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re PR c++/42277 (decltype error in template)

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PR c++/42277
	* semantics.c (finish_decltype_type): Don't assume that op1 of a
	COMPONENT_REF is always the field.
	* g++.dg/cpp0x/decltype20.C: New.

From-SVN: r155002
This commit is contained in:
Jason Merrill 2009-12-04 17:51:12 -05:00 • committed by Jason Merrill
parent 2f2d73866b
commit 21920fd14c
4 changed files with 28 additions and 1 deletions
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6
gcc/cp/ChangeLog
View file

@ -1,3 +1,9 @@
2009-12-04 Jason Merrill <jason@redhat.com>
PR c++/42277
* semantics.c (finish_decltype_type): Defer handling of decltype
of a non-dependent COMPONENT_REF in a template.
2009-12-04 Dodji Seketeli <dodji@redhat.com>
PR c++/42218

8
gcc/cp/semantics.c
View file

@ -4777,7 +4777,13 @@ finish_decltype_type (tree expr, bool id_expression_or_member_access_p)
return error_mark_node;
}
if (type_dependent_expression_p (expr))
if (type_dependent_expression_p (expr)
/* In a template, a COMPONENT_REF has an IDENTIFIER_NODE for op1 even
if it isn't dependent, so that we can check access control at
instantiation time, so defer the decltype as well (PR 42277). */
|| (id_expression_or_member_access_p
&& processing_template_decl
&& TREE_CODE (expr) == COMPONENT_REF))
{
if (id_expression_or_member_access_p)
{

5
gcc/testsuite/ChangeLog
View file

@ -1,3 +1,8 @@
2009-12-04 Jason Merrill <jason@redhat.com>
PR c++/42277
* g++.dg/cpp0x/decltype20.C: New.
2009-12-04 David Daney <ddaney@caviumnetworks.com>
PR rtl-optimization/42164

10
gcc/testsuite/g++.dg/cpp0x/decltype20.C Normal file
View file

@ -0,0 +1,10 @@
// PR c++/42277
// { dg-options -std=c++0x }
struct S { int s; };
template <int N>
void foo ()
{
S s;
decltype (s.s) i;
}