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New posts in undefined-behavior

Does offsetof require pointer derefence?

c++ c macros undefined-behavior offsetof

Is int a = ++i + ++i undefined behaviour?

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

Why is that for a pointer *p, p[0] is the address stored at p and p[1] is the address of p itself?

c pointers printf undefined-behavior dereference

reinterpret_cast to span of wrappers

c++ undefined-behavior clang++ reinterpret-cast

Can an integer type with no padding bits have a non-value representation?

c gcc language-lawyer undefined-behavior

How do I create and use a stack-allocated struct ending with a C99 flexible array member in C++ without undefined behaviour?

c++ undefined-behavior c++23 flexible-array-member stack-allocation

C output changed by adding a printf

c debugging printf undefined-behavior

Why don't define some undefined behaviours?

c++ undefined-behavior

Is not catching an exception undefined behavior?

c++ exception language-lawyer destructor undefined-behavior

Undefined behavior when constexpr-evaluating negative bitshift?

c++ undefined-behavior bit-shift constexpr

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
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