Currently looking at this guide to using OpenMP with C/C++ programs and wonder what they mean by creating a magic function in the quote below:
Internally, GCC implements this by creating a magic function and moving the associated code into that function, so that all the variables declared within that block become local variables of that function (and thus, locals to each thread). ICC, on the other hand, uses a mechanism resembling fork(), and does not create a magic function. Both implementations are, of course, valid, and semantically identical.
A "magic" function is a function created by the compiler - its magicness comes from the fact that you as a programmer don't need to do anything, it's "magically done for you".