Search Results: UndefinedBehavior

The C++ Standards Committee resolves CWG2325 with P0593R6, introducing implicit object creation to validate common low-level programming patterns. This landmark change eliminates undefined behavior in idioms like malloc-to-struct casting and byte buffer reinterpretation while preserving type-based aliasing optimizations.

C++26 introduces 'erroneous behaviour' to replace undefined behavior for uninitialized variable reads, transforming potential crashes into diagnosable errors. This shift, spearheaded by proposal P2795R5, enforces well-defined but incorrect outcomes while enabling compilers to flag issues, bolstering safety without sacrificing the 'pay-for-what-you-use' ethos. A critical evolution for developers battling memory-related instability in high-performance systems.