[Dev-C++] How portable/standards compliant is Dev C++?

[<RPG...@ao...>]

Since the compiler behind Dev C++ is mingw, which is itself a port of GCC, code that compiles fine in Dev C++ should also compile with GCC correct?  This is, of course, assuming that no calls are made to non-portable libraries.

I've also heard rumors that GCC is the closest to compliance with the most recent ANSI C++ standards.  How true is that?