The unpredictable outcome of compiling or executing a program which breaks rules of the language neither compiler, interpreter nor runtime-system have to enforce.
I remarked two things: std::numeric_limits<float>::max()+(a small number) gives: std::numeric_limits<float&…
c++ c floating-point undefined-behavior numeric-limitsConsider this topic a sequel of the following topic: Previous installment Undefined behavior and sequence points Let's revisit this funny …
c++ undefined-behavior c++-faq sequence-pointsConsider this code: int i = 1; int x = ++i + ++i; We have some guesses for what a compiler might do for …
c++ undefined-behaviorThis is an example to illustrate my question which involves some much more complicated code that I can't post here. #…
c++ c undefined-behavior integer-overflowWhat I am asking about is the well known "last member of a struct has variable length" trick. It goes …
c undefined-behavior c89I was reading about union in C from K&R, as far as I understood, a single variable in …
c undefined undefined-behavior unionsGCC 6 has a new optimizer feature: It assumes that this is always not null and optimizes based on that. Value …
c++ gcc compiler-optimization undefined-behaviorclang 3.9 has added to -Wall a the warning -Wexpansion-to-defined, which produces macro expansion producing 'defined' has undefined behaviour in case …
c++ c clang undefined-behavior definedToday I have read an article about GCC Undefined Behavior Sanitizer (ubsan). However, when I follow steps there (add -fsanitize=…
c++ gcc undefined-behavior undefined-reference ubsanI have compiled my application with -fsanitize=undefined option. How can I now test my application for undefined behavior? Also, …
c++ gcc undefined-behavior address-sanitizer ubsan