[Bug c++/82293] New: [8 Regression] ICE in nonlambda_method_basetype at gcc/cp/lambda.c:886

["marxin at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82293

            Bug ID: 82293
           Summary: [8 Regression] ICE in nonlambda_method_basetype at
                    gcc/cp/lambda.c:886
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: marxin at gcc dot gnu.org
  Target Milestone: ---

Following ICEs starting from r251433:

$ g++
/home/marxin/Programming/gcc/gcc/testsuite/g++.dg/cpp0x/lambda/lambda-ice20.C  
-std=c++14 -Wshadow
/home/marxin/Programming/gcc/gcc/testsuite/g++.dg/cpp0x/lambda/lambda-ice20.C:6:29:
internal compiler error: Segmentation fault
   int f{[this](){return 42;}()};
         ~~~~~~~~~~~~~~~~~~~~^~
0xd9905f crash_signal
        ../../gcc/toplev.c:341
0x6f7a8f nonlambda_method_basetype()
        ../../gcc/cp/lambda.c:886
0x73010f check_local_shadow
        ../../gcc/cp/name-lookup.c:2744
0x73010f do_pushdecl
        ../../gcc/cp/name-lookup.c:3048
0x73010f pushdecl(tree_node*, bool)
        ../../gcc/cp/name-lookup.c:3111
0x7320e7 do_pushdecl_with_scope
        ../../gcc/cp/name-lookup.c:3948
0x7327e7 do_pushtag
        ../../gcc/cp/name-lookup.c:6316
0x7327e7 pushtag(tree_node*, tree_node*, tag_scope)
        ../../gcc/cp/name-lookup.c:6385
0x69076f xref_tag_1
        ../../gcc/cp/decl.c:13615
0x69076f xref_tag(tag_types, tree_node*, tag_scope, bool)
        ../../gcc/cp/decl.c:13671
0x6f4441 begin_lambda_type(tree_node*)
        ../../gcc/cp/lambda.c:141
0x799acf tsubst_lambda_expr(tree_node*, tree_node*, int, tree_node*)
        ../../gcc/cp/pt.c:16862
0x79a943 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
        ../../gcc/cp/pt.c:18209
0x79ac70 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
        ../../gcc/cp/pt.c:17522
0x79c1e0 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
        ../../gcc/cp/pt.c:18058
0x6f1047 get_nsdmi(tree_node*, bool, int)
        ../../gcc/cp/init.c:581
0x860b53 process_init_constructor_record
        ../../gcc/cp/typeck2.c:1430
0x860b53 process_init_constructor
        ../../gcc/cp/typeck2.c:1626
0x860b53 digest_init_r
        ../../gcc/cp/typeck2.c:1135
0x800f80 finish_compound_literal(tree_node*, tree_node*, int, fcl_t)
        ../../gcc/cp/semantics.c:2750