The following invalid code snippet triggers an ICE on mainline:
================================================================
template<typename> struct A {};
template<template<typename> class... T> void foo(T<int>) {}
template void foo<A>(A<int>);
================================================================
bug.cc:3: error: parameter packs not expanded with `...':
bug.cc:3: note: 'template<class> class T'
bug.cc:5: internal compiler error: tree check: expected template_type_parm or
template_template_parm or bound_template_template_parm, have error_mark in
fn_type_unification, at cp/pt.c:11623
Please submit a full bug report, [etc.]
The ICE appeared between 2007-10-13 and 2007-11-13.
Maybe related to PR 34754.
--
Summary: [4.3 regression] ICE with invalid argument in variadic
template function
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=34755
