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 :)
41 lines
516 B
C++
41 lines
516 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(DEFINE_FREEBSD)
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struct NoExternTy {
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uint8_t field;
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};
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#endif
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#if !defined(DEFINE_FREEBSD)
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struct ContainsNoExternTy {
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NoExternTy field;
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};
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#endif
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#if defined(DEFINE_FREEBSD)
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struct ContainsNoExternTy {
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uint64_t field;
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};
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#endif
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struct RenamedTy {
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uint64_t y;
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};
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struct Foo {
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int32_t x;
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};
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extern "C" {
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void no_extern_func(ContainsNoExternTy a);
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void renamed_func(RenamedTy a);
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void root(Foo a);
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} // extern "C"
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