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New posts in undefined-behavior

Could deleting complete class type result in undefined behavior?

c++ undefined-behavior

Accessing a struct member from what is not the same struct type

c pointers struct undefined-behavior

Example of undefined behaviour involving the use of const_cast

c++ gcc constants compiler-optimization undefined-behavior

Why output of array to pointer is not related

c++ arrays pointers scope undefined-behavior

Unexpected bitshift behavior in C [duplicate]

c undefined-behavior bit-shift

Downcast to derived class in CRTP base class constructor: UB or not? [duplicate]

c++ language-lawyer undefined-behavior crtp downcast

Does undefined behaviour retroactively mean that earlier visible side-effects aren't guaranteed?

c gcc language-lawyer compiler-optimization undefined-behavior

Is this declaration UB?

c language-lawyer undefined-behavior

Polymorphic update on struct fields in Rust

rust undefined-behavior unsafe

Is it undefined behaviour to use pointer after allocated memory?

c language-lawyer undefined-behavior

Is accessing arrays out-of-bounds legal if what lies beyond those bounds is known in C? If not why not and how can this be worked around?

arrays c undefined-behavior

Preincrement vs postincrement in terms of sequence points

c++ c++14 language-lawyer increment undefined-behavior

Function argument evaluation and side effects

c++ c++17 language-lawyer undefined-behavior side-effects

Is it really well defined to check pointer alignment using the pointer's integer value?

c++ pointers c++17 language-lawyer undefined-behavior

What does the C++ standard says for algorithms when first <= last is not fulfilled?

c++ algorithm language-lawyer undefined-behavior std

Why does this std::weak_ptr apparently prevent freeing memory, and how can I detect this bug?

c++ valgrind undefined-behavior address-sanitizer weak-ptr

Can I assign a callable to a std::function with a different return type?

c++ undefined-behavior std-function

Is it OK to pass the address of an int for scanf("%x", ...)?

c scanf language-lawyer undefined-behavior

Is bitwise aritmetic on pointers defined behavior?

c pointers undefined-behavior null-pointer
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