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Fixed warning "cast-align" (issue #914)

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This commit is contained in:
Benoit Blanchon
2019-02-28 17:20:01 +01:00
parent d6e7709866
commit f3265d2111
4 changed files with 10 additions and 5 deletions
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1
CHANGELOG.md
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@@ -5,6 +5,7 @@ HEAD
----
* Fixed warning "unused variable" with GCC 4.4 (issue #912)
* Fixed warning "cast increases required alignment" (issue #914)
* Added a clear error message for `StaticJsonBuffer` and `DynamicJsonBuffer`
v6.9.0 (2019-02-26)

6
src/ArduinoJson/Array/ArrayRef.hpp
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@@ -23,7 +23,8 @@ template <typename TData>
class ArrayRefBase {
public:
operator VariantConstRef() const {
return VariantConstRef(reinterpret_cast<const VariantData*>(_data));
const void* data = _data; // prevent warning cast-align
return VariantConstRef(reinterpret_cast<const VariantData*>(data));
}
template <typename Visitor>
@@ -94,7 +95,8 @@ class ArrayRef : public ArrayRefBase<CollectionData>,
: base_type(data), _pool(pool) {}
operator VariantRef() {
return VariantRef(_pool, reinterpret_cast<VariantData*>(_data));
void* data = _data; // prevent warning cast-align
return VariantRef(_pool, reinterpret_cast<VariantData*>(data));
}
operator ArrayConstRef() const {

2
src/ArduinoJson/Memory/MemoryPool.hpp
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@@ -91,7 +91,7 @@ class MemoryPool {
return reinterpret_cast<T*>(allocRight(sizeof(T)));
}
char* allocRight(size_t bytes) {
void* allocRight(size_t bytes) {
if (!canAlloc(bytes)) return 0;
_right -= bytes;
return _right;

6
src/ArduinoJson/Object/ObjectRef.hpp
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@@ -18,7 +18,8 @@ template <typename TData>
class ObjectRefBase {
public:
operator VariantConstRef() const {
return VariantConstRef(reinterpret_cast<const VariantData*>(_data));
const void* data = _data; // prevent warning cast-align
return VariantConstRef(reinterpret_cast<const VariantData*>(data));
}
template <typename Visitor>
@@ -140,7 +141,8 @@ class ObjectRef : public ObjectRefBase<CollectionData>,
: base_type(data), _pool(buf) {}
operator VariantRef() const {
return VariantRef(_pool, reinterpret_cast<VariantData*>(_data));
void* data = _data; // prevent warning cast-align
return VariantRef(_pool, reinterpret_cast<VariantData*>(data));
}
operator ObjectConstRef() const {