The following invalid code snippet triggers an ICE on mainline:
========================================
template<typename T...> void foo()
{
T t;
}
========================================
bug.cc:1: error: expected nested-name-specifier before 'T'
bug.cc:1: error: ISO C++ does not include variadic templates
bug.cc: In function 'void foo()':
bug.cc:3: error: expected `;' before 't'
bug.cc:3: error: parameter packs not expanded with `...':
bug.cc:3: internal compiler error: tree check: expected tree that contains
'decl minimal' structure, have 'template_parm_index' in
check_for_bare_parameter_packs, at cp/pt.c:2620
Please submit a full bug report, [etc.]
Looks like this was caused by your patch for variadic templates, Douglas:
2007-03-09 Douglas Gregor <[EMAIL PROTECTED]>
PR c++/20599
* typeck.c (check_return_expr): Check for bare parameter packs.
(comptypes): Compare template parameter packs and
type pack expansions.
...
--
Summary: [4.3 regression] ICE with ellipsis in template parameter
list
Product: gcc
Version: 4.3.0
Status: UNCONFIRMED
Keywords: ice-on-invalid-code, error-recovery, 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=31140
