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New posts in undefined-behavior
What is the definition of bitwise operators in C++?
Mar 24, 2026
c++
undefined-behavior
language-lawyer
Is it ok to treat multidimensional std::array as continuous block of data?
Mar 22, 2026
c++
undefined-behavior
stdarray
Unexpected printf output [duplicate]
Mar 22, 2026
c
output
printf
c-strings
undefined-behavior
Is shifting 0 to the left considered undefined behavior in C?
Mar 19, 2026
c
language-lawyer
standards
undefined-behavior
Can ForwardIterator and OutputIterator in C++ standard algorithms be the same?
Mar 18, 2026
c++
stl
undefined-behavior
std::map erase - pass iterator to wrong map
Mar 17, 2026
c++
language-lawyer
undefined-behavior
stdmap
OpenGL ES: Well defined way to discard primitive in vertex shader
Mar 16, 2026
opengl-es
glsl
nan
undefined-behavior
vertex-shader
Expression evaluation in C
Mar 13, 2026
c
undefined-behavior
expression-evaluation
Does reassignment of pointers acquired by reinterpret_cast from raw memory cause UB?
Mar 12, 2026
c++
pointers
language-lawyer
undefined-behavior
reinterpret-cast
Tracking All Instances While Preserving Const Correctness
Mar 12, 2026
c++
undefined-behavior
const-correctness
Expression in C++ [duplicate]
Mar 11, 2026
c++
undefined-behavior
c++-faq
sequence-points
Passing an instance of object as function argument -- Does this code invoke undefined behavior?
Mar 09, 2026
c++
pass-by-reference
undefined-behavior
Why is using an identifier not in scope UB and not an error
Mar 03, 2026
c
language-lawyer
undefined-behavior
c89
Additional output from program built with the UB sanitizer of Clang
Mar 01, 2026
c++
clang
undefined-behavior
sanitizer
Why is Signed Overflow due to computation still Undefined Behavior in C++20
Feb 26, 2026
c++
c++20
undefined-behavior
integer-overflow
signed
Does C++23 guarantee std::launder can be omitted in placement new scenarios?
Feb 27, 2026
c++
compiler-optimization
undefined-behavior
c++23
stdlaunder
"Undefined behaviour" always undefined?
Feb 26, 2026
c
undefined-behavior
Does const char* alias with char*?
Feb 26, 2026
c
language-lawyer
undefined-behavior
Is it undefined behavior to do runtime borrow management with the help of raw pointers in Rust?
Feb 25, 2026
rust
language-lawyer
undefined-behavior
ffi
borrowing
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