On Sunday, 22 July 2012 at 10:42:58 UTC, Nick Sabalausky wrote:
Actually, that's just a clever illusion. Your main() method
isn't
really the first thing called, the first thing called is a
function in
druntime called dmain (or Dmain or _dmain or something like
that, I
forget offhand). This function does all the initial stuff like
calling
all the static/module constructors, initializing druntime
including the
GC, some other stuff, and then actually calling *your* main().
It's the other way round. Your main() function gets mangled as
_Dmain by the compiler, and druntime has the real (C) main(). On
linking, the undefined reference to _Dmain in druntime is
resolved to the user-supplied D function.
The D main() is also special in that the compiler transparently
rewrites all the »reduced« signatures (without return value and
param array) to the full one.
David
