re PR c++/81957 (ICE decltype)

re PR c++/81957 (ICE decltype)

/cp
2017-11-02  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/81957
	* pt.c (make_pack_expansion): Add tsubst_flags_t parameter.
	(expand_integer_pack, convert_template_argument, coerce_template_parms,
	gen_elem_of_pack_expansion_instantiation, tsubst_pack_expansion,
	unify): Adjust calls.
	* tree.c (cp_build_qualified_type_real): Likewise.
	* cp-tree.h (make_pack_expansion): Adjust declaration.

/testsuite
2017-11-02  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/81957
	* g++.dg/cpp0x/variadic-crash5.C: New.

From-SVN: r254361