Fix libutils_binder_sdk build warnings
-Wclass-memaccess
-Winvalid-offsetof
-Wsequence-point
-Wzero-as-null-pointer-constant (turned on in ag/4503295)
Bug: 285204695
Test: m libutils_binder_sdk
Change-Id: I5b988f498cb8e0cf04617a4f7fd41ba9970d321d
diff --git a/libutils/binder/Android.bp b/libutils/binder/Android.bp
index 54b98af..e358391 100644
--- a/libutils/binder/Android.bp
+++ b/libutils/binder/Android.bp
@@ -22,6 +22,12 @@
"VectorImpl.cpp",
],
+ cflags: [
+ "-Winvalid-offsetof",
+ "-Wsequence-point",
+ "-Wzero-as-null-pointer-constant",
+ ],
+
apex_available: [
"//apex_available:anyapex",
"//apex_available:platform",
diff --git a/libutils/binder/SharedBuffer.cpp b/libutils/binder/SharedBuffer.cpp
index 3e703db..d16bdb0 100644
--- a/libutils/binder/SharedBuffer.cpp
+++ b/libutils/binder/SharedBuffer.cpp
@@ -75,7 +75,7 @@
LOG_ALWAYS_FATAL_IF((newSize >= (SIZE_MAX - sizeof(SharedBuffer))),
"Invalid buffer size %zu", newSize);
- buf = (SharedBuffer*)realloc(buf, sizeof(SharedBuffer) + newSize);
+ buf = (SharedBuffer*)realloc(reinterpret_cast<void*>(buf), sizeof(SharedBuffer) + newSize);
if (buf != nullptr) {
buf->mSize = newSize;
return buf;
diff --git a/libutils/binder/String16.cpp b/libutils/binder/String16.cpp
index 07a3d23..96e1477 100644
--- a/libutils/binder/String16.cpp
+++ b/libutils/binder/String16.cpp
@@ -22,6 +22,19 @@
#include "SharedBuffer.h"
+#define LIBUTILS_PRAGMA(arg) _Pragma(#arg)
+#if defined(__clang__)
+#define LIBUTILS_PRAGMA_FOR_COMPILER(arg) LIBUTILS_PRAGMA(clang arg)
+#elif defined(__GNUC__)
+#define LIBUTILS_PRAGMA_FOR_COMPILER(arg) LIBUTILS_PRAGMA(GCC arg)
+#else
+#define LIBUTILS_PRAGMA_FOR_COMPILER(arg)
+#endif
+#define LIBUTILS_IGNORE(warning_flag) \
+ LIBUTILS_PRAGMA_FOR_COMPILER(diagnostic push) \
+ LIBUTILS_PRAGMA_FOR_COMPILER(diagnostic ignored warning_flag)
+#define LIBUTILS_IGNORE_END() LIBUTILS_PRAGMA_FOR_COMPILER(diagnostic pop)
+
namespace android {
static const StaticString16 emptyString(u"");
@@ -347,7 +360,9 @@
bool String16::isStaticString() const {
// See String16.h for notes on the memory layout of String16::StaticData and
// SharedBuffer.
+ LIBUTILS_IGNORE("-Winvalid-offsetof")
static_assert(sizeof(SharedBuffer) - offsetof(SharedBuffer, mClientMetadata) == 4);
+ LIBUTILS_IGNORE_END()
const uint32_t* p = reinterpret_cast<const uint32_t*>(mString);
return (*(p - 1) & kIsSharedBufferAllocated) == 0;
}
@@ -355,7 +370,9 @@
size_t String16::staticStringSize() const {
// See String16.h for notes on the memory layout of String16::StaticData and
// SharedBuffer.
+ LIBUTILS_IGNORE("-Winvalid-offsetof")
static_assert(sizeof(SharedBuffer) - offsetof(SharedBuffer, mClientMetadata) == 4);
+ LIBUTILS_IGNORE_END()
const uint32_t* p = reinterpret_cast<const uint32_t*>(mString);
return static_cast<size_t>(*(p - 1));
}
diff --git a/libutils/binder/include/utils/RefBase.h b/libutils/binder/include/utils/RefBase.h
index f03e1be..b6a8707 100644
--- a/libutils/binder/include/utils/RefBase.h
+++ b/libutils/binder/include/utils/RefBase.h
@@ -555,7 +555,7 @@
wp<T>::wp(T* other)
: m_ptr(other)
{
- m_refs = other ? m_refs = other->createWeak(this) : nullptr;
+ m_refs = other ? other->createWeak(this) : nullptr;
}
template <typename T>
@@ -662,8 +662,7 @@
template<typename T> template<typename U>
wp<T>& wp<T>::operator = (const sp<U>& other)
{
- weakref_type* newRefs =
- other != nullptr ? other->createWeak(this) : 0;
+ weakref_type* newRefs = other != nullptr ? other->createWeak(this) : nullptr;
U* otherPtr(other.m_ptr);
if (m_ptr) m_refs->decWeak(this);
m_ptr = otherPtr;
@@ -695,8 +694,8 @@
{
if (m_ptr) {
m_refs->decWeak(this);
- m_refs = 0;
- m_ptr = 0;
+ m_refs = nullptr;
+ m_ptr = nullptr;
}
}
diff --git a/libutils/binder/include/utils/TypeHelpers.h b/libutils/binder/include/utils/TypeHelpers.h
index 21d9b3d..007036b 100644
--- a/libutils/binder/include/utils/TypeHelpers.h
+++ b/libutils/binder/include/utils/TypeHelpers.h
@@ -200,7 +200,7 @@
typename std::enable_if<use_trivial_move<TYPE>::value>::type
inline
move_forward_type(TYPE* d, const TYPE* s, size_t n = 1) {
- memmove(d, s, n*sizeof(TYPE));
+ memmove(reinterpret_cast<void*>(d), s, n * sizeof(TYPE));
}
template<typename TYPE>
@@ -227,7 +227,7 @@
typename std::enable_if<use_trivial_move<TYPE>::value>::type
inline
move_backward_type(TYPE* d, const TYPE* s, size_t n = 1) {
- memmove(d, s, n*sizeof(TYPE));
+ memmove(reinterpret_cast<void*>(d), s, n * sizeof(TYPE));
}
template<typename TYPE>