[Bug c++/103936] New: [12 Regression] ICE with cs[5]{}

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103936

            Bug ID: 103936
           Summary: [12 Regression] ICE with cs[5]{}
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: blocker
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: pinskia at gcc dot gnu.org
  Target Milestone: ---

After  r12-6326, we get an ICE for
struct ss {
    ss() {};
};
struct C {
      ss s[1000];
};
int main() {
      C cs[5]{};
}
---- CUT ----
t.cc: In function ‘int main()’:
t.cc:9:15: internal compiler error: in gimplify_expr, at gimplify.c:15747
    9 |       C cs[5]{};
      |               ^
0x83bc3c gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        /home/apinski/src/upstream-gcc/gcc/gcc/gimplify.c:15747
0xf1be86 gimplify_stmt(tree_node**, gimple**)
        /home/apinski/src/upstream-gcc/gcc/gcc/gimplify.c:7026
0xf1eb30 gimplify_and_add(tree_node*, gimple**)
        /home/apinski/src/upstream-gcc/gcc/gcc/gimplify.c:495
0xf1eb30 gimplify_init_ctor_eval
        /home/apinski/src/upstream-gcc/gcc/gcc/gimplify.c:4857
0xf1f4c3 gimplify_init_constructor
        /home/apinski/src/upstream-gcc/gcc/gcc/gimplify.c:5255
0xf2bd17 gimplify_modify_expr
        /home/apinski/src/upstream-gcc/gcc/gcc/gimplify.c:5914
0xf19368 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        /home/apinski/src/upstream-gcc/gcc/gcc/gimplify.c:14951
0xf2a137 gimplify_stmt(tree_node**, gimple**)
        /home/apinski/src/upstream-gcc/gcc/gcc/gimplify.c:7026
0xf2a137 gimplify_compound_expr
        /home/apinski/src/upstream-gcc/gcc/gcc/gimplify.c:6218
0xf199aa gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        /home/apinski/src/upstream-gcc/gcc/gcc/gimplify.c:14941
0xf3d828 gimplify_stmt(tree_node**, gimple**)
        /home/apinski/src/upstream-gcc/gcc/gcc/gimplify.c:7026
0xf3d828 gimplify_cleanup_point_expr
        /home/apinski/src/upstream-gcc/gcc/gcc/gimplify.c:6766
0xf1993b gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        /home/apinski/src/upstream-gcc/gcc/gcc/gimplify.c:15344
0xf1be86 gimplify_stmt(tree_node**, gimple**)
        /home/apinski/src/upstream-gcc/gcc/gcc/gimplify.c:7026
0xf1a5db gimplify_statement_list
        /home/apinski/src/upstream-gcc/gcc/gcc/gimplify.c:2014
0xf1a5db gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        /home/apinski/src/upstream-gcc/gcc/gcc/gimplify.c:15396
0xf1be86 gimplify_stmt(tree_node**, gimple**)
        /home/apinski/src/upstream-gcc/gcc/gcc/gimplify.c:7026
0xf1a5db gimplify_statement_list
        /home/apinski/src/upstream-gcc/gcc/gcc/gimplify.c:2014
0xf1a5db gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        /home/apinski/src/upstream-gcc/gcc/gcc/gimplify.c:15396
0xf3d828 gimplify_stmt(tree_node**, gimple**)
        /home/apinski/src/upstream-gcc/gcc/gcc/gimplify.c:7026
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