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re PR c++/10552 (Small sample using nested templates causes internal compiler error.)

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PR c++/10552
	* pt.c (tsubst_copy): Handle TEMPLATE_DECL that is a member class
	template and has dependent context.

	* g++.dg/template/ttp6.C: New test.

From-SVN: r66682
This commit is contained in:
Kriang Lerdsuwanakij 2003-05-11 09:45:30 +00:00 committed by Kriang Lerdsuwanakij
parent cdc958d823
commit fcea74011f
4 changed files with 54 additions and 0 deletions
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6
gcc/cp/ChangeLog
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@ -1,3 +1,9 @@
2003-05-11 Kriang Lerdsuwanakij <lerdsuwa@users.sourceforge.net>
PR c++/10552
* pt.c (tsubst_copy): Handle TEMPLATE_DECL that is a member class
template and has dependent context.
2003-05-10 Kriang Lerdsuwanakij <lerdsuwa@users.sourceforge.net>
* pt.c (instantiate_decl): Call push/pop_deferring_access_checks.

22
gcc/cp/pt.c
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@ -7294,7 +7294,29 @@ tsubst_copy (t, args, complain, in_decl)
args, complain, in_decl);
else if (is_member_template (t))
return tsubst (t, args, complain, in_decl);
else if (DECL_CLASS_SCOPE_P (t)
&& uses_template_parms (DECL_CONTEXT (t)))
{
/* Template template argument like the following example need
special treatment:
template <template <class> class TT> struct C {};
template <class T> struct D {
template <class U> struct E {};
C<E> c; // #1
};
D<int> d; // #2
We are processing the template argument `E' in #1 for
the template instantiation #2. Originally, `E' is a
TEMPLATE_DECL with `D<T>' as its DECL_CONTEXT. Now we
have to substitute this with one having context `D<int>'. */
tree context = tsubst (DECL_CONTEXT (t), args, complain, in_decl);
return lookup_field (context, DECL_NAME(t), 0, false);
}
else
/* Ordinary template template argument. */
return t;
case LOOKUP_EXPR:

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2003-05-11 Kriang Lerdsuwanakij <lerdsuwa@users.sourceforge.net>
PR c++/10552
* g++.dg/template/ttp6.C: New test.
2003-05-11 Richard Sandiford <rsandifo@redhat.com>
* gcc.c-torture/execute/builtins: New directory.

21
gcc/testsuite/g++.dg/template/ttp6.C Normal file
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@ -0,0 +1,21 @@
// { dg-do compile }
// Origin: Eelis van der Weegen <gccbugs@contacts.eelis.net>
// PR c++/10552: Member class template as template template argument
// substitution issue.
template <template <typename> class A, typename>
struct B
{
typedef typename A<int>::t t;
};
template <typename D>
struct E
{
template <typename> struct F { typedef int t; };
typedef typename B<F, D>::t t;
};
typedef E<int>::t t;