On: C99/C11 dynamic array that mimics C++'s std::vector

[mtdewcmu]

A lot of people seem to use stdio even in C++.

Having comprehensible error messages is related to being a simple language, IMO. C++ compile-time errors are notorious for being unreadable. I'm not familiar with the output of what(), but I'd wager that the problem is a consequence of all the abstraction.