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New posts in undefined-behavior
Is it OK to pass the address of an int for scanf("%x", ...)?
Dec 08, 2025
c
scanf
language-lawyer
undefined-behavior
Is bitwise aritmetic on pointers defined behavior?
Dec 07, 2025
c
pointers
undefined-behavior
null-pointer
Array-pointer arithmetic - legal and undefined behaviour [closed]
Dec 08, 2025
c++
c
arrays
pointers
undefined-behavior
"Cannot read property of '<propName>' of undefined" even though it's defined
Dec 06, 2025
javascript
node.js
undefined-behavior
Defining "reduce" on a list in scheme
Dec 06, 2025
recursion
scheme
undefined-behavior
fold
operation
Is sum+++i undefined behavior in C? [duplicate]
Dec 07, 2025
c
language-lawyer
undefined-behavior
Is it UB to skip the destructor of a derived class before doing a placement new on a base class?
Dec 07, 2025
c++
undefined-behavior
lifetime
[] precedence over * operator
Dec 06, 2025
c
undefined-behavior
Implementation of std::start_lifetime_as()
Dec 06, 2025
c++
undefined-behavior
lifetime
strict-aliasing
c++23
AppBarLayout strange behavior when changing visibility of some views in it
Dec 04, 2025
android
undefined-behavior
android-coordinatorlayout
android-appbarlayout
C language alphanumeric check for bad chars
Dec 03, 2025
c
char
clang
undefined-behavior
Is foo(i++) + foo(i++) undefined in ANSI C?
Dec 01, 2025
c
undefined-behavior
sequence-points
"Materializing" an object of a known type for C++ type inference
Nov 27, 2025
c++
c++11
undefined-behavior
type-inference
Is Insertion into a vector while also accessing a vector undefined behavior?
Nov 25, 2025
c++
std
undefined-behavior
Signed int overflow-underflow cause undefined behaviour but how does the compiler anticipate this?
Nov 23, 2025
c++
undefined-behavior
integer-overflow
Why is the behaviour of this code undefined in C?
Nov 23, 2025
c
undefined-behavior
Unexpected results when using printf
Nov 23, 2025
c
type-conversion
printf
undefined-behavior
Are multidimensional array accesses sequenced?
Nov 21, 2025
arrays
c
multidimensional-array
undefined-behavior
order-of-execution
Reference list element then popping it, is it undefined behaviour?
Nov 21, 2025
c++
language-lawyer
undefined-behavior
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