Topic analysis

Everything in C is undefined behavior

A 30-year C/C++ veteran argues that all nontrivial C/C++ code contains undefined behavior (UB), citing subtle examples like unaligned pointers, improper isxdigit() usage, float-to-int conversions, and null pointer initialization issues. He notes even mature projects like OpenBSD have UB, proposes using large language models (LLMs) to detect and fix UB at scale, and asserts that writing C/C++ without LLM supervision in 2026 is irresponsible and potentially a Sarbanes-Oxley (SOX) violation.