Jakub Jelinek <jakub at gcc dot> changed:

           What    |Removed                     |Added
           Priority|P3                          |P2
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2018-03-13
                 CC|                            |jakub at gcc dot,
                   |                            |jason at gcc dot
   Target Milestone|---                         |6.5
            Summary|ICE (Segmentation fault)    |[6/7/8 Regression] ICE
                   |when `decltype` is used     |(Segmentation fault) when
                   |with parameter pack         |`decltype` is used with
                   |                            |parameter pack
     Ever confirmed|0                           |1

--- Comment #1 from Jakub Jelinek <jakub at gcc dot> ---
This got rejected still in r182662
pr84839.C: In instantiation of ‘struct S<int>’:
pr84839.C:6:17:   required from here
pr84839.C:3:51: error: expansion pattern ‘int’ contains no argument packs
and segfaults already in r182686, don't have the revisions in between, but most
likely either r182668 or r182667.
The segfault is infinite recursion of tsubst_pack_expansion -> tsubst_decl ->
tsubst -> tsubst_decl, wonder why the instantiation depth limits don't catch

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