dllimport3.c

gcc-you can use this code to learn something about gcc, and inquire further into linux,

// { dg-do compile { target i?86-*-cygwin* i?86-*-mingw*} }

// PR 10148  Dllimport attribute of object is overriden by later
// redefinition without attribute.
 
struct Foo
 {
     int a;
 };

 __attribute__((dllimport)) struct Foo f;

 void Bar(void)
 {
     void* dummy = &f;
 }

 struct Foo f;	// { dg-warning "defined" }

// Dllimport sets DECL_NON_ADDR_CONST_P to 1, so following
// assignment would require static_initialization_and_destruction
// if attribute is retained. 

 void* dummy = &f;