> Rust addresses this gap with the same “0b” prefix as found in some non-standard C compiler extensions.

In C++ that’s part of C++/14 standard, well-specified.

> we have u8, u16, u32, u64, etc

It’s indeed nice to have fundamental types like that, but <stdint.h> header is required by the standard since C99, in C++ since C++/11. It provides typedefs like uint32_t and the rest of them, thus the same UX.

> DWARF support

Yeah, but no PDB. Ship a Windows program written in Rust, and when it crashes or hangs on end-user’s PC you’re pretty much screwed. You need WinDBG to analyze these memory dumps written by the OS, and for that you need pdb symbols as opposed to dwarf.