bool
i386_pe_type_dllimport_p (tree decl)
{
gcc_assert (TREE_CODE (decl) == VAR_DECL
|| TREE_CODE (decl) == FUNCTION_DECL);
if (TARGET_NOP_FUN_DLLIMPORT && TREE_CODE (decl) == FUNCTION_DECL)
return false;
/* We ignore the dllimport attribute for inline member functions.
This differs from MSVC behavior which treats it like GNUC
'extern inline' extension. Also ignore for template
instantiations with linkonce semantics and artificial methods. */
if (TREE_CODE (decl) == FUNCTION_DECL
&& (DECL_DECLARED_INLINE_P (decl)
|| DECL_TEMPLATE_INSTANTIATION (decl)
|| DECL_ARTIFICIAL (decl)))
return false;
/* Overrides of the class dllimport decls by out-of-class definitions are
handled by tree.c:merge_dllimport_decl_attributes. */
return true;
}
bool
i386_pe_type_dllimport_p (tree decl)
{
gcc_assert (TREE_CODE (decl) == VAR_DECL
|| TREE_CODE (decl) == FUNCTION_DECL);
if (TARGET_NOP_FUN_DLLIMPORT && TREE_CODE (decl) == FUNCTION_DECL)
return false;
/* We ignore the dllimport attribute for inline member functions.
This differs from MSVC behavior which treats it like GNUC
'extern inline' extension. Also ignore for template
instantiations with linkonce semantics and artificial methods. */
if (TREE_CODE (decl) == FUNCTION_DECL
&& (DECL_DECLARED_INLINE_P (decl)
|| DECL_TEMPLATE_INSTANTIATION (decl)
|| DECL_ARTIFICIAL (decl)))
return false;
/* Since we can't treat a pointer to a dllimport'd symbol as a
constant address, we turn off the attribute on C++ virtual
methods to allow creation of vtables using thunks. */
else if (TREE_CODE (TREE_TYPE (decl)) == METHOD_TYPE
&& DECL_VIRTUAL_P (decl))
{
/* Even though we ignore the attribute from the start, warn if we later see
an out-of class definition, as we do for other member functions in
tree.c:merge_dllimport_decl_attributes. If this is the key method, the
definition may affect the import-export status of vtables, depending
on how we handle MULTIPLE_SYMBOL_SPACES in cp/decl2.c. */
if (DECL_INITIAL (decl))
{
warning (OPT_Wattributes, "%q+D redeclared without dllimport attribute: "
"previous dllimport ignored", decl);
#ifdef PE_DLL_DEBUG
if (decl == CLASSTYPE_KEY_METHOD (DECL_CONTEXT (decl)))
warning (OPT_Wattributes, "key method %q+D of dllimport'd class defined"
decl);
#endif
}
return false;
}
/* Don't mark defined functions as dllimport. This code will only be
reached if we see a non-inline function defined out-of-class. */
else if (TREE_CODE (decl) == FUNCTION_DECL
&& (DECL_INITIAL (decl)))
return false;
/* Don't allow definitions of static data members in dllimport class,
If vtable data is marked as DECL_EXTERNAL, import it; otherwise just
ignore the class attribute. */
else if (TREE_CODE (decl) == VAR_DECL
&& TREE_STATIC (decl) && TREE_PUBLIC (decl)
&& !DECL_EXTERNAL (decl))
{
if (!DECL_VIRTUAL_P (decl))
error ("definition of static data member %q+D of "
"dllimport'd class", decl);
return false;
}
return true;
}