenerationFromStrings) {

// The context is not (yet) configured by Node.js for this. We don't

// have enough information to make a decision, just allow it which is

// the default.

return {true, {}};

}

Environment* env = Environment::GetCurrent(context);

if (env == nullptr) {

return {true, {}};

}

if (env->source_maps_enabled() && env->can_call_into_js()) {

// We do not expect the maybe_cache_generated_source_map to throw any more

// exceptions. If it does, just ignore it.

errors::TryCatchScope try_catch(env);

Local<Function> maybe_cache_source_map =

env->maybe_cache_generated_source_map();

Local<Value> argv[1] = {source};

MaybeLocal<Value> maybe_cached = maybe_cache_source_map->Call(

context, context->Global(), arraysize(argv), argv);

if (maybe_cached.IsEmpty()) {

DCHECK(try_catch.HasCaught());

}

Local<Value> allow_code_gen = context->GetEmbedderData(

ContextEmbedderIndex::kAllowCodeGenerationFromStrings);

bool codegen_allowed =

allow_code_gen->IsUndefined() || allow_code_gen->IsTrue();

return {

codegen_allowed,

{},

};

}

// Check if an exception is a stack overflow error (RangeError with

// "Maximum call stack size exceeded" message). This is used to handle

// stack overflow specially in TryCatchScope - instead of immediately

// exiting, we can use the red zone to re-throw to user code.

static bool IsStackOverflowError(Isolate* isolate, Local<Value> exception) {

if (!exception->IsNativeError()) return false;

Local<Object> err_obj = exception.As<Object>();

Local<String> constructor_name = err_obj->GetConstructorName();

// Must be a RangeError

Utf8Value name(isolate, constructor_name);

if (name.ToStringView() != "RangeError") return false;

// Check for the specific stack overflow message

Local<Context> context = isolate->GetCurrentContext();

Local<Value> message_val;

if (!err_obj->Get(context, String::NewFromUtf8Literal(isolate, "message"))

.ToLocal(&message_val)) {

return false;

}

if (!message_val->IsString()) return false;

Utf8Value message(isolate, message_val.As<String>());

return message.ToStringView() == "Maximum call stack size exceeded";

}

namespace errors {

TryCatchScope::~TryCatchScope() {

if (HasCaught() && !HasTerminated() && mode_ != CatchMode::kNormal) {

HandleScope scope(env_->isolate());

Local<v8::Value> exception = Exception();

Local<v8::Message> message = Message();

// Special handling for stack overflow errors in async_hooks: instead of

// immediately exiting, re-throw the exception. This allows the exception

// to propagate to user code's try-catch blocks.

if (mode_ == CatchMode::kFatalRethrowStackOverflow &&

IsStackOverflowError(env_->isolate(), exception)) {

ReThrow();

Reset();

return;

}

EnhanceFatalException enhance = CanContinue() ?

EnhanceFatalException::kEnhance : EnhanceFatalException::kDontEnhance;

if (message.IsEmpty())

message = Exception::CreateMessage(env_->isolate(), exception);

ReportFatalException(env_, exception, message, enhance);

env_->Exit(ExitCode::kExceptionInFatalExceptionHandler);

}

const char* errno_string(int errorno) {

#define ERRNO_CASE(e) \

case e: \

return #e;

switch (errorno) {

#ifdef EACCES

ERRNO_CASE(EACCES);

#endif

#ifdef EADDRINUSE

ERRNO_CASE(EADDRINUSE);

#endif

#ifdef EADDRNOTAVAIL

ERRNO_CASE(EADDRNOTAVAIL);

#endif

#ifdef EAFNOSUPPORT

ERRNO_CASE(EAFNOSUPPORT);

#endif

#ifdef EAGAIN

ERRNO_CASE(EAGAIN);

#endif

#ifdef EWOULDBLOCK

#if EAGAIN != EWOULDBLOCK

ERRNO_CASE(EWOULDBLOCK);

#endif

#ifdef EALREADY

ERRNO_CASE(EALREADY);

#endif

#ifdef EBADF

ERRNO_CASE(EBADF);

#endif

#ifdef EBADMSG

ERRNO_CASE(EBADMSG);

#endif

#ifdef EBUSY

ERRNO_CASE(EBUSY);

#endif

#ifdef ECANCELED

ERRNO_CASE(ECANCELED);

#endif

#ifdef ECHILD

ERRNO_CASE(ECHILD);

