Emilio Cobos Álvarez
b2e224354b
Using operator= is not quite sound in presence of destructors and operator overloading. It's perfectly fine to assume that the left-hand-side of an operator= expression is valid memory, however we're using uninitialized memory here, that may not be the case. Use placement new to properly construct tagged unions. I don't need this with any urgency, but it's the right thing to do in presence of complex types, and the current code seems a bomb waiting to explode :)
49 lines
689 B
C++
49 lines
689 B
C++
#include <cstdarg>
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#include <cstdint>
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#include <cstdlib>
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#include <new>
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#if (defined(PLATFORM_WIN) || defined(M_32))
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enum class BarType : uint32_t {
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A,
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B,
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C,
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};
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#endif
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#if (defined(PLATFORM_UNIX) && defined(X11))
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enum class FooType : uint32_t {
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A,
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B,
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C,
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};
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#endif
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#if (defined(PLATFORM_UNIX) && defined(X11))
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struct FooHandle {
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FooType ty;
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int32_t x;
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float y;
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};
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#endif
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#if (defined(PLATFORM_WIN) || defined(M_32))
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struct BarHandle {
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BarType ty;
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int32_t x;
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float y;
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};
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#endif
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extern "C" {
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#if (defined(PLATFORM_UNIX) && defined(X11))
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void root(FooHandle a);
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#endif
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#if (defined(PLATFORM_WIN) || defined(M_32))
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void root(BarHandle a);
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#endif
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} // extern "C"
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