Comment by kibwen

Upvoted for the signed integer overflow example. I'll admit that I actually don't know the most idiomatic, bulletproof way of testing for signed overflow in C; if you google "how to test signed integer overflow in C", the very first result is essentially equivalent to the buggy example in the blog post ( https://www.geeksforgeeks.org/check-for-integer-overflow/ ), and I'm not keen to repeat the legendary case of signed overflow within the PHP interpreter: https://web.archive.org/web/20120412194929/http://use.perl.o...