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re PR c++/8099 (Friend classes and template specializations)

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PR c++/8099
	* friend.c (make_friend_class): Allow partial specialization
	when declaration is not a template friend.

	* g++.dg/template/friend9.C: New test.

From-SVN: r60308
This commit is contained in:
Kriang Lerdsuwanakij 2002-12-19 15:11:29 +00:00 committed by Kriang Lerdsuwanakij
parent cab7a9a3b9
commit da9701a61c
4 changed files with 44 additions and 14 deletions
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6
gcc/cp/ChangeLog
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@ -1,3 +1,9 @@
2002-12-18 Kriang Lerdsuwanakij <lerdsuwa@users.sourceforge.net>
PR c++/8099
* friend.c (make_friend_class): Allow partial specialization
when declaration is not a template friend.
2002-12-18 Kriang Lerdsuwanakij <lerdsuwa@users.sourceforge.net>
PR c++/3663

11
gcc/cp/friend.c
View File

@ -205,12 +205,16 @@ make_friend_class (type, friend_type)
return;
}
if (processing_template_decl > template_class_depth (type))
/* If the TYPE is a template then it makes sense for it to be
friends with itself; this means that each instantiation is
friends with all other instantiations. */
{
if (CLASS_TYPE_P (friend_type)
&& CLASSTYPE_TEMPLATE_SPECIALIZATION (friend_type)
&& uses_template_parms (friend_type))
{
/* [temp.friend]
Friend declarations shall not declare partial
specializations. */
error ("partial specialization `%T' declared `friend'",
@ -218,11 +222,8 @@ make_friend_class (type, friend_type)
return;
}
if (processing_template_decl > template_class_depth (type))
/* If the TYPE is a template then it makes sense for it to be
friends with itself; this means that each instantiation is
friends with all other instantiations. */
is_template_friend = 1;
}
else if (same_type_p (type, friend_type))
{
pedwarn ("class `%T' is implicitly friends with itself",

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2002-12-18 Kriang Lerdsuwanakij <lerdsuwa@users.sourceforge.net>
PR c++/8099
* g++.dg/template/friend9.C: New test.
2002-11-18 Kriang Lerdsuwanakij <lerdsuwa@users.sourceforge.net>
PR c++/3663

18
gcc/testsuite/g++.dg/template/friend9.C Normal file
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@ -0,0 +1,18 @@
// { dg-do compile }
// Origin: Wolfgang Bangerth <bangerth@ticam.utexas.edu>
// PR c++/8099
// Partial specialization as friend class
template <int N, typename T> struct X;
template <typename T> struct X<1,T>;
template <typename P> class Y {
static int i;
template <int N, typename T> friend struct X;
friend struct X<1,P>;
};
template <typename T> struct X<1,T> {
X () { Y<T>::i; }; // access private field
};