https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89119

            Bug ID: 89119
           Summary: internal compiler error: in tsubst_copy with
                    RANGE_EXPR
           Product: gcc
           Version: 9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: mpolacek at gcc dot gnu.org
  Target Milestone: ---

struct S { int a[2]; };

template <typename T>
void
fn ()
{
  constexpr S s = S();
}

void
foo ()
{
  fn<int>();
}


$ ./cc1plus -quiet  ice1.C 
ice1.C: In instantiation of ‘void fn() [with T = int]’:
ice1.C:13:11:   required from here
ice1.C:7:15: internal compiler error: in tsubst_copy, at cp/pt.c:16024
    7 |   constexpr S s = S();
      |               ^
0xae38ee tsubst_copy
        /home/mpolacek/src/gcc/gcc/cp/pt.c:16024
0xaf7879 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
        /home/mpolacek/src/gcc/gcc/cp/pt.c:19433
0xaf6667 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
        /home/mpolacek/src/gcc/gcc/cp/pt.c:19212
0xaf6809 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
        /home/mpolacek/src/gcc/gcc/cp/pt.c:19236
0xaef556 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
        /home/mpolacek/src/gcc/gcc/cp/pt.c:17756
0xae0510 tsubst_init
        /home/mpolacek/src/gcc/gcc/cp/pt.c:15350
0xae9772 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
        /home/mpolacek/src/gcc/gcc/cp/pt.c:16997
0xaeacad tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
        /home/mpolacek/src/gcc/gcc/cp/pt.c:17163
0xb0d5e4 instantiate_decl(tree_node*, bool, bool)
        /home/mpolacek/src/gcc/gcc/cp/pt.c:24529
0xb0dfbf instantiate_pending_templates(int)
        /home/mpolacek/src/gcc/gcc/cp/pt.c:24645
0x9919a7 c_parse_final_cleanups()
        /home/mpolacek/src/gcc/gcc/cp/decl2.c:4792
0xc4a5ec c_common_parse_file()
        /home/mpolacek/src/gcc/gcc/c-family/c-opts.c:1177
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.

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