The following valid code snippet triggers an ICE on the trunk:
==============================
struct A
{
typedef int X;
};
template<int> union B
{
A::X x;
};
==============================
bug.cc:8:6: internal compiler error: in
append_type_to_template_for_access_check_1, at cp/pt.c:17353
Please submit a full bug report, [etc.]
The regression appeared between 2009-05-22 and 2009-06-01.
Looks like it was caused by the following patch:
2009-05-26 Dodji Seketeli <do...@redhat.com>
PR c++/40007
* cp-tree.h (MEMBER_TYPES_NEEDING_ACCESS_CHECK): Remove this accessor.
(TI_TYPEDEFS_NEEDING_ACCESS_CHECKING): New accessor.
(get_types_needing_access_check): Declare new entry point.
* pt.c (append_type_to_template_for_access_check_1,
get_types_needing_access_check): New functions.
[...]
--
Summary: [4.5 Regression] ICE with template union
Product: gcc
Version: 4.5.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code, monitored
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: reichelt at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40557
