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authorJason Merrill <jason@redhat.com>2008-01-23 00:11:58 -0500
committerJason Merrill <jason@gcc.gnu.org>2008-01-23 00:11:58 -0500
commitb2a7def5aba4da7615a1ea9ea79e869da76f13c6 (patch)
tree1dfbc47f25968e7460e50b79ca7cbd5dcdc52fea
parent62b445b31ccbd4c9a5d3e32c2863eb02c1ff3e2f (diff)
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re PR c++/28560 (Trouble with __attribute__ in template parameter)
PR c++/28560 * decl.c (groktypename): Also ignore attributes on dependent possibly-class types. From-SVN: r131755
-rw-r--r--gcc/cp/ChangeLog4
-rw-r--r--gcc/cp/decl.c8
-rw-r--r--gcc/testsuite/g++.dg/ext/tmplattr8.C8
3 files changed, 18 insertions, 2 deletions
diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index f9971d4..667f813 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -9,6 +9,10 @@
2008-01-22 Jason Merrill <jason@redhat.com>
+ PR c++/28560
+ * decl.c (groktypename): Also ignore attributes on dependent
+ possibly-class types.
+
PR c++/34912
* friend.c (do_friend): Check for prior declaration of a friend
function of a local class.
diff --git a/gcc/cp/decl.c b/gcc/cp/decl.c
index 338e1ed..4640adf 100644
--- a/gcc/cp/decl.c
+++ b/gcc/cp/decl.c
@@ -3908,8 +3908,12 @@ groktypename (cp_decl_specifier_seq *type_specifiers,
if (attrs)
{
if (CLASS_TYPE_P (type))
- warning (OPT_Wattributes, "ignoring attributes applied to class type "
- "outside of definition");
+ warning (OPT_Wattributes, "ignoring attributes applied to class type %qT "
+ "outside of definition", type);
+ else if (IS_AGGR_TYPE (type))
+ /* A template type parameter or other dependent type. */
+ warning (OPT_Wattributes, "ignoring attributes applied to dependent "
+ "type %qT without an associated declaration", type);
else
cplus_decl_attributes (&type, attrs, 0);
}
diff --git a/gcc/testsuite/g++.dg/ext/tmplattr8.C b/gcc/testsuite/g++.dg/ext/tmplattr8.C
new file mode 100644
index 0000000..4b8707a
--- /dev/null
+++ b/gcc/testsuite/g++.dg/ext/tmplattr8.C
@@ -0,0 +1,8 @@
+// PR c++/28560
+
+template<typename> struct A {};
+
+template<int> struct B;
+
+template<int N> struct C :
+ A<typename B<N>::X __attribute__((unused))> {}; // { dg-warning "attribute" }