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re PR c++/55003 ([C++11] Member function pointer not working as constexpr initializer)

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PR c++/55003
	* decl.c (cp_finish_decl): Force instantiation of an
	auto static data member.

From-SVN: r196069
This commit is contained in:
Jason Merrill 2013-02-14 20:27:36 -05:00 committed by Jason Merrill
parent d132b74aba
commit b24cd3d1f8
3 changed files with 27 additions and 0 deletions
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4
gcc/cp/ChangeLog
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@ -1,5 +1,9 @@
2013-02-14 Jason Merrill <jason@redhat.com>
PR c++/55003
* decl.c (cp_finish_decl): Force instantiation of an
auto static data member.
PR c++/55220
* pt.c (unify): A pack expansion that is not the last template
argument makes the entire template argument list non-deduced.

9
gcc/cp/decl.c
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@ -6111,6 +6111,15 @@ cp_finish_decl (tree decl, tree init, bool init_const_expr_p,
tree d_init;
if (init == NULL_TREE)
{
if (DECL_TEMPLATE_INSTANTIATION (decl)
&& !DECL_TEMPLATE_INSTANTIATED (decl))
{
/* init is null because we're deferring instantiating the
initializer until we need it. Well, we need it now. */
instantiate_decl (decl, /*defer_ok*/true, /*expl*/false);
return;
}
error ("declaration of %q#D has no initializer", decl);
TREE_TYPE (decl) = error_mark_node;
return;

14
gcc/testsuite/g++.dg/cpp0x/auto37.C Normal file
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@ -0,0 +1,14 @@
// PR c++/55003
// { dg-do compile { target c++11 } }
template<typename T>
struct A {
static const auto t
= (typename T::type)42;
};
struct X {
typedef int type;
};
A<X> a;