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  • Benoît Blanchon
  • ArduinoJson
  • Issues
  • #415
Closed
Open
Issue created Jan 10, 2017 by Administrator@rootContributor

error: invalid conversion from 'volatile void*' to 'const void*'

Created by: akastulin

Hi Guys, My board is ESP8266. After upgrading to 5.8 start getting the following error: In file included from /Users/user/Documents/Arduino/libraries/ArduinoJson/include/ArduinoJson/Deserialization/../Serialization/../StringTraits/ArduinoStream.hpp:11:0, from /Users/user/Documents/Arduino/libraries/ArduinoJson/include/ArduinoJson/Deserialization/../Serialization/../StringTraits/StringTraits.hpp:37, from /Users/user/Documents/Arduino/libraries/ArduinoJson/include/ArduinoJson/Deserialization/../Serialization/DynamicStringBuilder.hpp:11, from /Users/user/Documents/Arduino/libraries/ArduinoJson/include/ArduinoJson/Deserialization/../Serialization/JsonPrintable.hpp:13, from /Users/user/Documents/Arduino/libraries/ArduinoJson/include/ArduinoJson/Deserialization/../JsonVariantBase.hpp:12, from /Users/user/Documents/Arduino/libraries/ArduinoJson/include/ArduinoJson/Deserialization/../JsonVariant.hpp:16, from /Users/user/Documents/Arduino/libraries/ArduinoJson/include/ArduinoJson/Deserialization/../JsonBuffer.hpp:14, from /Users/user/Documents/Arduino/libraries/ArduinoJson/include/ArduinoJson/Deserialization/JsonParser.hpp:10, from /Users/user/Documents/Arduino/libraries/ArduinoJson/include/ArduinoJson/JsonBufferBase.hpp:10, from /Users/user/Documents/Arduino/libraries/ArduinoJson/include/ArduinoJson/DynamicJsonBuffer.hpp:10, from /Users/user/Documents/Arduino/libraries/ArduinoJson/include/ArduinoJson.hpp:10, from /Users/user/Documents/Arduino/libraries/ArduinoJson/include/ArduinoJson.h:8, from /Users/user/Documents/Arduino/libraries/ArduinoJson/ArduinoJson.h:8, from sketch/Client.h:4, from /Users/user/Documents/Arduino/NodeMCUSensorsV4.6/NodeMCUSensorsV4.6.ino:11: /Users/user/Documents/Arduino/libraries/ArduinoJson/include/ArduinoJson/Deserialization/../Serialization/../StringTraits/../TypeTraits/IsBaseOf.hpp: In instantiation of 'class ArduinoJson::TypeTraits::IsBaseOf<Stream, const volatile int>': /Users/user/Documents/Arduino/libraries/ArduinoJson/include/ArduinoJson/JsonObject.hpp:165:56: required from 'bool ArduinoJson::JsonObject::setNodeAt(TStringRef, TValueRef) [with TStringRef = const char*; TValueRef = const volatile int&]' /Users/user/Documents/Arduino/libraries/ArduinoJson/include/ArduinoJson/JsonObject.hpp:78:19: required from 'bool ArduinoJson::JsonObject::set(const TString&, const TValue&) [with TValue = volatile int; TString = const char*]' /Users/user/Documents/Arduino/libraries/ArduinoJson/include/ArduinoJson/JsonObjectSubscript.hpp:42:5: required from 'ArduinoJson::JsonObjectSubscript& ArduinoJson::JsonObjectSubscript::operator=(const T&) [with T = volatile int; TString = char [12]]' /Users/user/Documents/Arduino/NodeMCUSensorsV4.6/NodeMCUSensorsV4.6.ino:424:21: required from here /Users/user/Documents/Arduino/libraries/ArduinoJson/include/ArduinoJson/Deserialization/../Serialization/../StringTraits/../TypeTraits/IsBaseOf.hpp:26:57: error: invalid conversion from 'const volatile void*' to 'const void*' [-fpermissive] value = sizeof(probe(reinterpret_cast<TDerived >(0))) == sizeof(Yes) ^ /Users/user/Documents/Arduino/libraries/ArduinoJson/include/ArduinoJson/Deserialization/../Serialization/../StringTraits/../TypeTraits/IsBaseOf.hpp:22:14: error: initializing argument 1 of 'static char (& ArduinoJson::TypeTraits::IsBaseOf<TBase, TDerived>::probe(const void))[2] [with TBase = Stream; TDerived = const volatile int; ArduinoJson::TypeTraits::IsBaseOf<TBase, TDerived>::No = char [2]]' [-fpermissive] static No &probe(const void ); ^ /Users/user/Documents/Arduino/libraries/ArduinoJson/include/ArduinoJson/Deserialization/../Serialization/../StringTraits/../TypeTraits/IsBaseOf.hpp: In instantiation of 'class ArduinoJson::TypeTraits::IsBaseOf<Stream, volatile int>': /Users/user/Documents/Arduino/libraries/ArduinoJson/include/ArduinoJson/Deserialization/../Serialization/../StringTraits/StringTraits.hpp:19:8: required from 'struct ArduinoJson::Internals::StringFuncs<const volatile int, void>' /Users/user/Documents/Arduino/libraries/ArduinoJson/include/ArduinoJson/Deserialization/../Serialization/../StringTraits/StringTraits.hpp:22:8: required from 'struct ArduinoJson::Internals::StringFuncs<const volatile int&, void>' /Users/user/Documents/Arduino/libraries/ArduinoJson/include/ArduinoJson/JsonObject.hpp:165:56: required from 'bool ArduinoJson::JsonObject::setNodeAt(TStringRef, TValueRef) [with TStringRef = const char; TValueRef = const volatile int&]' /Users/user/Documents/Arduino/libraries/ArduinoJson/include/ArduinoJson/JsonObject.hpp:78:19: required from 'bool ArduinoJson::JsonObject::set(const TString&, const TValue&) [with TValue = volatile int; TString = const char*]' /Users/user/Documents/Arduino/libraries/ArduinoJson/include/ArduinoJson/JsonObjectSubscript.hpp:42:5: required from 'ArduinoJson::JsonObjectSubscript& ArduinoJson::JsonObjectSubscript::operator=(const T&) [with T = volatile int; TString = char [12]]' /Users/user/Documents/Arduino/NodeMCUSensorsV4.6/NodeMCUSensorsV4.6.ino:424:21: required from here /Users/user/Documents/Arduino/libraries/ArduinoJson/include/ArduinoJson/Deserialization/../Serialization/../StringTraits/../TypeTraits/IsBaseOf.hpp:26:57: error: invalid conversion from 'volatile void*' to 'const void*' [-fpermissive] value = sizeof(probe(reinterpret_cast<TDerived >(0))) == sizeof(Yes) ^ /Users/user/Documents/Arduino/libraries/ArduinoJson/include/ArduinoJson/Deserialization/../Serialization/../StringTraits/../TypeTraits/IsBaseOf.hpp:22:14: error: initializing argument 1 of 'static char (& ArduinoJson::TypeTraits::IsBaseOf<TBase, TDerived>::probe(const void))[2] [with TBase = Stream; TDerived = volatile int; ArduinoJson::TypeTraits::IsBaseOf<TBase, TDerived>::No = char [2]]' [-fpermissive] static No &probe(const void *); ^

However adding the line #define ARDUINOJSON_ENABLE_ARDUINO_STREAM 0 muted the issue. Thank you

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