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New posts in undefined-behavior

Is it legal to use the address of a member to initialize a base-class?

c++ initialization undefined-behavior

Can alloca() cause stack corruption in a variadic function when arguments are mismatched?

c undefined-behavior variadic-functions alloca stack-corruption

UBSAN reports: -875 << 7 as undefined behaviour

c bit-manipulation undefined-behavior ubsan

Does dereferencing void**-casted type** break strict aliasing?

c undefined-behavior strict-aliasing

Using offsetof for template classes

c++ language-lawyer undefined-behavior offsetof

Safest way to efficiently modify set element that is used as a key

c++ performance set undefined-behavior

Can all bits 0 be a trap representation for integers?

c language-lawyer undefined-behavior calloc

Can an union's destructor be trivial?

c++ language-lawyer undefined-behavior unions

Passing uninitialized variables safety

c++ function undefined-behavior

Passing a temporary by const pointer instead of const reference; is this workaround well-formed?

c++ language-lawyer undefined-behavior lifetime

initial or terminal malloc buffer possible?

c for-loop pointers malloc undefined-behavior

Why does static_cast conversion speed up an un-optimized build of my integer division function?

c++ assembly type-conversion x86-64 undefined-behavior

Does calling an empty function in C invoke UB?

c undefined-behavior

Out of bounds pointer arithmetic not detected?

c++ undefined-behavior

Will gcc skip this check for signed integer overflow?

c++ gcc undefined-behavior integer-overflow

Modifying object representation in presence of padding bits

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

How can I move std::tuple elements out of a class object?

c++ c++14 undefined-behavior move-semantics stdtuple

Is signed integer overflow undefined behaviour or implementation defined?

c undefined-behavior implementation-defined-behavior

Is INT_MIN * -1 a no-op on x86?

x86 undefined-behavior signed integer-overflow

Is using enum class for flags undefined behavior?

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