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New posts in undefined-behavior

Is it safe to call the functions from <cctype> with char arguments?

c++ c character undefined-behavior language-lawyer

Does C standard mandate that platforms must not define behaviors beyond those given in standard

c language-lawyer undefined-behavior

Changing the interface without recompiling the implementing class

java exception undefined-behavior throws

unique_ptr: linked list entry deletion

c++ linked-list undefined-behavior unique-ptr

Is initializing a pointer declarator with an invalid pointer undefined behavior?

c++ language-lawyer undefined-behavior invalid-pointer

Google Sparsehash uses realloc() on type which is not trivially copyable

c++ undefined-behavior realloc gcc8 sparsehash

If Derived adds no new members to Base (and is POD), then what kind of pointer casts, and dereferencing, can be safely done?

c++ language-lawyer undefined-behavior

How to reinterpret a sequence of bytes as a POD structure without causing UB?

c++ struct undefined-behavior strict-aliasing

Does i++ invoke undefined behavior for signed types smaller than int in case of overflow?

c++ c language-lawyer undefined-behavior

Strict aliasing and references to compile-time C arrays

c++ language-lawyer undefined-behavior strict-aliasing

initialization order of thread_local vs. global variables

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

Consistency and behavior of %n operator in *scanf

c scanf undefined-behavior glibc

Member function pointer of forward declared class

c++ visual-c++ undefined-behavior

Does `printf("%.-1s\n", "foo")` invoke undefined behaviour?

c printf language-lawyer standards undefined-behavior

C++ UBSAN produces false positives with derived objects

c++ undefined-behavior ubsan

C - function returning a pointer to a local variable

c undefined-behavior

Undefined Behaviour in C99 related to adjusted parameters

c language-lawyer undefined-behavior implicit-conversion c99

Undefined behaviour on std::prev for transform-view

c++ c++20 undefined-behavior std-ranges

Is the "laundry" propagated by pointer arithmetic?

c++ undefined-behavior c++17

Sequence points and side effects in C

c undefined-behavior sequence-points
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