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Updated Compatibility issues (markdown)

Benoît Blanchon
2016-12-27 11:17:10 +01:00
parent cbca5d9248
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Compatibility-issues.md

@@ -6,6 +6,7 @@
- [Warning: ignoring packed attribute because of unpacked non-POD field](#warning-ignoring-packed-attribute-because-of-unpacked-non-pod-field) - [Warning: ignoring packed attribute because of unpacked non-POD field](#warning-ignoring-packed-attribute-because-of-unpacked-non-pod-field)
- [Error: undefined reference to `__cxa_guard_acquire` and `__cxa_guard_release`](#error-undefined-reference-to-cxaguardacquire-and-cxaguardrelease) - [Error: undefined reference to `__cxa_guard_acquire` and `__cxa_guard_release`](#error-undefined-reference-to-cxaguardacquire-and-cxaguardrelease)
- [Adafruit WICED](#adafruit-wiced) - [Adafruit WICED](#adafruit-wiced)
- [ESP32](#esp32)
<!-- /MarkdownTOC --> <!-- /MarkdownTOC -->
@@ -78,3 +79,20 @@ error: cannot convert 'err_t' to 'err_t (*)()
``` ```
See issue [#404](https://github.com/bblanchon/ArduinoJson/issues/404) See issue [#404](https://github.com/bblanchon/ArduinoJson/issues/404)
## ESP32
There is currently a bug in the [Arduino Core for ESP32](https://github.com/espressif/arduino-esp32) causing the following error:
```
error: redefinition of 'struct ArduinoJson::Internals::StringFuncs<const char*>'
```
The solution is to disable `PROGMEM` support in ArduinoJson.
To do that, just add the following line at the top of your program:
```c++
#define ARDUINOJSON_ENABLE_PROGMEM 0
```
See issue [#407](https://github.com/bblanchon/ArduinoJson/issues/407)