Those kinds of tools aren't new or emerging. The "indent" utility for C has been around for decades. I first remember using it on 4.3BSD, but it may have been around before that.
indent - indent and format C program source
HISTORY
The indent command appeared in 4.2BSD.
NAME
cb - C program beautifier
SYNOPSIS
cb
DESCRIPTION
Cb places a copy of the C program from the standard input on the stan-
dard output with spacing and indentation that displays the structure of
the program.This is the type of error that any static analysis tool would easily pick.
You want the compilers knowledge of the code for this, e.g. while formating C++ template mess.
There's a tight integration into the actual toolchains, which is a good thing.