undefined-behavior

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Is casting strings from `wchar_t` to `char16_t` legal if encoding and width is the same?
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5
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203
c++17 strict-aliasing undefined-behavior language-lawyer c++
OpenGL ES: Well defined way to discard primitive in vertex shader
user_12829310
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1
1
117
vertex-shader undefined-behavior opengl-es nan shader
Why does tree traversal result in undefined behaviour when not using pointer to keep track of current node?
user_32700370
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2
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86
undefined-behavior tree-traversal c++
Segmentation error when swapping 2D array elements with pointers
user_180741040
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1
1
42
dereference undefined-behavior swap initialization c
Does reassignment of pointers acquired by reinterpret_cast from raw memory cause UB?
user_111437630
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3
1
261
undefined-behavior language-lawyer reinterpret-cast pointers c++
Should a boolean predicate for std::condition_variable be volatile in C++?
user_77534440
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3
4
285
undefined-behavior c++-standard-library c++11 multithreading c++
std::unique_ptr, pimpl and object lifetime
user_110743990
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2
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97
c++17 undefined-behavior c++
Wrong result of multiplication: Undefined behavior or compiler bug?
user_180101500
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8
1
318
compiler-bug visual-studio-2019 undefined-behavior visual-studio c++
Is (int)(unsigned)-1 == -1 undefined behavior
user_120025700
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3
2
206
undefined-behavior integer-overflow signed c++11 c++
Is __builtin_ctzll(0) "undefined behavior" or just "undefined"?
user_10204060
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2
0
182
compiler-bug undefined-behavior clang x86 gcc
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