Kartikaya Gupta
5f6b223237
Ideally we'd just do this when we need it, but the ostream derivation will be controlled by both global config and per-structure config, so it's hard to know exactly when we need it and when we don't.
39 lines
639 B
C++
39 lines
639 B
C++
#define MUST_USE_FUNC __attribute__((warn_unused_result))
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#define MUST_USE_STRUCT __attribute__((warn_unused))
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#define MUST_USE_ENUM /* nothing */
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#include <cstdarg>
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#include <cstdint>
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#include <cstdlib>
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#include <ostream>
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#include <new>
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template<typename T>
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struct MUST_USE_STRUCT MaybeOwnedPtr {
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enum class MUST_USE_ENUM Tag : uint8_t {
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Owned,
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None,
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};
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struct Owned_Body {
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T *_0;
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};
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Tag tag;
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union {
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Owned_Body owned;
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};
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};
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template<typename T>
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struct MUST_USE_STRUCT OwnedPtr {
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T *ptr;
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};
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extern "C" {
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MUST_USE_FUNC MaybeOwnedPtr<int32_t> maybe_consume(OwnedPtr<int32_t> input);
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} // extern "C"
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