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New posts in undefined-behavior

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

Is a misaligned load due to a cast undefined behavior?

c casting undefined-behavior memory-alignment

Is there a way, in tests, to defend against "correct" results coming out of undefined behavior?

c++ unit-testing googletest undefined-behavior

Why in Ruby, a || 1 will throw an error when `a` is undefined, but a = a || 1 will not?

ruby exception undefined undefined-behavior

Does this const initialization through const_cast have undefined behaviour?

c++ initialization undefined undefined-behavior const-cast

Is full followed by partial initialization of a subobject undefined behavior?

c initialization undefined-behavior

How to suppress some unsigned-integer-overflow errors from UBsan?

c++ undefined-behavior ubsan
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