this is the problem

C++ can call constructors of global variables before the call to main().

C will not call anything before main(), unless the function call is explicitly added somewhere in the startup file(s). Initialized global variables can only be initialized with _constant_ data. A function call is not constant data!

Some compilers have special methods to specify functions to be called before main() - basically a way to create self-initializing lib files, where the link order of the library files controls the order the libraries gets initialized.

But once again: EXACTLY WHY do you need to call a function before main()? The startup files fixes the stack. They initialize variables. They zero memory. They call required C RTL initialization functions.

C++ can call constructors of global variables before the call to main().

C will not call anything before main(), unless the function call is explicitly added somewhere in the startup file(s). Initialized global variables can only be initialized with _constant_ data. A function call is not constant data!

Some compilers have special methods to specify functions to be called before main() - basically a way to create self-initializing lib files, where the link order of the library files controls the order the libraries gets initialized.

But once again: EXACTLY WHY do you need to call a function before main()? The startup files fixes the stack. They initialize variables. They zero memory. They call required C RTL initialization functions.

void CallB4other ( void )
{
  /* some stuff
}

Avoid the SMS naming convention. It is neither tough, nor practical nor stylish.

Yay,

Thanks for all your responses.

You guys and galls are soooooo clever.