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New posts in undefined-behavior

Is using std::span into an std::vector after push_back is called undefined behavior

c++ vector undefined-behavior ownership-semantics std-span

How to access an object representation according to the c++ standard?

c++ pointers object language-lawyer undefined-behavior

How to check if a string passed as argument is a modifiable string

c string assert undefined-behavior string-literals

Is returning a pointer to a local variable always undefined behavior [duplicate]

c++ function pointers local undefined-behavior

Should a boolean predicate for std::condition_variable be volatile in C++?

c++ multithreading c++11 undefined-behavior std

Is it technically UB to static_cast<A*>(memmove(dst, (void*)src, sizeof(src))) since C++20?

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

Difference between array and pointer to string literal

c memory-management undefined-behavior

Is casting `the address of a pointer to a struct` to `the address of a struct whos first member is a pointer to the struct` UB?

c++ undefined-behavior reinterpret-cast pointer-conversion

Does undefined behavior only concern an execution of program, or can it concern a program itself?

c++ language-lawyer undefined-behavior

Can I "over-extend" an array by allocating more space to the enclosing struct?

c arrays language-lawyer undefined-behavior flexible-array-member

Why is optimization forbidden if a C compiler cannot prove lack of UB?

c optimization compiler-optimization undefined-behavior integer-overflow

Generating prefix bitmasks

c++ c bit-manipulation undefined-behavior branchless

Undefined behaviour in (X)HTML?

html xhtml undefined-behavior

Is std::begin on an empty std::valarray undefined behavior?

c++ undefined-behavior libstdc++ valarray

Examples using reinterpret_cast that do not trigger UB

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

Why doesn't strict aliasing rule apply to int* and unsigned*?

c language-lawyer compiler-optimization undefined-behavior strict-aliasing

default parameters in function call in C

c function parameters default undefined-behavior

Is decrement of bool variable defined in С?

c boolean increment undefined-behavior decrement

strange behavior of scanf for short int

c scanf undefined-behavior

Can a function be marked noexcept if it takes a value type that may throw?

c++ c++11 exception undefined-behavior noexcept
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