#endif

#ifdef ECONNABORTED

ERRNO_CASE(ECONNABORTED);

#endif

#ifdef ECONNREFUSED

ERRNO_CASE(ECONNREFUSED);

#endif

#ifdef ECONNRESET

ERRNO_CASE(ECONNRESET);

#endif

#ifdef EDEADLK

ERRNO_CASE(EDEADLK);

#endif

#ifdef EDESTADDRREQ

ERRNO_CASE(EDESTADDRREQ);

#endif

#ifdef EDOM

ERRNO_CASE(EDOM);

#endif

#ifdef EDQUOT

ERRNO_CASE(EDQUOT);

#endif

#ifdef EEXIST

ERRNO_CASE(EEXIST);

#endif

#ifdef EFAULT

ERRNO_CASE(EFAULT);

#endif

#ifdef EFBIG

ERRNO_CASE(EFBIG);

#endif

#ifdef EHOSTUNREACH

ERRNO_CASE(EHOSTUNREACH);

#endif

#ifdef EIDRM

ERRNO_CASE(EIDRM);

#endif

#ifdef EILSEQ

ERRNO_CASE(EILSEQ);

#endif

#ifdef EINPROGRESS

ERRNO_CASE(EINPROGRESS);

#endif

#ifdef EINTR

ERRNO_CASE(EINTR);

#endif

#ifdef EINVAL

ERRNO_CASE(EINVAL);

#endif

#ifdef EIO

ERRNO_CASE(EIO);

#endif

#ifdef EISCONN

ERRNO_CASE(EISCONN);

#endif

#ifdef EISDIR

ERRNO_CASE(EISDIR);

#endif

#ifdef ELOOP

ERRNO_CASE(ELOOP);

#endif

#ifdef EMFILE

ERRNO_CASE(EMFILE);

#endif

#ifdef EMLINK

ERRNO_CASE(EMLINK);

#endif

#ifdef EMSGSIZE

ERRNO_CASE(EMSGSIZE);

#endif

#ifdef EMULTIHOP

ERRNO_CASE(EMULTIHOP);

#endif

#ifdef ENAMETOOLONG

ERRNO_CASE(ENAMETOOLONG);

#endif

#ifdef ENETDOWN

ERRNO_CASE(ENETDOWN);

#endif

#ifdef ENETRESET

ERRNO_CASE(ENETRESET);

#endif

#ifdef ENETUNREACH

ERRNO_CASE(ENETUNREACH);

#endif

#ifdef ENFILE

ERRNO_CASE(ENFILE);

#endif

#ifdef ENOBUFS

ERRNO_CASE(ENOBUFS);

#endif

#ifdef ENODATA

ERRNO_CASE(ENODATA);

#endif

#ifdef ENODEV

ERRNO_CASE(ENODEV);

#endif

#ifdef ENOENT

ERRNO_CASE(ENOENT);

#endif

#ifdef ENOEXEC

ERRNO_CASE(ENOEXEC);

#endif

#ifdef ENOLINK

ERRNO_CASE(ENOLINK);

#endif

#ifdef ENOLCK

#if ENOLINK != ENOLCK

ERRNO_CASE(ENOLCK);

#endif

#ifdef ENOMEM

ERRNO_CASE(ENOMEM);

#endif

#ifdef ENOMSG

ERRNO_CASE(ENOMSG);

#endif

#ifdef ENOPROTOOPT

ERRNO_CASE(ENOPROTOOPT);

#endif

#ifdef ENOSPC

ERRNO_CASE(ENOSPC);

#endif

#ifdef ENOSR

ERRNO_CASE(ENOSR);

#endif

#ifdef ENOSTR

ERRNO_CASE(ENOSTR);

#endif

#ifdef ENOSYS

ERRNO_CASE(ENOSYS);

#endif

#ifdef ENOTCONN

ERRNO_CASE(ENOTCONN);

#endif

#ifdef ENOTDIR

ERRNO_CASE(ENOTDIR);

#endif

#ifdef ENOTEMPTY

#if ENOTEMPTY != EEXIST

ERRNO_CASE(ENOTEMPTY);

#endif

#ifdef ENOTSOCK

ERRNO_CASE(ENOTSOCK);

#endif

#ifdef ENOTSUP

ERRNO_CASE(ENOTSUP);

#else

#ifdef EOPNOTSUPP

ERRNO_CASE(EOPNOTSUPP);

#endif

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