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n-api: add missing exception checking #19362

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n-api: add missing exception checking #19362

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12 changes: 8 additions & 4 deletions src/node_api.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -2801,11 +2801,15 @@ napi_status napi_make_callback(napi_env env,
isolate, v8recv, v8func, argc,
reinterpret_cast<v8::Local<v8::Value>*>(const_cast<napi_value*>(argv)),
*node_async_context);
CHECK_MAYBE_EMPTY(env, callback_result, napi_generic_failure);

if (result != nullptr) {
*result = v8impl::JsValueFromV8LocalValue(
callback_result.ToLocalChecked());
if (try_catch.HasCaught()) {
return napi_set_last_error(env, napi_pending_exception);
} else {
CHECK_MAYBE_EMPTY(env, callback_result, napi_generic_failure);
if (result != nullptr) {
*result = v8impl::JsValueFromV8LocalValue(
callback_result.ToLocalChecked());
}
}

return GET_RETURN_STATUS(env);
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15 changes: 14 additions & 1 deletion test/addons-napi/test_make_callback_recurse/binding.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -13,9 +13,22 @@ napi_value MakeCallback(napi_env env, napi_callback_info info) {
napi_value recv = args[0];
napi_value func = args[1];

napi_make_callback(env, nullptr /* async_context */,
napi_status status = napi_make_callback(env, nullptr /* async_context */,
recv, func, 0 /* argc */, nullptr /* argv */, nullptr /* result */);

bool isExceptionPending;
NAPI_CALL(env, napi_is_exception_pending(env, &isExceptionPending));
if (isExceptionPending && !(status == napi_pending_exception)) {
// if there is an exception pending we don't expect any
// other error
napi_value pending_error;
status = napi_get_and_clear_last_exception(env, &pending_error);
NAPI_CALL(env,
napi_throw_error((env),
nullptr,
"error when only pending exception expected"));
}

return recv;
}

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