c++: ICE with alias in pack expansion [PR103769]
commit07be8f8da4c6840a1fd6b2229b147e50cc6f03dc
authorJason Merrill <jason@redhat.com>
Fri, 25 Mar 2022 15:26:06 +0000 (25 11:26 -0400)
committerJason Merrill <jason@redhat.com>
Mon, 28 Mar 2022 13:35:58 +0000 (28 09:35 -0400)
treed457edb5536dfaef5bffa78a4eb98cafe9bc3e91
parent52f42dce15f036a140154aa339fa1709c5cc858b
c++: ICE with alias in pack expansion [PR103769]

This was breaking because when we stripped the 't' typedef in s<t<Args>...>
to be s<Args...>, the TYPE_MAIN_VARIANT of "Args..." was still
"t<Args>...", because type pack expansions are treated as types.  Fixed by
using the right function to copy a "type".

PR c++/99445
PR c++/103769

gcc/cp/ChangeLog:

* tree.cc (strip_typedefs): Use build_distinct_type_copy.

gcc/testsuite/ChangeLog:

* g++.dg/cpp0x/variadic-alias5.C: New test.
gcc/cp/tree.cc
gcc/testsuite/g++.dg/cpp0x/variadic-alias5.C [new file with mode: 0644]