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re PR c++/40092 ([c++0x] expansion pattern fails with error about derived template instead of actual template)

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PR c++/40092
	* tree.c (cp_tree_equal): Add test for TEMPLATE_PARM_PARAMETER_PACK
	equality.

From-SVN: r152751
This commit is contained in:
Larry Evans 2009-10-14 06:27:41 +00:00 committed by Jason Merrill
parent a743523c38
commit 9524f7104a
4 changed files with 33 additions and 0 deletions
gcc
cp
ChangeLogtree.c
testsuite
ChangeLog
g++.dg/cpp0x
vt-40092.C

6
gcc/cp/ChangeLog

@ -1,3 +1,9 @@
2009-10-14 Larry Evans <cppljevans@suddenlink.net>
PR c++/40092
* tree.c (cp_tree_equal): Add test for TEMPLATE_PARM_PARAMETER_PACK
equality.
2009-10-12 Jason Merrill <jason@redhat.com>
PR c++/37875

2
gcc/cp/tree.c

@ -2081,6 +2081,8 @@ cp_tree_equal (tree t1, tree t2)
case TEMPLATE_PARM_INDEX:
return (TEMPLATE_PARM_IDX (t1) == TEMPLATE_PARM_IDX (t2)
&& TEMPLATE_PARM_LEVEL (t1) == TEMPLATE_PARM_LEVEL (t2)
&& (TEMPLATE_PARM_PARAMETER_PACK (t1)
== TEMPLATE_PARM_PARAMETER_PACK (t2))
&& same_type_p (TREE_TYPE (TEMPLATE_PARM_DECL (t1)),
TREE_TYPE (TEMPLATE_PARM_DECL (t2))));

4
gcc/testsuite/ChangeLog

@ -1,3 +1,7 @@
2009-10-14 Larry Evans <cppljevans@suddenlink.net>
* g++.dg/cpp0x/vt-40092.C: New.
2009-10-14 Alexandre Oliva <aoliva@redhat.com>
* gcc.dg/guality/pr41616-1.c: Drop -O2.

21
gcc/testsuite/g++.dg/cpp0x/vt-40092.C Normal file

@ -0,0 +1,21 @@
// { dg-do "compile" }
// { dg-options "-std=c++0x" }
template <typename... Types> struct package {};
template <int ArgGen> struct wrapper_gen {};
template <int ArgNest> struct wrapper_nest
{
typedef wrapper_gen<ArgNest> type_nest;
};
template <int... ArgPack>
struct wrapper_pack
{
typedef package<wrapper_gen <ArgPack>...> type_pack;
// incorrect error: expansion pattern 'wrapper_gen<ArgNest>'
// contains no argument packs
};