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n-api: avoid crash in napi_escape_scope() #13651

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n-api: avoid crash in napi_escape_scope() #13651

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n-api: avoid crash in napi_escape_scope()
mhdawson Jun 13, 2017
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mhdawson Jun 15, 2017
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mhdawson Jun 16, 2017
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mhdawson Jun 20, 2017
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12 changes: 6 additions & 6 deletions src/node_api.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -157,19 +157,19 @@ class HandleScopeWrapper {
class EscapableHandleScopeWrapper {
public:
explicit EscapableHandleScopeWrapper(v8::Isolate* isolate) :
scope(isolate), escapeCalled(false) {}
bool escapeAllreadyCalled(void) {
return escapeCalled;
scope(isolate), _escapeCalled(false) {}
bool escapeAlreadyCalled(void) {
return _escapeCalled;
}
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@bnoordhuis bnoordhuis Jun 15, 2017

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Style issues: method should be bool escape_called() const {, the data member should be escape_called_.

template <typename T>
v8::Local<T> Escape(v8::Local<T> handle) {
escapeCalled = true;
_escapeCalled = true;
return scope.Escape(handle);
}

private:
v8::EscapableHandleScope scope;
bool escapeCalled;
bool _escapeCalled;
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@jasnell jasnell Jun 15, 2017

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just an extremely minor nit... in various places in core we use _ as a suffix on private fields, in others we seem to use it as a prefix. It would be great to have consistency there.

};

napi_handle_scope JsHandleScopeFromV8HandleScope(HandleScopeWrapper* s) {
Expand Down Expand Up @@ -2218,7 +2218,7 @@ napi_status napi_escape_handle(napi_env env,

v8impl::EscapableHandleScopeWrapper* s =
v8impl::V8EscapableHandleScopeFromJsEscapableHandleScope(scope);
if (!s->escapeAllreadyCalled()) {
if (!s->escapeAlreadyCalled()) {
*result = v8impl::JsValueFromV8LocalValue(
s->Escape(v8impl::V8LocalValueFromJsValue(escapee)));
return napi_clear_last_error(env);
Expand Down