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New posts in 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

Array-pointer arithmetic - legal and undefined behaviour [closed]

c++ c arrays pointers undefined-behavior

"Cannot read property of '<propName>' of undefined" even though it's defined

javascript node.js undefined-behavior

Defining "reduce" on a list in scheme

recursion scheme undefined-behavior fold operation

Is sum+++i undefined behavior in C? [duplicate]

c language-lawyer undefined-behavior

Is it UB to skip the destructor of a derived class before doing a placement new on a base class?

c++ undefined-behavior lifetime

[] precedence over * operator

c undefined-behavior

Implementation of std::start_lifetime_as()

c++ undefined-behavior lifetime strict-aliasing c++23
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