The following invalid code snippet triggers an ICE on mainline:
==============================================
template<int... N> void foo()
{
sizeof...N();
}
void bar()
{
foo<0>();
}
==============================================
bug1.cc: In function 'void foo()':
bug1.cc:3: error: 'N' cannot be used as a function
bug1.cc: In function 'void foo() [with int N = #'argument_pack_select' not
supported by dump_expr#<expression error>]':
bug1.cc:8: instantiated from here
bug1.cc:3: error: '0' cannot be used as a function
bug1.cc:3: internal compiler error: tree check: expected tree_vec, have
error_mark in tsubst_copy_and_build, at cp/pt.c:10528
Please submit a full bug report, [etc.]
The broken diagnostic "'argument_pack_select' not supported by dump_expr"
is already tracked in PR33118.
--
Summary: [4.3 regression] ICE with sizeof for invalid argument
pack
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=33496
