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Using unions with arrays of non-trivial types

score 64 · Answer 1 · 2024-03-24T09:03:11.173000

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Using unions with arrays of non-trivial types

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Union structs with uint16_t and two uint8_t variables results in 3 byte long allocation?

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Can you implicitly activate array member of union in a C++20 constexpr constructor?

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score 76 · Answer 12 · 2023-10-29T09:05:00.853000

Union of unsigned short and anonymous bitfield

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Difference between packing a struct vs union vs enum

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Active member of a union created directly through memcpy() or std::bit_cast()?

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208 views Asked by Jan Schultke At 23 September 2023 at 11:14

TechQA.

List Question

Using unions with arrays of non-trivial types

Using a undefined structure is not throwing an error

eBPF program fails to attach because of null pointer exception

Union structs with uint16_t and two uint8_t variables results in 3 byte long allocation?

Zig - Initializing a slice literal of union enum

Do pointers to different types match the "common initial sequence" rule?

Define variable as member of c union?

What is the right syntax for declaring members that are struct or union?

How do initial members, common initial sequences, anonymous unions, and strict aliasing interact in C?

Can I create color struct that works on different endians?

Can you implicitly activate array member of union in a C++20 constexpr constructor?

Union of unsigned short and anonymous bitfield

How can I do short string optimization at compile time?

Defined behaviour for union with 24-bit and 8-bit vars

Difference between packing a struct vs union vs enum

Active member of a union created directly through memcpy() or std::bit_cast()?

Union vs void pointer performance

Is accessing a member of an unaligned union undefined behavior even if the member being accessed is sufficiently aligned?

I can't pinpoint why memory gets corrupted while working with Recursive Tagged Union in Zig

Is the author's union-based implementation of an optional<bool> well-defined in P2641?

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