[Bug c++/84192] New: [7/8 Regression] ICE with statement expression

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84192

            Bug ID: 84192
           Summary: [7/8 Regression] ICE with statement expression
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Keywords: ice-on-invalid-code
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: reichelt at gcc dot gnu.org
  Target Milestone: ---

The following invalid code snippet triggers an ICE since GCC 7.1.0:

========================================
bool foo()
{ 
  return ({ return true; }) && false;
}
========================================

bug.cc: In function 'bool foo()':
bug.cc:3:29: internal compiler error: Segmentation fault
   return ({ return true; }) && false;
                             ^~
0xd721af crash_signal
        ../../gcc-7.1.0/gcc/toplev.c:337
0x847125 cxx_eval_constant_expression
        ../../gcc-7.1.0/gcc/cp/constexpr.c:4103
0x84d67e cxx_eval_outermost_constant_expr
        ../../gcc-7.1.0/gcc/cp/constexpr.c:4640
0x850976 maybe_constant_value(tree_node*, tree_node*)
        ../../gcc-7.1.0/gcc/cp/constexpr.c:4855
0x82b54a cp_fully_fold(tree_node*)
        ../../gcc-7.1.0/gcc/cp/cp-gimplify.c:1976
0x72eb47 cp_parser_binary_expression
        ../../gcc-7.1.0/gcc/cp/parser.c:8937
0x72efb4 cp_parser_assignment_expression
        ../../gcc-7.1.0/gcc/cp/parser.c:9169
0x732df8 cp_parser_expression
        ../../gcc-7.1.0/gcc/cp/parser.c:9338
0x72116d cp_parser_jump_statement
        ../../gcc-7.1.0/gcc/cp/parser.c:12151
0x72116d cp_parser_statement
        ../../gcc-7.1.0/gcc/cp/parser.c:10585
0x721a0d cp_parser_statement_seq_opt
        ../../gcc-7.1.0/gcc/cp/parser.c:11031
0x721adf cp_parser_compound_statement
        ../../gcc-7.1.0/gcc/cp/parser.c:10985
0x722248 cp_parser_function_body
        ../../gcc-7.1.0/gcc/cp/parser.c:21432
0x722248 cp_parser_ctor_initializer_opt_and_function_body
        ../../gcc-7.1.0/gcc/cp/parser.c:21470
0x722511 cp_parser_function_definition_after_declarator
        ../../gcc-7.1.0/gcc/cp/parser.c:26261
0x7231fd cp_parser_function_definition_from_specifiers_and_declarator
        ../../gcc-7.1.0/gcc/cp/parser.c:26173
0x7231fd cp_parser_init_declarator
        ../../gcc-7.1.0/gcc/cp/parser.c:19159
0x74718c cp_parser_simple_declaration
        ../../gcc-7.1.0/gcc/cp/parser.c:12777
0x747f25 cp_parser_block_declaration
        ../../gcc-7.1.0/gcc/cp/parser.c:12602
0x74d3d4 cp_parser_declaration
        ../../gcc-7.1.0/gcc/cp/parser.c:12500
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