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fixing GCC and Clang warnings and errors

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This commit is contained in:
Mathew Sutcliffe
2014-07-16 22:18:13 +01:00
parent cd82c7f55d
commit db6c6a6331
3 changed files with 21 additions and 7 deletions
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21
src/blackmisc/optional.h
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@@ -75,20 +75,33 @@ namespace BlackMisc
explicit operator bool() const { return m_isValid; }
//! Dereference operator, returns reference to contained value, undefined if there is no value contained.
T &operator *() { Q_ASSERT(m_isValid); return *reinterpret_cast<T *>(m_bytes); }
T &operator *() { return dereference(); }
//! Dereference operator, returns reference to contained value, undefined if there is no value contained.
const T &operator *() const { Q_ASSERT(m_isValid); return *reinterpret_cast<const T *>(m_bytes); }
const T &operator *() const { return dereference(); }
//! Indirection operator, returns pointer to contained value, undefined if there is no value contained.
T *operator ->() { Q_ASSERT(m_isValid); return reinterpret_cast<T *>(m_bytes); }
T *operator ->() { return &dereference(); }
//! Indirection operator, returns pointer to contained value, undefined if there is no value contained.
const T *operator ->() const { Q_ASSERT(m_isValid); return reinterpret_cast<const T *>(m_bytes); }
const T *operator ->() const { return &dereference(); }
private:
bool m_isValid;
#if defined(Q_COMPILER_UNRESTRICTED_UNIONS)
T &dereference() { Q_ASSERT(m_isValid); return m_obj; }
const T &dereference() const { Q_ASSERT(m_isValid); return m_obj; }
union
{
char m_bytes[sizeof(T)];
T m_obj;
};
#else
T &dereference() { Q_ASSERT(m_isValid); return *reinterpret_cast<T *>(m_bytes); }
const T &dereference() const { Q_ASSERT(m_isValid); return *reinterpret_cast<const T *>(m_bytes); }
char m_bytes[sizeof(T)];
#endif
};
/*!