[Bug c++/84967] New: internal compiler error: in process_init_constructor_array, at cp/typeck2.c:1324

["vegard.nossum at oracle dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84967

            Bug ID: 84967
           Summary: internal compiler error: in
                    process_init_constructor_array, at cp/typeck2.c:1324
           Product: gcc
           Version: 8.0.1
            Status: UNCONFIRMED
          Keywords: ice-on-invalid-code
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: vegard.nossum at oracle dot com
                CC: webrown.cpp at gmail dot com
  Target Milestone: ---

Input:

int b([] {
  struct c {
    double (*d)();
    c() {
      decltype(alignof(d)) a[] { sizeof d[0] }
    }
  };
})

Output:

$ cc1plus 
 <lambda()> <lambda()>::c::c()
<stdin>:5:44: warning: pointer to a function used in arithmetic
[-Wpointer-arith]
<stdin>:5:44: warning: invalid application of 'sizeof' to a function type
[-Wpointer-arith]
<stdin>:5:46: internal compiler error: in process_init_constructor_array, at
cp/typeck2.c:1324
0x1425b4f process_init_constructor_array
        /home/vegard/git/gcc/gcc/cp/typeck2.c:1323
0x141db7c process_init_constructor
        /home/vegard/git/gcc/gcc/cp/typeck2.c:1711
0x141db7c digest_init_r
        /home/vegard/git/gcc/gcc/cp/typeck2.c:1148
0x142ad1a digest_init_flags(tree_node*, tree_node*, int, int)
        /home/vegard/git/gcc/gcc/cp/typeck2.c:1193
0x142ad1a store_init_value(tree_node*, tree_node*, vec<tree_node*, va_gc,
vl_embed>**, int)
        /home/vegard/git/gcc/gcc/cp/typeck2.c:814
0xb45618 check_initializer
        /home/vegard/git/gcc/gcc/cp/decl.c:6424
0xbd954e cp_finish_decl(tree_node*, tree_node*, bool, tree_node*, int)
        /home/vegard/git/gcc/gcc/cp/decl.c:7078
0xfa0a29 cp_parser_init_declarator
        /home/vegard/git/gcc/gcc/cp/parser.c:19731
0xfa57a7 cp_parser_simple_declaration
        /home/vegard/git/gcc/gcc/cp/parser.c:13065
0xfab998 cp_parser_block_declaration
        /home/vegard/git/gcc/gcc/cp/parser.c:12883
0xfade64 cp_parser_declaration_statement
        /home/vegard/git/gcc/gcc/cp/parser.c:12476
0xefab2b cp_parser_statement
        /home/vegard/git/gcc/gcc/cp/parser.c:10925
0xefe5eb cp_parser_statement_seq_opt
        /home/vegard/git/gcc/gcc/cp/parser.c:11274
0xeff08a cp_parser_compound_statement
        /home/vegard/git/gcc/gcc/cp/parser.c:11228
0xf9283b cp_parser_function_body
        /home/vegard/git/gcc/gcc/cp/parser.c:21778
0xf9283b cp_parser_ctor_initializer_opt_and_function_body
        /home/vegard/git/gcc/gcc/cp/parser.c:21813
0xf9ba45 cp_parser_function_definition_after_declarator
        /home/vegard/git/gcc/gcc/cp/parser.c:26818
0xf9dd0c cp_parser_late_parsing_for_member
        /home/vegard/git/gcc/gcc/cp/parser.c:27699
0xf17c75 cp_parser_class_specifier_1
        /home/vegard/git/gcc/gcc/cp/parser.c:22742
0xf231cb cp_parser_class_specifier
        /home/vegard/git/gcc/gcc/cp/parser.c:22768
Please submit a full bug report,
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Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.

Version:

GNU C++14 (GCC) version 8.0.1 20180306 (experimental) (x86_64-pc-linux-gnu)