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New posts in undefined-behavior

Is using enum class for flags undefined behavior?

c++ c++20 undefined-behavior enum-class

Is it undefined behavior in C to cast function pointers operating on derived structs up to functions operating on the base type?

c struct casting function-pointers undefined-behavior

Does casting to an unrelated reference type violate the strict aliasing rule?

c++ language-lawyer undefined-behavior reinterpret-cast strict-aliasing

Unexpected memcpy on uncopyable & unmovable type when using co_await

c++ undefined-behavior copy-elision c++-coroutine

C++23 range-based for loop lifetime fixes interraction with `std::generator` arguments

c++ for-loop generator undefined-behavior c++23

Is use of uninitialized static object well-defined in C++?

c++ initialization undefined-behavior

Rust FFI and Aliasing: C -> Rust -> C -> Rust call stacks with C values being aliased: Undefined Behaviour?

rust undefined-behavior ffi

How does casting and calling obj_msgSend() not invoke undefined behavior?

c objective-c function-pointers undefined-behavior objc-message-send

std::bit_cast padding and undefined behavior

c++ language-lawyer c++20 undefined-behavior bit-cast

Is dereference null pointer UB in C++20?

c++ language-lawyer c++20 undefined-behavior

Is the use of unknown escape sequence invokes undefined behavior in C++?

c++ special-characters undefined-behavior

Little endian and overwriting memory location

c memory undefined-behavior endianness
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