Fix cannot convert 'pgm_p' to 'const void*' (fixes #1707)

extras/tests/MixedConfiguration/CMakeLists.txt

@@ -16,6 +16,7 @@ add_executable(MixedConfigurationTests
 	enable_progmem_1.cpp
 	enable_string_deduplication_0.cpp
 	enable_string_deduplication_1.cpp
+	issue1707.cpp
 	use_double_0.cpp
 	use_double_1.cpp
 )

extras/tests/MixedConfiguration/issue1707.cpp

@@ -0,0 +1,17 @@
+// ArduinoJson - https://arduinojson.org
+// Copyright © 2014-2022, Benoit BLANCHON
+// MIT License
+
+#define ARDUINO
+#define memcpy_P(dest, src, n) memcpy((dest), (src), (n))
+
+#include <ArduinoJson.h>
+
+#include <catch.hpp>
+
+TEST_CASE("Issue1707") {
+  StaticJsonDocument<128> doc;
+
+  DeserializationError err = deserializeJson(doc, F("{\"hello\":12}"));
+  REQUIRE(err == DeserializationError::Ok);
+}