Is there way to declare a extern(C) function inside a function without altering the mangled name?

Should I write a mixin for that based on pragma(mangleof) (used as extern_C_global_scope in example below) ? Or did someone already implement that? 

extern(C) void foo1();

void fun(){

extern(C) void foo2();

mixin(extern_C_global_scope("void foo3()"));

foo1(); //OK

foo2();  //will result in link error due to different mangling of foo2.

foo3();  //OK

}