[Bug c++/82360] [8 Regression] tree check fail in get_inner_reference, at expr.c:6996

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82360

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-on-valid-code
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2017-10-02
      Known to work|                            |7.2.1
   Target Milestone|---                         |8.0
            Summary|tree check fail in          |[8 Regression]  tree check
                   |get_inner_reference, at     |fail in
                   |expr.c:6996                 |get_inner_reference, at
                   |                            |expr.c:6996
     Ever confirmed|0                           |1

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.

> ./cc1plus  -quiet t.ii
t.ii: In constructor ‘b< <template-parameter-1-1> >::b(b<
<template-parameter-1-1> >&&)’:
t.ii:3:37: internal compiler error: tree check: expected tree that contains
‘decl common’ structure, have ‘identifier_node’ in get_inner_reference, at
expr.c:6996
   b(b &&c) : d(static_cast<a &&>(c.d)) {}
                                     ^
0x155dde4 tree_contains_struct_check_failed(tree_node const*,
tree_node_structure_enum, char const*, int, char const*)
        /tmp/trunk2/gcc/tree.c:9254
0x7ff44f contains_struct_check(tree_node*, tree_node_structure_enum, char
const*, int, char const*)
        /tmp/trunk2/gcc/tree.h:3218
0xd8ff31 get_inner_reference(tree_node*, long*, long*, tree_node**,
machine_mode*, int*, int*, int*)
        /tmp/trunk2/gcc/expr.c:6996
0xdd1d04 fold_unary_loc(unsigned int, tree_code, tree_node*, tree_node*)
        /tmp/trunk2/gcc/fold-const.c:7726
0xde70dd fold_build1_loc(unsigned int, tree_code, tree_node*, tree_node*)
        /tmp/trunk2/gcc/fold-const.c:12226
0xdbce9f fold_convert_loc(unsigned int, tree_node*, tree_node*)
        /tmp/trunk2/gcc/fold-const.c:2257
0x8a3306 cp_fold_convert(tree_node*, tree_node*)
        /tmp/trunk2/gcc/cp/cvt.c:607
0xb0019a build_static_cast_1
        /tmp/trunk2/gcc/cp/typeck.c:6852
0xb012f9 build_static_cast(tree_node*, tree_node*, int)
        /tmp/trunk2/gcc/cp/typeck.c:7079
0x9aec22 cp_parser_postfix_expression
        /tmp/trunk2/gcc/cp/parser.c:6584
0x9b31a3 cp_parser_unary_expression
        /tmp/trunk2/gcc/cp/parser.c:8251
0x9b428a cp_parser_cast_expression
        /tmp/trunk2/gcc/cp/parser.c:9019